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VLM-Reasoning

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VCR-Bench

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VLM-Reasoning 8

[ "1. At the beginning of the video, an electronic component moves from left to right, with a waveform diagram below it.", "2. Upon observation, it is noticed that after the component moves, the lower waves in the waveform all become higher.", "3. It can be seen that the circuit processes different frequency components of the signal, filtering out low frequencies to produce a new signal. Thus, it is a High-pass filter." ]

[ "1. In the first two seconds of the video, the suspended metal object is constantly swinging.", "2. From the third to the sixth second, a copper-like plate is placed beneath the metal, after which the metal stops swinging.", "3. As the magnet moves across an area on the copper plate, the change in magnetic flux induces eddy currents on the plate. These eddy currents flow in such a way as to repel the magnet as it approaches the plate and attract the magnet as it leaves the plate. Therefore, the video shows the basic idea of Lenz’s Law." ]

[ "1. From the sixth to the tenth second of the video, the person holds the first metal rod and moves it inside the coil. The light bulb shows no significant change in brightness, and the text displayed above reads \"Copper Rod.\"", "2. From the 20th to the 30th second, the second metal rod is moved inside the coil, with the text above showing \"Iron Rod.\" After the iron rod enters the coil, the light bulb goes out. When the rod is removed from the coil, the light bulb lights up again.", "3. From the 35th to the 44th second, the fourth rod made of nickel is demonstrated. When the nickel rod enters the coil, the light bulb dims.", "4. From the 50th second to the 60th second, an aluminum rod is displayed, and there is no significant change in the brightness of the light bulb.", "5. The inductance of an energized solenoid is directly proportional to the magnetic permeability of the inserted metal rod. The higher the magnetic permeability of the metal rod inserted, the greater the inductance, and the greater the resistance of the circuit the bulb is in, and the dimmer the bulb will be. Therefore, option C, which states that different metal rods have different magnetic permeabilities and that metal rods with high magnetic permeability make the bulb darker, is correct." ]

[ "1. The video first shows a diagram of a double helix DNA being unwound.", "2. From the third to the fifteenth second, it appears that the DNA is undergoing specific pairing with other substances.", "3. From the 18th to the 20th second, the video displays a strand of RNA, which seems to be the result of the previous DNA reaction.", "4. The video demonstrates the process of DNA unwinding and transcription into RNA under the action of enzymes, i.e., transcription. This process requires the activity of RNA polymerase, corresponding to option B." ]

[ "1. At the beginning of the video, bars of different heights are displayed.", "2. Starting from the third second, the bars begin to turn red one by one.", "3. From the 10th to the 18th second, before the fourth bar turns red, it is compared with the preceding bars and is finally positioned as the second one.", "4. From the 20th to the 35th second, the fifth bar repeats this process and is positioned as the first one.", "5. From the 40th to the 48th second, the last two bars also swap positions.", "6. After the entire process is completed, it can be seen that all the bars have been arranged in descending order of height.", "7. The video ultimately sorts these blocks in ascending order, thus it is clearly a sorting algorithm. Observing the video process, there is no need to scan the sorting process from beginning to end, and there is an obvious insertion action, which allows us to eliminate Selection Sort, indicating it is Insertion Sort." ]

[ "1. The video shows a simulation of planetary motion, with the surrounding planets orbiting the central star in circular paths.", "2. Kepler's Laws of Planetary Motion were proposed by Johannes Kepler in the early 17th century, describing the laws of planetary motion around the sun." ]

[ "1. From the beginning of the video to the sixth second, the person places both hands on the left and right sides of the instrument, respectively. The indicator needle is deflected to the right. After removing the hands, the needle deflects to the left.", "2. From the 15th to the 45th second, the experimenter places a sheet of white paper on the instrument and then pours water over it, but the instrument's indicator shows no change.", "3. From the 48th second to one minute, salt is added, and subsequently, the indicator needle begins to slowly move to the right.", "4. The demonstrator adds salt to the wet fabric between metal plates, as indicated by the Chinese character for 'salt'. This salt dissolves in water, dissociating into ions, which increases the conductivity of the solution, resulting in a significant increase in electrical current." ]

[ "1. The clip in the video is an excerpt from Truman's World and is presented primarily in the third person.", "2. Un punto de vista omnisciente limitado es aquel en el que el narrador conoce los pensamientos internos de algunos personajes específicos, pero no de todos ellos. Un narrador omnisciente, por otro lado, es un narrador que es capaz de conocer los pensamientos internos y los detalles de fondo de todos los personajes.", "3. Everything expressed in the film is from the point of view of the spectator, and there is no description of the inner world of the characters, so the correct answer should be third person." ]

[ "1. After the video starts, the camera jumps multiple times, and the scenes keep changing.", "2. The narrative style of the video closely aligns with Postmodernism, characterized by disjointed scenes, abrupt transitions, mixed media, and themes of reality versus illusion. It features fragmentation, metafictional elements, a non-linear structure, and paradoxes, which differentiate it from other literary movements like Romanticism, Realism, Modernism, and Naturalism." ]

[ "1. In the video, a pair of tweezers holds an LED and moves it from left to right. Text at the bottom indicates that the LED is near a magnetic field, and during the movement, the LED keeps flashing.", "2. The light bulb cuts through the magnetic field lines in the surrounding magnetic field, generating an induced electromotive force that produces a current in the circuit, causing the bulb to light up. Additionally, in areas with stronger magnetic field intensity, the bulb shines brighter." ]

[ "1. From 0:00 to 0:10, the doctor first observes the patient's tracheal position and chest contour, which are part of the Inspection step.", "2. From 0:18 to 0:23 and from 0:59 to 1:05 the doctor uses their hands to check the tracheal position and apex beat, which falls under Palpation. Therefore, the video does not include the steps of Percussion or Auscultation." ]

[ "1. From the beginning of the video to the 7th second, the mobile phone is placed directly on the experimental table. This is the first experiment.", "2. From 0:08 to 0:19, the experimenter placed the mobile phone inside the barbed wire fence. Conductive metals can reflect, absorb, and offset electromagnetic waves. This plays the role of reducing electromagnetic wave radiation, thereby reducing the intensity of electromagnetic waves received by the measuring device." ]

[ "1. From 0:00 to 0:22, a test tube contains a liquid, with a metal wire placed inside it, and a white solid appears to form on the surface.", "2. From 0:23 to 0:35, the metal wire disappears, and a large amount of white precipitate forms at the bottom of the test tube, while the liquid turns light blue.", "3. Based on the observed changes, it is more likely that a single replacement reaction occurred, displacing a white solid and forming a blue salt solution. Electrolysis reactions typically involve the decomposition of a liquid due to the passage of an electric current, which is unrelated to the chemical changes observed in the video. Although redox reactions seem plausible, they are not the primary reaction mechanism in this case. Therefore, the answer is a single replacement reaction." ]

[ "1. From 0:00 to 0:18, the first set of experiments in the video shows a plastic rod that has been rubbed being brought near an instrument. The metal foil inside the instrument separates, indicating that the plastic rod is charged.", "2. From 0:20 to 1:03, the second set of experiments in the video shows that when the instrument is brought near a suspended wooden rod, there is no significant phenomenon. However, a glass rod that has been rubbed can cause the suspended wooden rod to move, which also indicates that the glass rod has become charged after rubbing.", "3. There are two experiments in the video. Both of them are using electroscopes to detect the presence of electric charge on objects." ]

[ "1. From 0:00 to 0:18, the glass rod, after being rubbed, is brought into contact with the instrument, causing the metal foil inside the instrument to separate. This indicates that the glass rod becomes charged after rubbing.", "2. The wooden stick and the plastic rod have the same electric charge and repel each other.", "3. From 0:36 to 1:03, the wooden rod, after being rubbed, is able to cause another wooden rod to move.", "4. The charged plastic rod creates an electric field that induces polarization in the wooden stick molecules, even though the stick itself is uncharged. This polarization causes the wooden stick to experience rotational torque due to uneven forces in the electric field, leading to its rotation." ]

[ "1. From the beginning of the video to 0:04, the experimenter rubs a plastic water pipe with a piece of cloth.", "2. From 0:04 to 0:12, the plastic water pipe is brought near an aluminum foil cup on the table, and the aluminum foil cup is attracted to the metal rod.", "3. After the cloth is rubbed against the plastic pipe, charge transfer occurs. The plastic pipe becomes charged due to static electricity, and as a result, it attracts the aluminum foil. This is known as the triboelectric or static electricity effect." ]

[ "1. From the beginning of the video to 0:04, the experimenter rubs a plastic water pipe with a piece of cloth.", "2. From 0:04 to 0:12, the plastic water pipe is brought near an aluminum foil cup on the table, and the aluminum foil cup is attracted to the metal rod.", "3. There will be a charge transfer after the cloth and the plastic water pipe are rubbed. The plastic water pipe is charged due to static electricity, so the plastic water pipe will attract the aluminum foil." ]

[ "1. At the 8th second of the video, the experimenter begins to add a white solid into the beaker, with the subtitle indicating that it is sodium hydroxide.", "2. Around the 55th second, hydrochloric acid is added to the beaker.", "3. The question asks for the formula mass of the gas produced. Formula mass is calculated by adding the average atomic masses, expressed in amu. The video shows the reaction between sodium bicarbonate and hydrochloric acid, producing carbon dioxide as the gas. The formula mass of carbon dioxide is 44, so the correct answer is E." ]

[ "1. At the beginning of the video, a person is shown lying on the grass, with bright sunlight around.", "2. From 0:02 to 0:29, another person approaches to check on the fallen individual and helps him to lie down in the shade under a tree to avoid the sunlight.", "3. From 0:30 to 0:37, the rescuer removes the clothing of the person being assisted to aid in cooling.", "4. Based on the observations, it can be inferred that the person who was assisted likely suffered from heatstroke. When the body temperature of someone with heatstroke exceeds 41 degrees Celsius, it can be life-threatening." ]

[ "1. At the third second of the video, the number 5 at the top turns red.", "2. At the fifth second of the video, the number 2 in the second row turns red, making it the second number to turn red.", "3. At the seventh second of the video, the 8 on the second line turned red, which is the third number to turn red.", "4. At the ninth second of the video, the number 1 in the third row turns red, making it the fourth number to turn red." ]

[ "1. At the beginning of the video, the circle containing the number 2 is gray, just like the other numbers; this is the first color.", "2. 0:04, the circle containing the number 2 turned red, which is the second color.", "3. At 0:06, the circle containing the number 2 turned light red, which is the third color. Subsequently, until the end of the video, the color did not change again, so there are a total of three colors." ]

[ "1. From 0:00 to 0:15, the video shows certain birds cleaning insects off the bodies of giraffes.", "2. From 0:17 to 0:25, it displays scenes of birds cleaning the bodies of hippos.", "3. From 0:26 to 0:29, it shows birds helping to clean the ears of deer.", "4. The birds gain food, while the mammals receive the benefit of parasite removal. This interaction, where both parties mutually benefit, is classified as mutualism." ]

[ "1. At the beginning of the video, no people appear in the frame.", "2. At 0:06 seconds, a staff member in yellow clothing appears in the shot.", "3. Subsequently, until the end of the video, no new people appeared, so there was a total of one person." ]

[ "1. From 0:00 to 0:13, the video shows the movement of the instrument, with the indicator needle moving back and forth.", "2. From 0:16 to 1:05, it displays the instrument after improvement. The improved instrument moves with the indicator needle only moving on the right side, indicating that the output is all positive values.", "3. From 1:14 to 1:30, a waveform representing the output is drawn below the instrument, showing a sine wave with only the upper half.", "4. The generator in the video outputs current as a collection of non-negative segments of a sine wave, rather than a complete sine curve. Therefore, it can be inferred that the generator demonstrated in the video is a DC generator." ]

[ "1. 0:12-0:16, the middle bulb lights up for the first time and then goes out.", "2. The second time the bulb lights up at 0:29, and it remains lit thereafter, so the time of the second lighting is 0:29." ]

[ "1. At 0:03 seconds, the right bulb is lit for the first time.", "2. At 0:10 seconds, the right bulb was extinguished because it lasted for about 7 seconds." ]

[ "1. From 0:00 to 0:09, the metal is stored in kerosene.", "2. From 0:10 to 0:32, the metal is placed on a dish and cut. It is observed that the metal has a shiny surface and is easy to cut.", "3. From 0:32 to 0:38, an electrical conductivity test is performed on the metal, and the small light bulb lights up, indicating that the metal is conductive.", "4. From 0:40 to 1:41, the metal is placed in water, where it floats on the surface, showing that its density is less than that of water. The metal also reacts with the water, gradually shrinking in size. After an indicator is added, the liquid turns red.", "5. The metal is likely sodium, as it is silvery and forms a shiny surface when scraped. It conducts electricity, reacts with water to produce hydrogen gas, and creates an alkaline solution, turning phenolphthalein pink. These characteristics align with the behavior of alkali metals, specifically sodium, in laboratory demonstrations." ]

[ "1. From 0:00 to 0:09, the metal is stored in kerosene, indicating that the solid is insoluble in oil and has a higher density than the oil.", "2. From 0:10 to 0:32, the video shows that the solid can be easily cut with a knife, revealing a silver-white color, likely indicating it is a silver-white soft metal, possibly an alkali metal. ", "3. From 0:32 to 0:38, an electrical conductivity test is performed on the metal, and the small light bulb lights up, indicating that the metal is conductive.", "4. There are no clues in the video to indicate the flammability of metals. Therefore, options A, B, C, E, and F are all demonstrated in the video. Option D, flammability, is not addressed in the video, so the answer is D." ]

[ "1. At 0:43, a small piece of cut metal was placed into the beaker, marking the first piece of metal placed into the beaker.", "2. 0:44-1:00, the metal floats on the water surface and keeps moving, reacting with the water and gradually becoming smaller.", "3. Around 1:11, the first piece of metal was no longer visible and had completely disappeared." ]

[ "1. From 0:00 to 0:03, the objects on the left and right are simultaneously released.", "2. From 0:03 to 0:06, the object on the left falls rapidly and quickly disappears from the video, while the object on the right falls slowly until it gradually disappears around 0:07. Therefore, the object on the left falls faster and will reach the bottom first." ]

[ "1. The video showcases two circuits, both utilizing resistors R1, R2, and R3.", "2. 0:00-0:13, the first circuit is located in the center of the video, while the second circuit is in the lower left corner. The first circuit employs a series configuration, resulting in a higher equivalent resistance, while the second circuit uses a parallel configuration, leading to a lower equivalent resistance.", "3. 0:13-0:23, the second circuit is located in the center of the video, while the first circuit is in the upper right corner. The second circuit uses a parallel configuration, leading to a lower equivalent resistance. Consequently, the second circuit has a higher main branch current." ]

[ "1. From 0:08 to 0:13, the experimenter moves the copper rod back and forth in the coil; this is the first metal rod.", "2. From 0:24 to 0:33, the experimenter moves the iron rod back and forth in the coil; this is the second metal rod.", "3. From 0:38 to 0:49, the experimenter moves the nickel rod back and forth in the coil, which is the third metal rod. Therefore, the corresponding time is approximately 0:38." ]

[ "1. From 0:08 to 0:13, the experimenter moves the copper rod back and forth within the coil. This is the first metal rod, and the bulb remains lit with no noticeable change in brightness.", "2. From 0:24 to 0:33, the experimenter moves the iron rod back and forth within the coil. When the iron rod enters the coil, the light bulb gradually dims until it goes out.", "3. Therefore, if the first metal rod is replaced with an iron rod, compared to the copper rod, the brightness of the bulb will dim until it goes out." ]

[ "1. 0:00-0:09, the video shows small circles forming a large circle. This is the first display, and then the video switches to other scenes.", "2. 0:14, the screen switches back to the small circle screen.", "3. From then until the end of the video (2:15), the scene does not change again, so there is no third occurrence of this scene." ]

[ "1. 0:06-0:11, an image of the map of India appears in the video, showing the number 30%.", "2. Subsequently, until the end of the video (1:39), the map of India does not appear again, so the moment of the second appearance of the map of India does not exist." ]

[ "1. 0:00-0:02, The video only shows a character's image, and it is in a zoomed-in state.", "2. At 0:03 seconds, an image of an esophageal examination appears in the center of the video, and the character image becomes smaller and is located in the lower left corner; this is the first time it is reduced.", "3. At 0:26 seconds, the esophagus examination footage disappears, and the character footage is enlarged again.", "4. At 0:38, the character image becomes smaller again and is located in the lower left corner; this is the second time it has been reduced." ]

[ "1. 0:12-0:40, the blue-tinted fingernails and toenails indicate cyanosis due to reduced blood flow from vasospasm, characteristic of Raynaud's phenomenon.", "2. This disorder is linked to episodic vasospasm in the extremities, causing color changes, including blue discoloration. It is also a common clinical manifestation of systemic lupus erythematosus (SLE)." ]

[ "1. From 0:17 to 0:20, the experimenter brings a glass rod close to the soda can, but there is no noticeable phenomenon.", "2. From 0:20 to 0:25, the experimenter rubs a glass rod with a piece of cloth. ", "3. From 0:26 to 0:32, the experimenter brings the rubbed glass rod close to a soda can, and the can is attracted. ", "4. When the plastic rod and the aluminum can are both uncharged, they do not attract each other. The plastic rod becomes charged after being rubbed with cloth, while the aluminum can remains uncharged. The charged plastic rod attracts the aluminum can." ]

[ "1. From 0:17 to 0:20, the experimenter brings a glass rod close to the soda can, but there is no noticeable phenomenon.", "2. From 0:20 to 0:25, the experimenter rubs a glass rod with a piece of cloth. ", "3. From 0:26 to 0:32, the experimenter brings the rubbed glass rod close to a soda can, and the can is attracted. ", "4. When the plastic rod and the aluminum can are both uncharged, they do not attract each other. The plastic rod becomes charged after being rubbed with cloth, while the aluminum can remains uncharged. The charged plastic rod attracts the aluminum can.", "5. The most effective way to maximize the attractive force between the straw and the can is by rubbing the straw more vigorously with tissue. This action increases electron transfer, resulting in a greater negative charge on the straw, which enhances the electrostatic attraction to the positively charged side of the aluminum can." ]

[ "1. 0:03-0:11, when lifted, the tool in the clear liquid is easily removed, while the tool in the red liquid pulls the liquid up into a thick, elastic filament that stretches significantly before separating from the liquid.", "2. Hydrogels exhibit both viscous and elastic behavior, with rheological properties, particularly viscoelasticity, being the most critical parameter for understanding the degree of crosslinking, molecular weight, glass transition, and structure. Hydrogels are predominantly non-Newtonian liquids with shear-thinning behavior, where viscosity decreases as shear rate increases. Extensional thickening is the key rheological property of hydrogels, which corresponds to option D in the new selection." ]

[ "1. 0:02-0:07, the experimenter at the instrument table slowly opens it, followed by a series of operations.", "2. 0:20-0:23, the instrument table is slowly closed by the experimenter.", "3. 1:05-1:09, the instrument platform is slowly opened again and remains open until the end of the video (1:10).", "4. Therefore, the first time the instrument platform was opened lasted about 16 seconds, and the second time lasted about 1 second, totaling approximately 17 seconds." ]

[ "1. From 0:00 to 0:45, a small amount of sand and soil can be seen falling in the video.", "2. From 0:46 to 0:57, the sand and soil begin to collapse on a large scale, creating a significant amount of dust.", "3. Option C, securing the cliff face with rock bolts and wire mesh, is identified as the most appropriate intervention. This method specifically addresses the instability of the steep rocky cliff, making it effective for stabilizing loose rocks, especially given the limited space and challenging terrain of the road carved into the cliff side." ]

[ "1. From 0:00 to 0:45, a small amount of sand and soil can be seen falling in the video.", "2. From 0:46 to 0:57, the sand and soil begin to collapse on a large scale, creating a significant amount of dust.", "3. Aggregate soils are formed when soil is moved from its original position by gravity, such as during a landslide. The soil collapse in the video was caused by a landslide and should therefore be attributed to gravity." ]

[ "1. From 0:00 to 0:45, a small amount of sand and soil can be seen falling in the video.", "2. From 0:46 to 0:57, the sand and soil begin to collapse on a large scale, creating a significant amount of dust.", "3. The primary geological process likely causing rockslides on the steep, rocky, and sparsely vegetated cliff is freeze-thaw weathering. To confirm this and design effective remedial measures, a geological site investigation is recommended. This should include rock mass characterization and discontinuity surveys to identify and assess areas most affected by freeze-thaw cycles." ]

[ "1. 0:00-0:12，the video shows liver changes from reddish-brown to pale brown with yellow dots. ", "2. 0:13-0:19, the video shows risk factors include a high-fat diet, alcohol consumption, and diabetes.", "3. These contribute to a chronic liver disease with regenerating nodules and fibrous septa. The condition is identified as cirrhosis, characterized by loss of normal lobular liver architecture." ]

[ "1. 0:00-0:12，the video shows liver changes from reddish-brown to pale brown with yellow dots. ", "2. 0:13-0:19, the video shows risk factors include a high-fat diet, alcohol consumption, and diabetes.", "3. This process corresponds to liver cirrhosis. While distractors such as viral hepatitis D and alcoholic liver disease can also cause cirrhosis, the video does not provide specific evidence of these underlying causes. Therefore, liver cirrhosis is the most reasonable answer." ]

[ "1. 0:01-0:05, the video shows disturbed samples being collected using the shell of a boring rig.", "2. From 0:06 to 0:12, the collected sample is placed into a container, indicating a sampling process. Other options are not demonstrated in the video." ]

[ "1. 0:33-0:54, where gold nanoparticles (yellow spheres with blue arrows pointing inward) attach to a larger structure (purple shape), causing it to change color (turning darker purple), and considering the properties of gold nanoparticles—biocompatibility, non-toxicity to cells, and not eliciting an immune response, the analysis concludes that the video illustrates gold nanoparticles used in colorimetric biosensors for detecting specific biomolecules.", "2. This is based on the observed color change due to surface plasmon resonance, which aligns with the optical properties of the nanoparticles, rather than applications like photothermal therapy or drug delivery that don't involve visible color changes." ]

[ "1. 0:26-1:56, the person creates a simple capacitor by layering aluminum foil (conductor) and paper (insulator), then rolling them together. This assembly forms two conductive plates separated by an insulating layer, characteristic of a capacitor.", "2. 1:58-2:30, testing the device with a multimeter likely measures capacitance, confirming it functions as a capacitor, a device storing energy in an electric field." ]

[ "1. From 0:00 to 0:21, the video shows a group of people placing chemicals or other substances on the road.", "2. From 0:35 to 0:45, a military vehicle is shown driving over the area where the chemicals were placed.", "3. Starting from 0:45, the video shows the vehicle being damaged by the chemicals.", "4. Since the video demonstrates the destruction of the vehicle using chemicals, it likely concludes with a depiction of a chemical or biological attack." ]

[ "1. From 0:03 to 0:55, the video shows the bridge swaying back and forth in the wind, appearing very unstable.", "2. Subsequently, from 0:56 to 1:08, it shows the collapse of the bridge, which continues to sway during the process.", "3. Based on the above observations, the instability of the bridge is caused by strong winds, and the main reason for the collapse is likely the wind." ]

[ "1. At the beginning of the video, there is a worker in the shot.", "2. The camera gradually moves to the left, and around the 12th second, the second worker appears on the left side of the frame.", "3. From the 27th second to the 32nd second, as the camera moves, the second worker gradually disappears from the frame until completely out of sight by the 33rd second.", "4. In summary, the second worker appeared at 12 seconds and disappeared at 32 seconds, appearing for a total of approximately 20 seconds." ]

[ "1. 0:17-1:00, a red balloon is lowered towards a mound of gelatin powder on a plate.", "2. As the balloon approaches, thin strands of the powder reach up toward it, becoming thicker as the balloon gets closer. The behavior of gelatin powder reaching toward the balloon is best explained by electrostatic forces. The balloon likely carries a static electric charge, inducing polarization and attraction among the neutral gelatin particles.", "3. This principle is akin to electrospinning, where electrostatic forces draw fibers from a polymer solution, a process utilized in fabricating nanofibrous scaffolds in biomedical engineering." ]

[ "1. 0:44-0:54, a graduated cylinder appeared in the shot.", "2. 1:02-1:11, the experimenter uses a rubber-tipped dropper to drop liquid onto the pH tester for testing.", "3. 1:14-1:40, a beaker is shown in the shot.", "4. Therefore, two heads, a pipette, and a beaker appeared in the video, but an alcohol lamp did not appear." ]

[ "1. Around 0:30 seconds, after the little boy falls off his bike, he picks it up with his mother's help. Then, a cutscene of three bicycles moving appears, followed by a transition to the boy continuing to ride with his mother's assistance.", "2. Around 1:26, the little boy is already able to ride the bike skillfully and has gained the approval of his friends. Subsequently, the cutscene appears for the second time, transitioning to the little boy riding with his friends. Therefore, the cutscene appears a total of two times." ]

[ "1. From 0:00 to 0:23, the little boy was learning to ride a bicycle, but he rode unsteadily and fell off. He sat on the ground, feeling very frustrated.", "2. From 0:24 to 0:30, the boy's mother helped him get the bicycle back up and encouraged him.", "3. From 0:31 to 1:00, the little boy continued to practice riding the bicycle with his mother's help.", "4. From 1:00 to 1:27, the little boy was able to ride the bicycle well without his mother's help and received praise from his family and friends.", "5. The narrative highlights the theme of persistence in the face of adversity leading to personal growth. The boy's determination to learn to ride his bike, despite failures, and his mother's supportive role contribute to his confidence and success, emphasizing perseverance as a key to overcoming challenges." ]

[ "1. At the beginning of the video, there is a cartoon character on the left and a string of numbers on the right, arranged from top to bottom as 5, 1, 4, 8, 0, 6.", "2. From 0:09 to 0:10, the character starts from the bottom and first compares the sizes of 0 and 6. Then it swaps the positions of 6 and 0, moving 6 above 0.", "3. From 0:11 to 0:13, it compares the sizes of 6 and 8. Since 6 is smaller than 8, the two numbers remain unchanged.", "4. From 0:13 to 0:26, the character continues to compare the sizes of adjacent numbers from bottom to top and moves the larger number above. From this, we can infer that the character is performing bubble sort on the sequence of numbers.", "5. To sort the sequence [5, 1, 4, 8, 0, 6] using bubble sort, a total of 8 swap operations are needed. In the first iteration, 4 swaps occur; in the second iteration, 3 swaps; in the third (last) iteration, 1 swap. Thus, the ordering of the given sequence is finished through 8 swaps." ]

[ "1. When the power supply is activated, sparks appear where two thin metal contacts touch a suspended metal sphere.", "2. 0:53-1:21, a metal rod is brought close to the sphere without touching it, and electrical discharges (arcs) occur between the rod.", "3. Option E explains that the metal rod's proximity generates a strong electric field, causing air ionization and discharges. The sharp rod tip enhances corona discharge, allowing charge transfer without contact." ]

[ "1. At the beginning of the video, there is a small bottle, a pair of scissors, and a complex compound in the frame.", "2. From 0:02 to 0:08, the scissors cut through the middle of the compound, dividing it into two compounds, which appears to be a process of decomposition.", "3. From 0:10 to 0:13, a beaker appears below the compounds, and a water molecule jumps out of the beaker. After being disassembled, the water molecule is then assembled into the two compounds, which seems to be a process of hydrolysis." ]

[ "1. 0:23-0:33, the experimenter placed the assembled foil cup on the electroscope to test if it was charged; this was the first use of the electroscope.", "2. 0:40-0:46, the experimenter directly placed the plastic rod on the electroscope to test whether it was charged. This was the second use of the electroscope.", "3. 2:32-2:50, the experimenter placed the rubbed plastic rod on the electroscope to test whether it was charged. This was the third use of the electroscope. Therefore, the third use corresponds to the occurrence time of approximately 2:32." ]

[ "1. From 0:00 to 0:03, the doctor's stethoscope is placed in the second intercostal space at the left margin of the sternum.", "2. From 0:04 to 0:09, the doctor's stethoscope was placed in the third intercostal space at the left margin of the sternum.", "3. From 0:10 to 0:13, the doctor's stethoscope was placed in the fourth intercostal space at the left margin of the sternum.", "4. From 0:14 to 0:19, the doctor's stethoscope was placed in the fifth intercostal space and slightly medial to the midclavicular line of the fifth intercostal space.", "5. The middle auscultation zone does not include the aortic zone because the aortic zone is located in the second intercostal space at the right edge of the sternum rather than the left edge." ]

[ "1. From 0 to 9 seconds, the number 6 is below the number 0, and then the larger number 6 swaps with the smaller number 0.", "2. Entre 9 y 13 segundos, el número 6 está por debajo del número 8. No hay intercambio de lugares entre los dos.", "3. For 14 to 17 seconds, the number 8 is below the number 4, and then the larger number 8 swaps with the smaller number 4.", "4. For 18 to 21 seconds, the number 8 is below the number 1, and then the larger number 8 swaps with the smaller number 1.", "5. For 21 to 27 seconds, the number 8 is below the number 5, and then the larger number 8 swaps with the smaller number 5.", "6. Entre los 34 y 39 segundos, el número 0 está debajo del número 6. No hay intercambio de lugares entre los dos.", "7. For 40 to 41 seconds, the number 6 is below the number 4, and then the larger number 6 swaps with the smaller number 4.", "8. The observation results in a rule that position swapping occurs only when the larger number is located below the smaller number, and the largest element is moved step by step to its correct position by comparing and exchanging adjacent elements, meeting the characteristics of the bubble sorting algorithm. So the video shows the Bubble Sort algorithm." ]

[ "1. The video shows a circuit structure consisting of resistors (R), inductors (L), and capacitors (C) in series from 0 to 14 seconds.", "2. Because the resistance (R), inductor (L), capacitor (C), and power supply peak V0 are fixed parameter values, only the power supply frequency can be adjusted.", "3. In the RLC series circuit, when the inductive reactance equals the capacitive reactance, the circuit achieves the maximum current flow rate, which is called the resonant frequency \\(\\omega = \\frac{1}{\\sqrt{LC}}\\)" ]

[ "1. The video begins with an actively moving irregular cell, whose internal structures are clearly visible.", "2. From 0:00 to 0:33, the cell's range of activity becomes increasingly limited, and its shape becomes more regular, approaching a circular form by around 0:30. Meanwhile, the internal structures gradually become disordered and unclear, making them indistinguishable, and the cell's vitality diminishes.", "3. The morphological changes in the cell death process observed in the video indicate that this is the process of apoptosis (option D Apoptosis), specifically including cell volume shrinkage, nuclear division into nucleosome size, and intact plasma membrane." ]

[ "1. The video begins with an actively moving irregular cell, whose internal structures are clearly visible.", "2. From 0:00 to 0:33, the cell's range of activity becomes increasingly limited, and its shape becomes more regular, approaching a circular form by around 0:30. Meanwhile, the internal structures gradually become disordered and unclear, making them indistinguishable, and the cell's vitality diminishes.", "3. The video depicts apoptosis through traits like cell shrinkage and DNA fragmentation. These are indicative of the intrinsic apoptosis pathway. Given the absence of external triggers, the release of cytochrome c from mitochondria, leading to intrinsic apoptosis, is the most likely molecular event initiating the process, aligning with the observed cellular changes. Therefore, the correct option is B." ]

[ "1. From 0:00 to 0:31, the video shows the process of cell proliferation, with the number of cells in the frame continuously increasing and the image becoming more and more dense.", "2. From 0:32 to 1:10, the camera focuses on several round cells. It can be seen that two cells in the center of the frame gradually give rise to a new cell, which continues to grow in size.", "3. From 1:11 to 1:49, the video again shows the process of cell proliferation.", "4. From 1:50 to 2:10, the video once again displays the process of a large number of cells proliferating, similar to the first set of images.", "5. The cells observed in the video are budding and increasing in number. This asexual reproduction method and the round shape of the shown cells align with the features of Fungi cell type. The observed cells are possibly yeast cells." ]

[ "1. From 0:00 to 0:31, the video shows the process of cell proliferation, with the number of cells in the frame continuously increasing and the image becoming more and more dense.", "2. From 0:32 to 1:10, the camera focuses on several round cells. It can be seen that two cells in the center of the frame gradually give rise to a new cell, which continues to grow in size.", "3. From 1:11 to 1:49, the video again shows the process of cell proliferation.", "4. From 1:50 to 2:10, the video once again displays the process of a large number of cells proliferating, similar to the first set of images.", "5. Microorganisms reproduce mainly through Fission and budding. Cell division and growth leads to an increase in cell mass and nucleic acid content. The result of this growth leads to a surge in cellular elements and ultimately to an increase in the number of cells. The bacteria in the video use Fission and budding to reproduce." ]

[ "1. At 0:15-0:16, two apples from the first group fall, landing in the left and right boxes respectively.", "2. 0:16-0:17, two apples from the second group fall.", "3. 0:17-0:18, two apples from the third group fall.", "4. 0:18-0:19, two apples from the fourth group fall." ]

[ "1. From 0:00 to 0:01, the person in the video is holding a glass of milk, seemingly in the act of drinking it", "2. From 0:02 to 0:06, the person's face in the video is covered with numerous pimples, which appears to be an allergic reaction.", "3. The man's allergic reaction, characterized by urticaria after drinking milk, is mediated by immunoglobulin E (IgE). This response is typical of acute hypersensitivity reactions, where IgE plays a key role in allergies, including food-induced urticaria. " ]

[ "1. From 0:00 to 0:01, the person in the video is holding a glass of milk, seemingly in the act of drinking it.", "2. From 0:02 to 0:06, the person's face in the video is covered with numerous pimples, which appears to be an allergic reaction.", "3. As shown in the video, the man experiences an allergy to certain foods, and food allergy can lead to symptoms such as rhinitis and asthma. Therefore, the correct option is B." ]

[ "1. From 0:03 to 0:07, the video shows the process of cells proliferating indefinitely, and at 0:08 it points out that cancer cells have similar characteristics.", "2. From 0:09 to 0:13, the video animation depicts the process of cancer cells proliferating continuously in the pancreas.", "3. According to the order of gene mutations in the progression model of pancreatic cancer (early, middle, late), the correct answer is option E. K-RAS, p16, p53." ]

[ "1. At the beginning of the video, node d is yellow.", "2. 0:07-0:08, node d changed from yellow to gray, this was the first color change.", "3. 1:01-1:02, node d changed from gray to yellow, which is the second color change.", "4. 1:37-1:38, node d changed from yellow to gray, which was the third color change." ]

[ "1. From 0:00 to 0:06, the video illustrates a little person tossing and turning in bed, unable to fall asleep.", "2. From 0:07 to 0:14, it shows the little person beginning to worry about various things, such as not having done the laundry, or being scolded by the boss, and so on.", "3. The video depicts a person unable to sleep due to excessive worrying, as shown by distress and thought bubbles of various stressors. This aligns with initial insomnia often caused by anxiety disorders, suggesting that the most likely underlying condition in this scenario is anxiety." ]

[ "1. 0:00-0:03, because the circuit was not connected, the value on the meter remained at 0.", "2. 0:04-0:08, the experimenter connected the circuit, and the meter reading increased to 32.", "3. 0:08-0:17, the circuit is disconnected again, and the meter reading returns to around 0.", "4. 0:18-0:22, the experimenter toggled the switch, changed the circuit structure, reconnected the circuit, and the meter reading rapidly increased, reaching a maximum of 3140.", "5. 0:31-0:34, the experimenter reconnected the circuit, and the meter reading reached a maximum of around 3122.", "6. Therefore, the highest reading on the electric meter, 3140, appears approximately between 0:18 and 0:22." ]

[ "1. 0:36-0:48, the video shows a female nurse helping a man measure his blood pressure, this is the first time it is shown.", "2. 0:49-1:00, the shot shows a person measuring their own blood pressure, this is the second time it is shown.", "3. 1:01-1:07, an elderly doctor is helping a woman measure her blood pressure, this is the third demonstration.", "4. 1:59-2:12, the footage shows a doctor measuring a patient's blood pressure, which is the fourth time this is shown. Therefore, it is shown a total of four times." ]

[ "1. Starting at 0:50, a small metal block was added to a beaker containing water. It can be observed that the metal reacted with the water, producing gas.", "2. From 1:19 to 1:29, the experimenter collected the gas produced and directed it towards a small candle. The candle burned intensely for a moment before going out. This suggests that the gas produced might be hydrogen. Therefore, the reaction between the metal and water likely produced hydrogen gas and an alkali.", "3. From 1:39 to 1:45, a certain liquid was added to the beaker, and the liquid inside turned red. Since a red color indicates the presence of an alkali, the reagent added is most likely phenolphthalein solution." ]

[ "1. At the beginning of the video, the hair on the device hangs down naturally.", "2. At 0:13, the experimenter turned on the device, and the hair on the instrument suddenly began to stand up in various directions.", "3. This phenomenon is caused by the accumulation of charges of the same polarity on the wig. The wig obtains electric charge from the spherical shell, and different hair strands with the same electric charge repel each other, resulting in the observed effect. Therefore, the option A is correct." ]

[ "1. From 0:00 to 0:20, the video shows the cutting and processing of pigskin.", "2. From 0:25 to 0:57, it displays the material that has been processed into a fibrous-like substance.", "3. Based on the raw material and the form of the processed material, it can be inferred that the material being processed is Gelatin." ]

[ "1. From 0:00 to 0:03, the camera gradually moves into a spherical object, which is likely to be the cell nucleus.", "2. From 0:04 to 0:15, the first processing step, namely transcription, takes place within the cell nucleus.", "3. From 0:16 to 0:19, the product of transcription is transported out of the cell nucleus, presumably into the cytoplasm.", "4. From 0:20 to 0:56, the second processing step, namely translation, occurs in the cytoplasm.", "5. The video depicts transcription occurring in the nucleus and translation in the cytoplasm. This separation of processes indicates that the cell is a eukaryotic cell, as eukaryotic cells have a nuclear membrane that distinguishes these locations. In contrast, prokaryotic cells perform both processes in the cytoplasm as they lack a nucleus." ]

[ "1. 0:00-0:03, the camera gradually moves into a spherical object, which is presumed to be a cell nucleus.", "2. 0:04-0:15, the first processing step, which is transcription, takes place inside the cell nucleus.", "3. 0:16-0:19, the product of transcription is sent out of the nucleus, presumably entering the cytoplasm.", "4. 0:20-0:56, the second process, which is translation, takes place in the cytoplasm.", "5. Therefore, the content in the video mainly occurs in the nucleus and the cytoplasm, with the events in the cytoplasm taking a longer time." ]

[ "1. 0:03-0:13, the video shows a signal tower with both inward and outward blue arrows, indicating that the tower is both transmitting (outward arrows) and receiving (inward arrows) electromagnetic waves.", "2. This characteristic aligns with the Reciprocity Theorem." ]

[ "1. 0:00-0:10, the experimenter placed the glass box on the equipment and then began the experiment.", "2. 0:40-0:50, as the two aluminum plates approach each other, an electric arc is generated within the instrument inside the glass box, presenting a certain risk factor.", "3. 0:55-1:23, as a metal tip approaches, an electric arc is also generated at the tip, which also presents certain safety factors.", "4. It can be concluded that since the experiment may produce an electric arc, which poses certain safety risks, the glass box covering it before the experiment can serve a protective function." ]

[ "1. At the beginning of the video, a tube can be seen connecting two sealed containers.", "2. At 0:05-0:10, the experimenter added NH₃ to the left container.", "3. 0:11-0:17, the experimenter added HCl to the container on the right, and subsequently, a large amount of white smoke was produced in this container.", "4. Since NH₃ easily volatilizes, it can enter the right container through the conduit and react with HCl to produce NH₄Cl, so the main component of the white smoke is NH₄Cl." ]

[ "1. From 0:00 to 0:07, in the animation, the character with buds is sleeping but still moving his mouth, and a yellow speech bubble appears. It can be inferred that this is meant to show that he is talking in his sleep.", "2. The character with a sprout on its head is depicted sleep-talking in the video, which is identified as parasomnia. Sleep-talking typically occurs during REM sleep." ]

[ "1. From 0:05 to 0:07, the animation shows a nail piercing the skin, with pathogens from the nail entering the cells.", "2. From 0:08 to 0:16, a certain type of cell moves to the location of the pathogen and engulfs the invading pathogen.", "3. Phagocytosis by cells is part of the body's second line of defense in the immune system." ]

[ "1. From 0:05 to 0:18, the video highlights the person's head, and the subtitle indicates that he has the symptoms of \"FLATTENED, BROAD FACE, NARROWED EYES.\"", "2. From 0:19 to 0:27, the text shows that the person has the symptoms of \"LEARNING DIFFICULTIES, SHORTER THAN AVERAGE LIFE EXPECTANCY.\"", "3. From 0:28 to 0:40, the video displays the person's heart and intestines, and the subtitle indicates that he has the symptoms of \"PROBLEMS WITH THE HEART AND BOWEL, DIFFICULTIES WITH HEARING AND VISION, HIGHER RISK OF INFECTIONS.\"", "4. The video shows the symptoms of Down syndrome. This question examines the causes of Down syndrome: Trisomy 21, the triplication of chromosome 21." ]

[ "1. At the beginning of the video, the number 3 is green. Around 0:08 seconds, the 3 turns red, which is the first color change of the number 3.", "2. At 0:12, the number 3 changed from red to white, marking the second color change for this number.", "3. 0:16, the number 3 changed from white to green, marking the third color change for this number.", "4. At 0:25, the number 3 changed from green to red, marking the fourth color change of this number." ]

[ "1. At the beginning of the video, the number 3 is on the left.", "2. At 0:03, the number 5 moved to the far left, then moved back to its original position at 0:05, while the number 3 remained on the far left.", "3. At 0:12, the number 3 moved to the right of the number 2, making the number 2 the leftmost number.", "4. At 0:19, the number 5 moved to the far left again, then moved back to its original position at 0:21, while the number 2 remained on the far left.", "5. At 0:27, the number 3 moved to the far left, then moved back to its original position at 0:29, while the number 2 remained on the far left.", "6. Therefore, in the first 30 seconds, the number 3 is on the far left for approximately 12 seconds, the number 2 is on the far left for approximately 13 seconds, and the number 5 is on the far left for approximately 4 seconds. Thus, the third most frequent number is 5." ]

[ "1. From 0:01 to 0:03, the video samples a small segment of a continuous square wave and places it within a coordinate axis.", "2. From 0:04 to 0:26, the square wave within the coordinate axis is resampled and marked with several points. ", "3. From 0:27 to 0:39, the resampled square wave is transmitted to a specialized instrument, where it is processed through the instrument's plotting function and transformed into an oscillating sine wave. ", "4. From 0:40 to 1:12, further adjustments are made to the instrument, ultimately resulting in the sine wave information.", "5. In the video clip, a square wave signal is sampled, with 20 sample points selected and plotted. The final connection forms a sinc signal, demonstrating a practical application of the Nyquist-Shannon sampling theorem." ]

[ "1. 0:11-0:13, the person in the video shows a small piece of paper to the camera, which seems to have some letters written on it, possibly pointing to something else.", "2. 0:20-0:21, a second small note is displayed, with similar content written on it, and there is a small arrow that seems to point to the next node.", "3. 1:12-1:14, showed the third small note." ]

[ "1. 0:11-0:13, the person in the video shows a small piece of paper to the camera, which seems to have some letters written on it \"next to agg,\" seemingly pointing to something else.", "2. 0:20-0:21, a second small note is shown, with the same letters as the first note, but with an additional small arrow that seems to point to the next node." ]

[ "1. From 0:00 to 0:16, the presenter illustrated through drawing how a special gene was edited into the DNA.", "2. From 0:20 to 0:33, the special gene appeared to be edited into a more complex structure.", "3. From 0:37 to 0:55, the mating and reproduction process of mosquitoes carrying a special gene is shown, with the spread of the special gene being very limited. ", "4. From 1:03 to 1:20, another method for editing the special gene is demonstrated. ", "5. From 1:21 to 1:45, the mating and reproduction process of mosquitoes carrying the special gene is shown again, this time with the special gene being widely spread.", "6. In video, CRISPR is used to edit mosquito genomes, making modified genes more prevalent over generations, spreading rapidly through the population. This preferential inheritance aligns with the concept of a gene drive." ]

[ "1. 0:00-0:10, The person in the video stacks a pile of white objects and records the slope.", "2. 0:11-0:32, The person then piles up a heap of black solid objects and records the slope.", "3. 0:33-0:47, The process of piling up a heap of persimmons is demonstrated, and the slope is recorded.", "4. 0:48-0:50, A mound made of some kind of sand is also shown.", "5. The video demonstrates how to evaluate the stability of slopes composed of different materials based on the angle at which a stable slope is formed." ]

[ "1. 0:00-0:09, it can be observed that the solid is stored in a liquid similar to oil, suggesting that it is likely insoluble in oil -> B is incorrect.", "2. 0:23-0:30, the video shows that the solid can be cut with a knife and the cut surface appears silver-white, indicating that it is likely an alkali soft metal, and is silver in color -> A, D is correct, and C is incorrect.", "3. 0:48-1:12, when the metal was placed in water, it reacted violently and gradually disappeared. Therefore, option E is incorrect." ]

[ "1. From 0:35 to 0:44, the experimenter touches the cut surface of the metal with a small electrical device.", "2. The setup shown in the video with a battery pack and prongs aligning with conductivity testing, particularly comparing the shiny interior and gray exterior" ]

[ "1. From 0:00 to 0:22 is the first experiment, in which two ordinary balls are placed into an aluminum tube and fall quickly.", "2. From 0:23 to 0:49 is the second experiment, in which the balls are replaced with balls that have strong magnetism and fall slowly inside the aluminum tube.", "3. The first time the two balls fall is a free fall motion. In the second experiment, the ball was replaced without changing the tube. The ball is magnetic. During the falling process, the aluminum tube generates eddy currents, and the ball experiences upward resistance, so the fall slows down." ]

[ "1. From 0:00 to 0:10, the “Y”-shaped cell appears to have parasitized the purple substance.", "2. From 0:11 to 0:26, the video shows that the purple substance, after being parasitized, seems to be located inside the human body.", "3. 0:27-0:35, the baby exhibits symptoms such as vomiting, indicating that the 'Y'-shaped cells are related to food allergies.", "4. Immunoglobulin E (IgE) is the primary factor responsible for immediate food allergy reactions." ]

[ "1. From 0:00 to 0:10, the “Y”-shaped cell appears to have parasitized the purple substance.", "2. From 0:11 to 0:26, the video shows that the purple substance, after being parasitized, seems to be located inside the human body.", "3. 0:27-0:35, the baby exhibits symptoms such as vomiting, indicating that the 'Y'-shaped cells are related to food allergies.", "4. The video shows the process of IgE activating mast cells, triggering an allergic reaction. Toward the end of the video, the child develops symptoms such as vomiting and diarrhea. Food allergy is the most likely cause of this process." ]

[ "1. From 0:00 to 0:10, the “Y”-shaped cell appears to have parasitized the purple substance.", "2. From 0:11 to 0:26, the video shows that the purple substance, after being parasitized, seems to be located inside the human body.", "3. 0:27-0:35, the baby exhibits symptoms such as vomiting, indicating that the 'Y'-shaped cells are related to food allergies.", "4. Immunoglobulin E (IgE) is the primary factor responsible for immediate food allergy reactions.", "5. The infant's symptoms suggest a Type I hypersensitivity reaction, mediated by IgE, triggered by allergens. IgE binds to mast cells, causing degranulation and allergic symptoms. Interleukin-4 (IL-4) is the key cytokine promoting B-cell class switching to IgE." ]

[ "1. At the beginning of the video, a cluster of blue particles is shown to be in constant motion.", "2. Around 0:25, some of the blue particles at the bottom can be seen gathering together.", "3. Around 1:29, most of the particles can be seen having gathered together.", "4. Particles clump together, showing self-assembly into a network known as a hydrogel. Initially dispersed, particles transition from individual monomers to form polymer-like fibrils via non-covalent interactions. These fibrils entangle, resembling the gelation process, ultimately creating a hydrogel" ]