input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: While most people consider that laughter is one of the nature's great treatments for a whole range of mental and physical diseases, it is still a serious scientific subject that researchers are trying to figure out. "Laughter is social." says Robert R. Provine, author of the book "Laughter: A Scientific Investigation", who has been studying laughter for decades. "Almost all people laugh 'ha-ha-ha' basically the same way. Whether you speak Mandarin, French or English, everyone will understand laughter. There is a pattern generator in our brain that produces this sound. Laughing is also a good way of communicating. Babies laugh long before they speak. No one teaches them how to laugh. They just do it. People may laugh at a prank on April Fools' day. But surprisingly, only 10 to 15 percent of laughter is the result of someone making a joke. Laughter is mostly about social responses rather than reaction to a joke. Deaf people laugh without hearing and people on cell phones laugh without seeing, which shows that laughter isn't dependent on a single sense but on social interactions. And laughter is not just a human thing. Chimps tickle each other and even laugh when another chimp pretends to tickle them. Jaak Panksepp studies rats that laugh when he tickles them. It turns out rats love to be tickled. They return again and again to the hands of researchers tickling them, Panksepp's video shows. By studying rats, scientists can figure out what's going on in the brain during laughter. It has been found that laughter in rats produces a chemical that acts as an antidepressant and anxiety-reducer. Scientists think the same thing probably happens in humans, too. This would give doctors a new chemical target in the brain in their effort to develop drugs that fight depression and anxiety in people. Even so, laughter itself has not been proved to be the best medicine, experts said. "No study has shown that laughter produces a direct health benefit," Provine said, "largely because it's hard to separate laughter from just... Options: A Laughter depends on many senses. B Laughter is a social response shared by all creatures. C If you speak different languages, you will laugh differently. D A new medicine has been developed based on the laughter research. Answer: B Laughter is a social response shared by all creatures. Question:
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output: Which of the following statements is true according to the passage?

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: Washington: NASA has announced evidence that Jupiter's largest moon, Ganymede, has a saltwater ocean under its icy surface. The ocean seems to have more water than all the water on Earth's surface, according to new Hubble observation. New Hubble observations of Ganymede's magnetic field strongly suggest that the moon, which is the largest in our whole solar system, is home to a subsurface ocean. Scientists estimate the ocean is 95 kilometres thick, which is about 10 times deeper than Earth's oceans. But unlike our salty waters, Ganymede's ocean is buried under 150 kilometres of ice. While scientists have speculated since 1970s about the presence of an ocean on Ganymede------the largest moon in our solar system------ until now the only observational evidence came from a brief flyby by the Galileo spacecraft, which didn't observe the moon long enough to confirm a liquid ocean. This discovery marks an important milestone, highlighting what only Hubble can accomplish. In its 25 years in orbit, Hubble has made many scientific discoveries in our own solar system. A deep ocean under the icy surface of Ganymede opens up further exciting possibilities for life beyond Earth. Scientists have already confirmed the existence of an ocean on Europa, another moon orbiting Jupiter, and NASA has announced plans to send an unmanned mission there searching for the life that might come with liquid water. Hubble is a telescope that orbits Earth, but because of its impressive gravitational analyses it can be used to study the inside of far distant planets. Using these same principles, scientists could theoretically detect oceans on distant planets as well. Options: A Cautious B Doubtful C Negative D Favourable Answer: D Favourable Question:
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output: Which of the following best describes the writer's attitude towards Hubble?

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: It is easier to float in the ocean than it is to float in a swimming pool. Do you know why? Ocean water is full of salt-- and salt water can hold up more weigh than fresh water. See for yourself! You Will Need: * 3 cups of warm water * Measuring cup * Wide-mouthed jar * Salt * Spoon * Raw potato You Will Do: Pour 1.5 cups of warm water into the jar.Add 1/3 cup of salt.Stir until the salt is completely dissolved.Add another 1.5 cups of water. Pour it slowly over the back of the spoon into the jar so that the two liquid will not mix together. Gently place the potato into the jar. Do not drop it. What Will Happen: The potato will sink-- but only halfway! Why? Salt water is heavier than fresh water, so it will stay on the bottom. The fresh water will remain on top. The potato is heavier than the fresh water, but it is lighter than the salt water. That is why the potato will sink halfway down. Options: A Step 1 B Step 2 C Step 3 D Step 4 Answer: B Step 2 Question:
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output: In which step of the experiment do you add the salt?

input: Please answer the following: Write a multi-choice question for the following article, with the given choices and answer: Article: For centuries, the body's blood has been linked closely with the emotions.People who show no human emotions or feelings, are said to be cold-blooded killer.For example, the police are searching for a cold-blooded killer.He seems to kill for no reason, and no emotion, as if taking someone's life as nothing. Cold can affect other parts of the body.The expression "get cold feet" has nothing to do with cold or your feet.The expression means being afraid to do something you have decided to do.For example, you agree to be president of an organization.But then you learn that all the other officers have resigned, and all the work of the organizations will be your responsibility.You are likely to get cold feet about being president when you understand the situation. The expression "give someone the cold shoulder" probably comes from the physical act of turning your back toward someone, instead of speaking to him face to face.You may give a cold shoulder to a friend who has not kept a promise he made to you.Or, to someone who has lied about you to others. A cold fish is not a fish.It is a person.But it is a person who is unfriendly, unemotional and shows no love or warmth.A cold fish does not offer much of himself to anyone.Someone who is a cold fish could be cold-hearted.Now a cold-hearted person is someone who has no sympathy.Several popular songs in recent years were about cold-hearted men or cold-hearted women who, without feelings, broke the hearts of their lovers. "Out in the cold" means not getting something that everybody else got.A person might say that everybody but him got a pay raise----he was left out in the cold.And it is not a pleasant place to be. Options: A I give him the cold shoulder B I think he is a cold-blooded man C I think he is a cold fish D I'm likely to get cold feet Answer: A I give him the cold shoulder Question:
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output:
When you refuse to speak to a man and treat him in a distant way, you may express by " _ ".