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Read the article and select the best answer. Article: Do you know how it is when you see someone yawn and you start yawning too? Or how hard it is to be among people laughing and not laugh yourself? Well, apparently it's because we have mirror neurons in our brains. Put simply, the existence of mirror neurons suggests that every time we see someone else do something, our brains imitate it,whether or not we actually perform the same action. This explains a great deal about how we learn to smile, talk, walk, dance or play sports. But the idea goes further: mirror neurons not only appear to explain physical actions they also tell us that there is a biological basis for the way we understand other people. Mirror neurons can undoubtedly be found all over our brains, but especially in the areas which relate to our ability to use languages, and to understand how other people feel. Researchers have found that mirror neurons relate strongly to language. A group of researchers discovered that if they gave people sentences to listen to (for example: "The hand took hold of the ball"), the same mirror neurons were as when the action was actually performed (in this example, actually taking hold of a ball). Any problems with mirror neurons may well result in problems with behavior. Much research suggests that people with social and behavioral problems have mirror neurons which are not fully functioning. However, it is not yet known exactly how these discoveries might help find treatments for social disorders. Research into mirror neurons seems to provide us with ever more information concerning how humans behave and interact .Indeed, it may turn out to be the equivalent for neuroscience of what Einstein's theory of relativity was for physics. And the next time you feel the urge to cough in the cinema when someone else does---well, perhaps you'll understand why. Question: What is the passage mainly about? Options: A: Ways to find mirror neurons. B: Problems of mirror neurons. C: Existence of mirror neurons. D: Functions of mirror neurons.
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D

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Read the article and select the best answer. Article: Chokwe Selassie, aged 13, is working hard to help drivers avoid potholes . The eighth-grader was inspired to kick off his creation on a recent morning, when his mother was driving him to school. Their car was damaged as it went over a huge pothole in the middle of the street in their hometown of Jackson, Mississippi. He decided to do something about the pothole problem in his city. Chokwe developed the app with his friends Rodriguez Ratliff and Emmanuel Brooks. When the app detects a pothole, it is highlighted in red. And if you get close to the pothole, your phone will warn you with a beep. Drivers can also use the app to report any potholes and look for other routes they can take to avoid roads that have them. The app relies on current available information about the streets of Jackson, already stored in a database of the city's 311 call system. Through the call system, citizens dial 3-1-1 to report non-emergency problems which include potholes. Chokwe and his friends determined that focusing on the 10 busiest streets in Jackson would give them a large enough sample size to test the prototype. While developing the app, the boys took part in a Minority Male Makers Program sponsored by Verizon and held at Jackson State University. They learned 3D printing and design, and how to create apps. Through the program Chokwe and his friends received encouragement and guidance. Although the app isn't yet available for sale, Chokwe is already looking for ways to improve the app. He hopes to add more to it until it spreads all over the country. Question: What is the app used to do? Options: A: Warn drivers about potholes. B: Help drivers obey traffic rules. C: Stop drivers using mobile phones. D: Tell drivers to avoid red lights.
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A

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Read the article and select the best answer. Article: Historians usually just study great things that happened in the past time, but Drew Faust has made history! On February 11, 2007, Faust was named president of Harvard University.She is the first woman to hold the position in the school's 371-year history. "I am a historian," she said."I've spent a lot of time thinking about the past, and about how it shapes the future.No university in the country, perhaps the world, has as remarkable a past as Harvard's." "And our common enterprise is to make Harvard's future even more remarkable than its past.That will mean recognizing and building on what we already do well.It will also mean recognizing what we don't do as well as we should, and not being satisfied until we find ways to do better." It is her great desire for improvement and willingness to try out new ideas that have given Drew success in a world controlled by men."This is a man's world, my girl, and the sooner you learn that, the better off you'll be." Drew Faust recalls her mother telling her this when she was young, but she didn't _ it. Faust grew up in a well-off family in Virginia's Shenandoah Valley in the 1950s.Even then, she was a trailblazer .A conversation with her family's black handyman and driver inspired her to write a letter, on school notebook paper, to President Dwight Eisenhower. She asked that he help bring US citizens together in the south, a much divided part of the country at the time. "Drew Faust is a historian with her eyes on the future," said Susan Graham, a professor of Harvard.Many of the university's schools said that they believe Harvard will have a brighter future under the leadership of Drew Faust. Question: What do we know about historians? Options: A: They usually study great things that happened in the past. B: They are usually presidents of universities. C: They are usually born in well-off families. D: They are usually women.
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A