题目

阅读下面短文，从A、B、C、D四个选项中 选出最佳选项。 Why are dogs our best friends? Maybe because they can understand our words much better than we thought, according to a study in Hungary. The study showed that dogs understand not only what we say, but also how we say it. "The results were exciting and surprising," said Attila Andics, a researcher from a university in Budapest. For the study, the researchers first trained 13 dogs for months. The dogs had to sit quietly inside machines so that the researchers could check their brain activities. Then the researchers put headphones(耳机) on dogs and played people's voices to them. There were four different voices. Some were of positive words, such as "well done", or negative words like "not good". The words were also in different tones(语气). Some were positive, some were neutral(中立的), and some were negative. Brain scans(扫描) showed that dogs could recognize(辨别出) different words, as well as the tones of words, much like people do. The positive words with a positive tone brought the strongest activity in their brains' reaction centers(反应中枢). "It showed that for dogs, nice words can work very well as a reward(奖赏), but it works best if both words and tones match," said Andics. They also found that dogs deal with meaningful words with the left side of the brain and tones with the right. Human brains work in the same way. Andics said it gave us a new understanding of language. That is to say, not only humans understand the meaning in words, but also the dogs. （1） For the study, which of the following didn't the researchers do? A . They made dogs sit inside machines. B . They played with the dogs. C . They scanned the dogs' brains. D . They played people's voices to the dogs. （2） Which kind of voices do dogs think as a best reward? A . A neutral word with a neutral tone. B . A neutral word with a positive tone. C . A positive word with a neutral tone. D . A positive word with a positive tone. （3） For both dogs and humans, which side of the brain deals with tones? A . The left side for both dogs and humans. B . The left side for dogs and the right side for humans. C . The right side for both dogs and humans. D . The right side for dogs and the left side for humans. （4） What is the main idea of the passage? A . Dogs are humans' best friends. B . Dogs are born with the ability to learn humans' language. C . Dogs can understand the meaning and tone in words. D . Dogs can also learn humans' language. 答案： B D C C

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