Man has a big brain(腦). He can think, learn and speak. Scientists always say that men are different from animals because they can think and learn. They know now that dogs, rats, birds can learn too. They are beginning to understand that men are different from animals because they can speak. Animals cannot speak. They make noises when they are afraid, or angry or unhappy. Apes(類人猿) can understand some things more quickly than humans. One or two of them can learn a few words. But they cannot join words to make sentences. They cannot think like us because they have no language(語言). They can never think about the future. Language is a wonderful thing. Man can build a modern world because he has language. Every child can speak his own language very well when he is four or five, but no animals learn to speak. How do children learn it? Scientists do not really know. What happens inside our body when we speak? They do not know. They only know that man can speak because he has a brain.

1.Men are different from animals because men ______.

A.have brains B.can understand things quickly

C.can think and learn D.can think, learn and speak

2.Scientists now know ______.

A.what happens inside their body when men speak

B.apes can speak

C.men can speak with the help of their brains

D.how children learn to speak

3.The passage mainly talks about ______.

A.animals’ learning B.man and ape

C.brain and language D.man’s brain

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