2. 职称英语
  3. Scientists used to think that men are different from animals because they c

Scientists used to think that men are different from animals because they c

游客2023-07-30  53
问题     Scientists used to think that men are different from
animals because they can think and learn. They now know
how animals can learn—dogs, rats, birds—and worms can      【M1】 ______
learn. So scientists are begin to understand that men are    【M2】 ______
different from animals because they can speak. They          【M3】 ______
makes noises when they are afraid, or angry, or unhappy.
Apes are our nearest cousins. They can understand some       【M4】 ______
things much quickly than human beings, and one or two
have learned a few words. But they are still different from  【M5】 ______
us. They can join words and make sentences. They can
not think like us because of they have no language. They     【M6】 ______
can never think about the past or the future. Language is a  【M7】 ______
wonderfully thing. Man has developed civilization because
he has language. Every child can not speak his own
language very well when he is four or five—but no animals   【M8】 ______
learn to speak. How children learn? Scientists do not really 【M9】 ______
know. What happened when we speak? They only                 【M10】 ______
know that man can speak because he has a big brain.
[br] 【M6】
选项
答案 because of改成because
解析 此处考查连接词的用法。因为后面是从句they have no language，所以此处不能用介词短语because of，只能用连接词because。
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