单选题I don"t think he could have done such a stupid thing last night, ______?

单选题Simon sat in the chair, ______ without a word.

单选题Mike found his hotel in ______.

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单选题Man has a big brain that can think, learn and speak. Scientists once thought that men are different from animals 1 they can not think and learn. They know now that dogs, monkey and birds can learn, too. They are beginning to understand that men are different from animals because they can speak. Animals can"t speak. They make noises when they are afraid, or angry or unhappy. Apes (类人猿) can understand something 2 than men. One or two of them have learned 3 words. But they can"t join words to make sentences. They can"t think 4 as because they have 5 languages. Language is a wonderful thing. Man has 6 build a modern world because he uses language. 7 child can speak his own language well when he is four or five, 8 no animal learns to speak. 9 do children learn it? Scientists do not really know. 10 happens inside our body when we speak? They do not know that man can speak because he has a brain.

单选题—Is Jack at home now? —Yes, I think ______.

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单选题[此试题无题干]

单选题Is there enough ______ for me in the car?

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单选题Which of the following is still unknown to us?

单选题Why not ______ at home to be relaxed? A. staying B. stayed C. stay

单选题When Mrs. Jenkins was talking to the young man, ______.

单选题What will the Professor Zhou do?

单选题There ______ a speech contest tomorrow morning.