---The worksite next to my house was so noisy.---You a sleepless night.A. must have had B. would have hadC. should have had D. can have had 题目和参考答案——青夏教育精英家教网—

题目内容

---The worksite next to my house was so noisy.

---You ____ a sleepless night.

A. must have had B. would have had

C. should have had D. can have had

【解析】

试题分析：考查情态动词。句意：——我家隔壁工地太吵了。——你一定度过了一个无眠的夜晚。故选A。A：must have done一定做了某事；B：本来想做、要做但没做；C：本应该做了某事而没有做；D：本能够做某事。

考点：考查情态动词

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Studies have documented that smiling is a universal and effective way to lift mood. But in the latest research on the power of the smile, researchers led by Marcus Munafo of the University of Bristol in England found that even seeing smiles on the faces of others can have a profound effect on a person's tendency toward violence or aggression — that is, as long as that person recognizes the smile as one of happiness, and not as a sneer (讥笑)．

Munafo and his colleagues conducted a series of experiments involving normal adults and highly aggressive teens referred to a youth program, either by educational authorities or the courts. About 70% of the teens already had a criminal record.

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