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【题目】Staying up late _____ our health. We should go to bed early and get up early.

A. is good for

B. is useful for

C. is harmful to

【答案】C

【解析】

试题分析:句意:熬夜对于我们的健康有害。我们应该早睡早起。A. is good for对……有意;B. is useful for ……有用;C. is harmful to对……有害根据题意故选C.

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