题目内容

We should sleep ______eight hours a day, or it’s bad for our health.
A. at most  B.least C. at least

C

解析试题分析：句意：每天我们最少睡八个小时。否则对健康有害。at most至多； at least至少。结合句意，故选C
考点：考查副词的用法

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