______,weshouldsleepatsleepatleast8hoursaday,butinpract...
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问题详情:
______, we should sleep at sleep at least 8 hours a day, but in practice we sleep less than that.
A. In fact B. In theory
C. On average D. In particular
【回答】
B
知识点:词组 短语
题型:选择题
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