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It is 【B1】 true that all of us need to sleep, but most people 【B2】 know why and how they sleep. We know that if we sleep wel
It is 【B1】 true that all of us need to sleep, but most people 【B2】 know why and how they sleep. We know that if we sleep wel
admin
2011-01-10
73
问题
It is 【B1】 true that all of us need to sleep, but most people 【B2】 know why and how they sleep.
We know that if we sleep well, we feel rested. And if we don’t sleep well, we often feel tired and 【B3】 . It seems there are two 【B4】 of sleep, 【B5】 rest and emotional and psychological rest, through which we can rest our bodies and our 【B6】 .
Every night we have two kinds of sleep: active sleep and passive sleep. The passive sleep gives our body the rest that’s needed and 【B7】 us for active sleep, in which dreaming occurs. The brain rests, then it becomes active, then dreaming occurs. This 【B8】 is repeated several times 【B9】 the night. During eight hours of sleep, people dream for a 【B10】 of one and a half hours on the average.
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答案
really
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英语题库普高专升本分类
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英语
普高专升本
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