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  3. 根据下面资料，回答题 I′ve often wondered how exactly sleep, or lack of it, can have s...

根据下面资料，回答题 I′ve often wondered how exactly sleep, or lack of it, can have s...

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问题 根据下面资料，回答题
I′ve often wondered how exactly sleep, or lack of it, can have such an awful effect on our bodies and, guess what, how much we sleep switches good genes on and bad genes off.
In the first half of 2013, the Sleep Research Centre at the Univers
选项 A.When there is a sleep restriction, genes to do with cell repair and replacement function less.
B.In a sleep, several hundred genes change in the amount. The more changes, the worse results.
C.When genes are up regulated, they do good to health; when gen
答案D
解析推断题。根据文章最后一段“The important message is that getting close to eight hours of sleep a night Can make a dramatic difference to our health in just a few days through the way it looks after our genes．”可知，8个小时的睡眠模式对人体是非常有益的，因为这样的睡眠时间能很好地照料我们的基因，D项是此段话的同义表达，故选D。A
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