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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
A.The experiment was carried out to find the answer to how genes affect sleep. B.The experiment took a period of more than two weeks to reach a conclusion. C.His volunteers were divided into two groups with two different sleeping patterns. D.Blood samples
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