問題詳情

All through the animal kingdom, sleep ranks right up there with food, water and sexual intercourse for the survival ofthe species. Everybody does it, from fruit flies to Homo sapiens. Yet 31 its clear necessity and lots of investigation,scientists still do not know precisely what sleep is for.Is it to refresh the body? Not really. Researchers have 32 to find any vital biological function that sleep restores.As far as anyone can tell, muscles do not need sleep, just intermittent periods of relaxation. The rest of the body chugsalong seemingly 33 whether the brain is asleep or awake.Is it to refresh the mind? That is closer to the mark. The brain 34 a good night’s sleep. But there is no agreementamong sleep researchers about what form that benefit takes. One theory is that sleep allows the brain to review andconsolidate all the streams of information it gathered while awake. 35 suggests that we sleep in order to allow thebrain to stock up on fuel and flush out wastes. A third, which has been gaining currency, is that sleep operates in somemysterious way to help you master various skills, such as how to play the piano and ride a bike.
31
(A)considering
(B)despite
(C)with
(D)provided

參考答案

答案：B
難度：適中0.5
統計：A(7),B(11),C(2),D(2),E(0)

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