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  3. Prominent among theories of the function of sleep is Meddis’ immobilization

Prominent among theories of the function of sleep is Meddis’ immobilization

游客2024-01-10  46
问题     Prominent among theories of the function of sleep is Meddis’ immobilization hypothesis, which holds that sleep, rather than serving a restorative function, plays a protective role during times that animals cannot be usefully engaged in other activities. Meddis reasoned that animals not immediately threatened by predators would be safer if they passed the time sleeping. Sleep would prevent an animal from moving or responding to nonthreatening stimuli in ways that might attract the attention of predators.
    However, that hypothesis cannot easily explain why one often observes a rebound in sleep time or intensity following a period of sleep deprivation. Neither does the hypothesis explain the existence of various states of sleep, which themselves may be associated with different functions. [br] In the context of the passage as a whole, the highlighted portion serves primarily to
选项 A、present the thinking that led scientists to qualify a widely accepted view
B、describe the basis on which a hypothesis was advanced
C、illustrate the kind of reasoning that is applied in a branch of science
D、explain how a hypothesis can be tested empirically
E、relate the analysis that refined a tentative explanation
答案 B
解析 a hypothesis对应麦迪斯的观点。符合定位句3s版本，正确。A项本题属于功能题，正确答案应该是标黑体句子的3s版本，即“睡眠会起到保护作用的原因”。a widely accepted view对应的是麦迪斯的观点，qualify则表明该选项说的是第二段内容，定位错误。C项a branch of science在原文中没有对应。D项文中未提及empirically。E项文中未提及a tentative explanation和refine。
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