首页
登录
职称英语
【B1】 [br] 【B8】 [originaltext] According to the evolutionary theory of sleep,
【B1】 [br] 【B8】 [originaltext] According to the evolutionary theory of sleep,
游客
2023-07-13
61
管理
问题
【B1】 [br] 【B8】
According to the evolutionary theory of sleep, evolution equipped us with a regular pattern of sleeping and waking. The theory does not deny that sleep provides some important restorative functions. It merely says that evolution has progammed us to perform those functions at a time when activity would be inefficient and possibly dangerous. However, sleep protects us only from the sort of trouble we might walk into; it does not protect us from trouble that comes looking for us. So we sleep well in a familiar, safe place, but we sleep lightly, ff at all, when we fear that bears will nose into the tent.
The evolutionary theory accounts well for differences in sleep among creatures. Why do eats, for instance, sleep so much, while horses sleep so little? Surely eats do not need five times as much repair and restoration as horses do. But cats can afford to have long periods of inactivity because they spend little time eating and are unlikely to be attacked while they sleep. Horses must spend almost all their waking hours eating, because what they eat is very low in energy value. Moreover, they cannot afford to sleep too long or too deeply, because their survival depends on their ability to run away from attackers.
选项
答案
note
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2833986.html
相关试题推荐
[originaltext]ThedaysofthehunterarealmostoverinIndia.Thisispart
[originaltext]ThedaysofthehunterarealmostoverinIndia.Thisispart
[originaltext]ThedaysofthehunterarealmostoverinIndia.Thisispart
[originaltext]Ifparentsbringupachildwiththeaimofturninghiminto
[originaltext]W:WillyoubehavingThanksgivingathomeorwillyoubegoingt
[originaltext]W:WillyoubehavingThanksgivingathomeorwillyoubegoingt
[originaltext]W:Thatcomesto$160.M:Onehundredandsixtydollars!Ijustc
[originaltext]W:Thatcomesto$160.M:Onehundredandsixtydollars!Ijustc
[originaltext]M:I’vespentallthemoneythismonth.That’sterrible.W:Yous
[originaltext]M:I’vespentallthemoneythismonth.That’sterrible.W:Yous
随机试题
Giraffeshave(eyes)thatallowthem(seeing)inalldirectionswithout(twistin
WhatistheJapan’sunemploymentrateinJanuary?[br][originaltext](26)Ja
[originaltext]Alotofpeoplethinkthatculturalanthropologyisjustabou
[img]2016m3s/ct_eyyjscm_eyyjscd_0125_20161[/img][br]【D10】[originaltext]Mo
下列选项中,哪一个朝代不是中国古代舞蹈史上舞蹈艺术发展的高峰?()A.周代
A.泡法B.淘洗法C.漂法D.润法E.淋法具腥臭异常气味的药材常采用的处理方法是
橘红在贝母瓜蒌散中的用意是A:理气化痰B:疏肝解郁C:和胃降逆D:行气消痞
人体最大的体腔是A.盆腔 B.胸膜腔 C.腹膜腔 D.蛛网膜下腔 E.硬
施工现场临建用房之间的防火间距需要满足一定要求,其中可燃材料堆场与其加工厂与固定
男,35岁,右上腹胀痛3个月。颈部可见蜘蛛痣,肝肋下2cm,质硬,无触痛,右季肋
最新回复
(
0
)