首页
登录
职称英语
【B1】 [br] 【B6】 [originaltext] According to the evolutionary theory of sleep,
【B1】 [br] 【B6】 [originaltext] According to the evolutionary theory of sleep,
游客
2024-02-14
31
管理
问题
【B1】 [br] 【B6】
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
protect
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3450250.html
相关试题推荐
Whatconcernwillthetest-tubebabyraiseaccordingtothepassage?[br]Which
[originaltext]Onewinterdayin1891,aclassatatrainingschoolinMassa
[originaltext]Onewinterdayin1891,aclassatatrainingschoolinMassa
[originaltext]Notmanyyearsago,awealthyandratherstrangeoldmanname
[originaltext]Withthefastdevelopmentofscienceandtechnology,lifeont
[originaltext]W:CanIhelpyou,sir?M:Yes,(19)Iwaswantingsomewheretost
[originaltext]W:CanIhelpyou,sir?M:Yes,(19)Iwaswantingsomewheretost
[originaltext]W:CanIhelpyou,sir?M:Yes,(19)Iwaswantingsomewheretost
[originaltext]Jane:Ron,whatareyoudoing?Ron:Ah,nothing.I’mjustlooking
[originaltext]Jane:Ron,whatareyoudoing?Ron:Ah,nothing.I’mjustlooking
随机试题
A.BankofAmericaannouncedthatitwasreadytorepaythe$45billionitrecei
下面不属于消防泵组及控制柜准工作状态要求的是()。A.电气控制柜平时应处于自动
范缜的“刃利”之喻是直接反对()而提出的。A.形亡神灭 B.形神相即 C.
导线1上有电压波u传播时,与导线1平行的导线2上会产生感应电压波,
2~3个月小儿"生理性贫血"时A.红细胞数降至7.0×10/L、血红蛋白量降至2
区域类型多种多样,其边界有的是模糊的,有的是明确的。()
《处方管理办法》规定,调剂药师应当对麻醉药品和第一类精神药品消耗量进行专册登记,
A.头孢克洛 B.克拉维酸 C.亚胺培南 D.氨曲南 E.头孢氨苄可抑制
现代社会,专业分工的极度细化使得普通人在每一个专业领域内都必须倚仗专家的参谋。专
某期货公司接受客户李某委托为其进行白糖期货交易,李某根据白糖期货近期的表现,总结
最新回复
(
0
)