首页
登录
职称英语
【B1】 [br] 【B3】 [originaltext] According to the evolutionary theory of sleep,
【B1】 [br] 【B3】 [originaltext] According to the evolutionary theory of sleep,
游客
2024-02-14
41
管理
问题
【B1】 [br] 【B3】
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
evolution
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3450247.html
相关试题推荐
[originaltext]ThedaysofthehunterarealmostoverinIndia.Thisispart
[originaltext]ThedaysofthehunterarealmostoverinIndia.Thisispart
[originaltext]ThedaysofthehunterarealmostoverinIndia.Thisispart
[originaltext]Ifparentsbringupachildwiththeaimofturninghiminto
[originaltext]Ifparentsbringupachildwiththeaimofturninghiminto
[originaltext]W:WillyoubehavingThanksgivingathomeorwillyoubegoingt
[originaltext]W:WillyoubehavingThanksgivingathomeorwillyoubegoingt
[originaltext]W:WillyoubehavingThanksgivingathomeorwillyoubegoingt
[originaltext]W:Thatcomesto$160.M:Onehundredandsixtydollars!Ijustc
[originaltext]M:I’vespentallthemoneythismonth.That’sterrible.W:Yous
随机试题
Thefriendshadspenttheirholiday______.[br]Thetwofriendsreadthenewspa
Teachersinthisschoolwereencouragedtousedramaasa(n)______oflearning.A、
Theengineerclaimsthatthisengineis______asthepreviousone.A、twicepower
假定一个人是严格风险规避型的,拥有初始财富w,但是也有概率为π的可能性损失D元钱
A.降气平喘,祛痰止咳 B.清热化痰,理气止咳 C.宣肺降气,清热化痰 D
()认为投资者应购买并持有近期走势明显强于大盘指数的股票。A.道氏理论 B.
具有增液润燥功用的方剂是A.五仁丸 B.疏凿饮子 C.增液汤 D.败毒散
下列各项中,不属于国家审计特点的是( )。[2011年初级真题]A.法定性
根据消费税法律制度的规定,下列情形中,准予抵扣已纳消费税的有()。A.外购已
主要应用于地板辐射采暖系统盘管的是()。A.丁烯管(PB管) B.交联聚乙烯
最新回复
(
0
)