首页
登录
职称英语
【B1】 [br] 【B4】 [originaltext] According to the evolutionary theory of sleep,
【B1】 [br] 【B4】 [originaltext] According to the evolutionary theory of sleep,
游客
2024-02-14
52
管理
问题
【B1】 [br] 【B4】
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
inefficient
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3450248.html
相关试题推荐
Whatconcernwillthetest-tubebabyraiseaccordingtothepassage?[br]Whati
Whatconcernwillthetest-tubebabyraiseaccordingtothepassage?[br]Which
[originaltext]Onewinterdayin1891,aclassatatrainingschoolinMassa
[originaltext]Onewinterdayin1891,aclassatatrainingschoolinMassa
[originaltext]Notmanyyearsago,awealthyandratherstrangeoldmanname
[originaltext]Withthefastdevelopmentofscienceandtechnology,lifeont
[originaltext]Withthefastdevelopmentofscienceandtechnology,lifeont
[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
随机试题
MembershiphasitsadvantagesJoinRestaurantOwner.comnowandgetinstantacces
John:OhAnne,thatwasawonderfuldinner.That’sthebestmealI’vehadina
Whatwasjustabouttocrawlacrosshislegswhenheawoke?____________________
小强帮助同学伸张正义.和别人打了一架,教师对其进行了温和的教育,肯定了他的正义
A.毕Ⅱ式胃大部切除术 B.迷走神经干切断 C.选择性胃迷走神经切断术 D
患者张某,男,41岁,干部。素有上腹部不适,近日因饮食不当而复发,感上腹部隐隐作
下列属于加快和简化审核类企业债的有( )。 Ⅰ.主体或债券信用等级为AAA
按照理财规划需要对客户信息进行分类,可分为( ) Ⅰ.基本信息 Ⅱ.财务信
××有限公司开发建设了花园新城小区,小区占地面积40亩(1亩=666.6m2),
对污水有机组分总化学需氧量进一步细分,下列几组中,哪组不正确?( )。A.可分
最新回复
(
0
)