首页
登录
职称英语
【B1】 [br] 【B7】 [originaltext] According to the evolutionary theory of sleep,
【B1】 [br] 【B7】 [originaltext] According to the evolutionary theory of sleep,
游客
2023-07-13
15
管理
问题
【B1】 [br] 【B7】
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
familiar
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/2833985.html
相关试题推荐
[originaltext]TheEuropeanswholefttheirhomelandinthe18thand19thce
[originaltext]TheSpiceGirlswereanamazinglysuccessfulsinginggroupwh
[originaltext]TheSpiceGirlswereanamazinglysuccessfulsinginggroupwh
[originaltext]TheSpiceGirlswereanamazinglysuccessfulsinginggroupwh
[originaltext]Someofthemostinterestingbuildingsintheworldarethep
[originaltext]M:Isthatamap?Areyougoingsailingorsomething?W:Iwish.
[originaltext]M:Hi,Janet.Wherewereyouatlunchtime?Iwassavingaseatfo
[originaltext]M:Hi,Janet.Wherewereyouatlunchtime?Iwassavingaseatfo
[originaltext]M:Hi,Janet.Wherewereyouatlunchtime?Iwassavingaseatfo
[originaltext]M:Excuseme,couldyoutellmeifthere’sagasstationnearher
随机试题
America’s-mostpopularnewspaperwebsitetodayannouncedthattheeraoffre
Ourresearchhasfocusedonadrugwhichisso________astobeabletochange
A.F=48.05∠69.94° B.F=48.05∠(-69.94°) C
帕金森病特征性症状是()A.头痛 B.呕吐 C.意识丧失 D.静止性
某公司销售收入30000万元,利润总额为6000万元,变动成本率为60%,则安全
政府财政分配活动的中心环节是()。A.政府预算收支 B.政府收入 C.政府
女性,20岁。20天前因急性化脓性扁桃腺炎引起发热,治疗后好转。3天前出现眼睑浮
共用题干 一般资料:求助者,女性,28岁,中学教师。案例介绍:求助者由于与丈夫
A.非处方药专有标识 B.非处方药红色专有标识 C.非处方药绿色专有标识
某项目有甲、乙、丙、丁4个可行方案,投资额和年经营成本见下表。若基准收益率为1
最新回复
(
0
)