首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
The Earth’s daily clock, measured in a single revolution, is twenty-four hours. The human clock, 【C1】______, is actually about t
The Earth’s daily clock, measured in a single revolution, is twenty-four hours. The human clock, 【C1】______, is actually about t
admin
2018-01-31
43
问题
The Earth’s daily clock, measured in a single revolution, is twenty-four hours. The human clock, 【C1】______, is actually about twenty-five hours. That’ s【C2】______scientists who study sleep have determined from human subjects who live for several weeks in observation chambers with no【C3】______of day or night. Sleep researchers have【C4】______other surprising discoveries as well.
We spend about one-third of our lives asleep, a fact that suggests sleeping, 【C5】______eating and breathing, is a fundamental life process. Yet some people almost never sleep, getting by on as【C6】______as fifteen minutes a day. And more than seventy years of【C7】______into sleep deprivation, in which people have been kept【C8】______for three to ten days, has【C9】______only one certain finding: Sleep loss makes a person sleepy and that’s about all; it causes no lasting ill【C10】______. Too much sleep, however, may be【C11】______for you.
These findings【C12】______some long-held views of sleep, and they【C13】______questions about its fundamental purpose in our lives. In【C14】______, scientists don’t know just why sleep is necessary.
Some scientists think sleep is more the result of evolutionary habit than【C15】______actual need, Animals sleep for some parts of the day perhaps because it is the【C16】______thing for them to do: it keeps them【C17】______and hidden from predators; it’s a survival tactic. Before the advent of electricity, humans had to spend at least some of each day in【C18】______and had little reason to question the reason or need for【C19】______. But the development of the electroencephalograph and the resulting discovery in 1937 of dramatic【C20】______in brain activity between sleep and wakefulness opened the way for scientific inquiry in the subject.
【C16】
选项
A、worst
B、best
C、only
D、natural
答案
B
解析
本题考查形容词辨析。此处句意为“动物在一天中的某些时候睡觉,可能是因为睡觉对于它们来说是______的事”。根据下文的hidden from predators(躲开食肉动物),it’s a survival tactic(这是一条生存策略)可知B.best符合题意,为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/OCBZ777K
0
考研英语一
相关试题推荐
[A]What,precisely,qualifiessomeoneasaworkaholic?There’sstillnosingleacceptedmedicaldefinition.Butpsychologistsh
[A]What,precisely,qualifiessomeoneasaworkaholic?There’sstillnosingleacceptedmedicaldefinition.Butpsychologistsh
Howstupiddoesoneneedtobetogetajobreadingthetelevisionnews?IsitactuallybeneficialforTVnewsreaderstohave,i
Dieting,accordingtoanoldjoke,maynotactuallymakeyoulivelonger,butitsurefeelsthatway.Nevertheless,evidencehas
Dieting,accordingtoanoldjoke,maynotactuallymakeyoulivelonger,butitsurefeelsthatway.Nevertheless,evidencehas
Dieting,accordingtoanoldjoke,maynotactuallymakeyoulivelonger,butitsurefeelsthatway.Nevertheless,evidencehas
Dieting,accordingtoanoldjoke,maynotactuallymakeyoulivelonger,butitsurefeelsthatway.Nevertheless,evidencehas
Dieting,accordingtoanoldjoke,maynotactuallymakeyoulivelonger,butitsurefeelsthatway.Nevertheless,evidencehas
随机试题
A.水脏B.娇脏C.刚脏D.孤府肾为
将定性论证法和定量论证法这两类方法结合使用所产生的一种论证的方法是()
小型X线机的供电电源多数是
流行性出血热早期休克的原因是
姜某有一处房屋,当他得知有一座工厂将要在附近建设,且工厂的噪音将会很大,姜某于是将房屋卖给想得到一处环境安静的房屋的张某,姜某的行为违背了民法的哪一原则?()
夹套管的形式有()。
生产延迟又称为()。
以强迫接受的方式卖花、卖唱、开车门、拎包等行为属于()。
“受到损害的一方有时只能得到少于他实际损害的补偿。这儿有一个一般性的排除原则,即‘间接损害’原则。它的意思是,对所有的损失都进行补偿是不公平的也是不可行的,虽然这些损害可能产生于违反合同。”解释在合同法上什么样的后果会得到补偿。
Avoideggs.Drink8glassesofwateraday.Eatingcarbswill(1).Nutritionaladvicesuchasthishasbeentoutedforyearsbu
最新回复
(
0
)