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
2019-06-03
81
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.
【C20】
选项
A、differences
B、similarities
C、resemblance
D、opposites
答案
A
解析
本题考查名词辨析。此处句意为“但是,脑电图仪的发展以及人们1937的发现——大脑活动在睡眠状态和清醒状态下存在着巨大的______——为睡眠这一课题的科学研究开辟了道路”。根据上下文和常识,可知A.differences“差别,差异”符合题意,为正确答案。similarity“相似性”,resemblance“相似之处,类似之处”,opposite“对立面,对立物”,均不符合题意,故排除。
转载请注明原文地址:https://kaotiyun.com/show/IHnZ777K
0
考研英语一
相关试题推荐
TheEarth’sdailyclock,measuredinasinglerevolution,istwenty-fourhours.Thehumanclock,【B1】______,isactuallyabout
TheEarth’sdailyclock,measuredinasinglerevolution,istwenty-fourhours.Thehumanclock,【B1】______,isactuallyabout
Youshouldassume,intryingforjobs,thatyouwillnotbetheonlyapplicant.Thesinglemostprevalentdecidingfactoristhe
Youshouldassume,intryingforjobs,thatyouwillnotbetheonlyapplicant.Thesinglemostprevalentdecidingfactoristhe
Youshouldassume,intryingforjobs,thatyouwillnotbetheonlyapplicant.Thesinglemostprevalentdecidingfactoristhe
Youshouldassume,intryingforjobs,thatyouwillnotbetheonlyapplicant.Thesinglemostprevalentdecidingfactoristhe
Olderpeoplemustbegivenmorechancestolearniftheyaretocontributetosocietyratherthanbeafinancialburden,accordi
Olderpeoplemustbegivenmorechancestolearniftheyaretocontributetosocietyratherthanbeafinancialburden,accordi
JusthowmuchdoestheConstitutionprotectyourdigitaldata?TheSupremeCourtwillnowconsiderwhetherpolicecansearchthe
随机试题
甲公司于2012年1月1日发行4年期一次还本、分次付息的公司债券,每年1月1日支付上年利息。债券面值1000000元,票面年利率5%,发行价格950520元。甲公司对利息调整采用实际利率法进行摊销,经计算谈债券的实际利率为6%。该债券2013年年末利息调整
A.茵陈鳖甲汤B.茵陈蒿汤C.半夏泻心汤D.四逆散E.蒿芩清胆汤清胆利湿、和胃化痰的方剂是
防水混凝土在施工中的注意事项有(.)。
首次公
()是一般意义上的优先股票,其优先权不是体现在股息多少上,而是在分配顺序上。
如果确立了贷款意向,则表明贷款可以正式受理。在该阶段,业务人员不需要做到()
教育储蓄的对象(储户)为()。
不成熟的冲突解决方式有【】
()是学习者通过亲自接触和广泛了解教育现状,对取得的第一手资料进行分析和研究,以发现某些规律或倾向性问题的学习方法。
y=在上的平均值为=_____________.
最新回复
(
0
)