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,【B1】______, is actually about tw
The Earth’s daily clock, measured in a single revolution, is twenty-four hours. The human clock,【B1】______, is actually about tw
admin
2017-08-31
24
问题
The Earth’s daily clock, measured in a single revolution, is twenty-four hours. The human clock,【B1】______, is actually about twenty-five hours. That’s【B2】______scientists who study sleep have determined from human subjects who live for several weeks in observation chambers with no【B3】______of day or night. Sleep researchers have【B4】______other surprising discoveries as well.
We spend about one-third of our lives asleep, a fact that suggests sleeping,【B5】______eating and breathing, is a fundamental life process. Yet some people almost never sleep, getting by on as【B6】______as fifteen minutes a day. And more than seventy years of【B7】______into sleep deprivation, in which people have been kept【B8】______for three to ten days, has【B9】______only one certain finding: Sleep loss makes a person sleepy and that’s about all; it causes no lasting ill【B10】______. Too much sleep, however, may be【B11】______for you.
These findings【B12】______some long-held views of sleep, and they【B13】______questions about its fundamental purpose in our lives. In【B14】______, scientists don’t know just why sleep is necessary.
Some scientists think sleep is more the result of evolutionary habit than【B15】______actual need, Animals sleep for some parts of the day perhaps because it is the【B16】______thing for them to do: it keeps them【B17】______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【B18】______and had little reason to question the reason or need for【B19】______. But the development of the electroencephalograph and the resulting discovery in 1937 of dramatic【B20】______in brain activity between sleep and wakefulness opened the way for scientific inquiry in the subject.
【B18】
选项
A、coldness
B、warmth
C、darkness
D、shade
答案
C
解析
此处句意为“在发明电以前,人们至少在每天的某些时候不得不生活在______中”。 根据上文Before the advent of electricity(在发明电以前)和常识,可以直接选出正确答案C. darkness。coldness“冷,冷淡”,warmth“温暖,暖和”,shade“阴凉处,背阴”,均不符合题意, 故排除。
转载请注明原文地址:https://kaotiyun.com/show/R6IZ777K
0
考研英语一
相关试题推荐
Theproblemwithtoday’shousingcrisis,politically,isthatitisjustnotallthatvisible.AttheendoftheSecondWorldWa
Theproblemwithtoday’shousingcrisis,politically,isthatitisjustnotallthatvisible.AttheendoftheSecondWorldWa
"AMZN"isafour-letterwordtomanybooksellers.Theonlineretailerhasbeen【C1】______ofkillingthebooksellingindustry.It
"AMZN"isafour-letterwordtomanybooksellers.Theonlineretailerhasbeen【C1】______ofkillingthebooksellingindustry.It
Whatdoesthehamburgersayaboutourmodemfoodeconomy?Alot,actually.OverthepastseveralyearsWaldoJaquithintendedto
Writeanessaybasedonthefollowingchart.Inyourwriting,youshould1)interpretthechart,and2)giveyourcommen
WhenLiamMcGeedepartedaspresidentofBankofAmericainAugust,hisexplanationwassurprisinglystraightup.Ratherthancl
Thefollowingparagraphsaregiveninawrongorder.ForQuestions1-5,youarerequiredtoreorganizetheseparagraphsintoac
Inhis"Odyssey",Homerimmortalizedtheideaofresistingtemptationbyhavingtheprotagonisttiedtothemastofhisship,to
随机试题
一方面,教育与社会其他因素的关系密切;另一方面,教育具有相对独立性。
高压容器不允许使用()封头。
一般来说,建造价的估计方法有()Ⅰ面积定额法Ⅱ容积定额法Ⅲ单项成本法Ⅳ计量测定法
某股票市场价格为10元,预期每股收益为0.5元,并保持10%的增长速度,则其市盈率为()。
期货公司持有的金融资产,按照( )采取不同比例进行风险调整。
对公司规模变动特征和扩张潜力的分析,主要包括()。
当评价公司业绩时现金流量指标属于重点关注的阶段有()。
Bankershavebeenblamingthemselvesfortheirtroublesinpublic.Behindthescenes,theyhavebeentakingaimatsomeoneelse;
AsheisgoingtoworkinHollandfortwoyears,hewillbepartedfromhistwochildren.
Nottoomanydecadesagoitseemed"obvious"bothtothegeneralpublicandtosociologiststhatmodemsocietyhaschangedpeopl
最新回复
(
0
)