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
The Earth’s daily clock, measured in a single revolution, is twenty-four hours. The human clock, 【B1】______ , is actually about
admin
2017-10-23
56
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 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 yielded only one certain findings: Sleep loss makes a person sleepy and that’s about all; it causes no lasting ill 【B9】______ . Too much sleep, however, may be 【B10】______ for you.
These findings 【B11】______ some long-held views of sleep, and they raise questions about its fundamental purpose in our lives. In 【B12】______ , scientists don’t know just why sleep is necessary.
"We get sleepy, and when we sleep, that sleepiness is reversed," Dr. Howard Roffwarg of the University of Texas in Dallas explains. "We know sleep has a function, 【B13】______ we feel it has a function. We can’t put our finger on it, but it must, 【B14】______ in some way, direct or indirect, have to do with rest and restitution."
Other 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.
【B11】
选项
A、challenge
B、deny
C、doubt
D、dispute
答案
A
解析
本题考查上下文推理。challenge意为“质询(某人某事的合法性、正确性)”;deny意为“否认;否定;拒绝相信”;doubt意为“怀疑,拿不准”;dispute意为“争论,辩论;驳斥”。根据上下文的意思,正确答案是A。
转载请注明原文地址:https://kaotiyun.com/show/YMIZ777K
0
考研英语一
相关试题推荐
Thefollowingparagraphsaregiveninawrongorder.ForQuestions1-5,youarerequiredtoreorganizetheseparagraphsintoac
Inthefollowingtext,somesentenceshavebeenremoved.ForQuestions1-5,choosethemostsuitableonefromthelistA-Gtofi
Inthefollowingtext,somesentenceshavebeenremoved.ForQuestions1-5,choosethemostsuitableonefromthelistA-Gtofi
Prettyinpink:adultwomendonotrememberbeingsoobsessedwiththecolour,yetitispervasiveinouryounggirls’lives.It
Lonelypeople,itseems,areatgreaterriskthanthegregariousofdevelopingillnessesassociatedwithchronicinflammation,s
Theroughguidetomarketingsuccessusedtobethatyougotwhatyoupaidfor.Nolonger.Whiletraditional"paid"media—sucha
Forthefirsttimeinhistorymorepeopleliveintownsthaninthecountry.InBritainthishashadacuriousresult.Whilepol
Thoughnotbiologicallyrelated,friendsareas"related"asfourthcousins,sharingabout1%ofgenes.Thatis【C1】______astudy
WithJapan’swelfaresystembucklingunderthedemandsofanageingsociety,theworld’soldestmanapologizedyesterdayforhis
Overthelastdecade,demandforthemostcommoncosmeticsurgeryprocedures,likebreastenlargementsandnosejobs,hasincrea
随机试题
氧气对于高等植物来说是________。
硫酸链霉素的检查项目有()
破产人所欠税款的清偿顺序在破产人所欠职工的工资和医疗、伤残补助、抚恤费用之前。()
银行业从业人员在业务活动中,为了赢得客户的信赖,可以向客户暗示规避外汇监管的规定。()
假设某欧式看涨期权目前股价为4.6元,期权的行权价为4.5元,期限为1年,股价年波动率为0.3,无风险利率为6%,则该看涨期权的价值为()元。(已知累积正态分布表N(0.42)=0.6628,N(0.12)=0.5478)
请认真阅读下列材料,并按要求作答。问题:简要分析歌曲的特点。
下列语句没有错误的是()。
小明家与学校相距6千米。每天小明都以一定的速度匀速骑自行车去学校,恰好在上课前5分钟赶到。这天,小明比平时晚出发了10分钟,于是他提速骑车,结果在上课前1分钟赶到了学校。已知小明提速后的速度是平时的1.5倍,那么小明平时骑车的速度是每小时多少千米?(
Industrialism,atleastwithinourexperienceofitformorethan200years,never【B1】______apointofequilibriumoralevel
TestshaveconfirmedthatfourpeopleinWisconsincontractedthemonkeypoxvirusaftercomingintoclosecontactwithpetprair
最新回复
(
0
)