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
106
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
Sevenyearsago,agroupoffemalescientistsattheMassachusettsInstituteofTechnologyproducedapieceofresearchwhichsh
Youshouldassume,intryingforjobs,thatyouwillnotbetheonlyapplicant.Thesinglemostprevalentdecidingfactoristhe
Youshouldassume,intryingforjobs,thatyouwillnotbetheonlyapplicant.Thesinglemostprevalentdecidingfactoristhe
Youshouldassume,intryingforjobs,thatyouwillnotbetheonlyapplicant.Thesinglemostprevalentdecidingfactoristhe
Ifyouintendusinghumorinyourtalktomakepeoplesmile,youmustknowhowtoidentifysharedexperiencesandproblems.Your
Howbesttosolvethepollutionproblemsofacitysunksodeepwithinsulfurouscloudsthatitwasdescribedashellonearth?
WilltheEuropeanUnionmakeit?Thequestionwouldhavesoundedstrangenotlongago.Noweventheproject’sgreatestcheerlead
WilltheEuropeanUnionmakeit?Thequestionwouldhavesoundedstrangenotlongago.Noweventheproject’sgreatestcheerlead
随机试题
某女,22岁,腕、踝关节疼痛及脱发1年余,今晨郊游时发现面部出现紫红斑,遂就医。查体:头发稀疏,面颊及颈部均有不规则圆形红斑,口腔有溃疡。化验:血中查出狼疮细胞。病人返家后健康指导以下哪项不妥()
某男性,66岁,近日出现喘息、咳嗽、胸闷等症状,夜间及凌晨发作加重,呼吸较困难,并伴有哮鸣音。根据病情表现,该患者可能患有
张甲有两子张乙和张丙,因张乙和张丙在国外工作,无暇顾及张甲。张甲便与刘某签订一份遗赠扶养协议,将自己的房屋在死后赠与刘某,刘某尽生养死葬的义务。张甲在病危期间,张乙回到国内,张甲在临终前立下口头遗嘱,将其房屋由张乙继承(遗嘱符合形式要件)。张甲死亡后,王某
银行业监督管理机构的职责包括:()
关于单利和复利的区别,下列说法正确的是()。
以下哪种为社交礼仪中正确的介绍方式?()
职业是指劳动者为获得劳动报酬或收入所从事的社会劳动类别。职业具有哪些特征()。
公民年满16周岁并以自己的劳动收入为主要生活来源的,可以视为()。
CiscoPIX525防火墙可以进行操作系统映像更新的访问模式是()。
ThanksgivingDayisthemosttrulyAmericanofthenationalholidaysintheUnitedStatesandismostcloselyconnectedwiththe
最新回复
(
0
)