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
2019-06-10
37
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.
【C4】
选项
A、come up against
B、come down to
C、come up with
D、come up to
答案
C
解析
考查短语辨析。此处句意为“睡眠研究者们还______了其他令人惊讶的发现”。come up against指突然或意外碰到困难或反对等,come down to“归结为”,come up with“提出,拿出,发现”,come up to“比得上,达到”。根据意思,C.come up with符合题意,为正确答案。
转载请注明原文地址:https://www.kaotiyun.com/show/UvnZ777K
0
考研英语一
相关试题推荐
Organizationsandsocietiesrelyonfinesandrewardstoharnesspeople’sself-interestintheserviceofthecommongood.Thet
Organizationsandsocietiesrelyonfinesandrewardstoharnesspeople’sself-interestintheserviceofthecommongood.Thet
Themassmediaisabigpartofourculture,yetitcanalsobeahelper,adviserandteachertoouryounggeneration.Themass
Themassmediaisabigpartofourculture,yetitcanalsobeahelper,adviserandteachertoouryounggeneration.Themass
TheEarth’sdailyclock,measuredinasinglerevolution,istwenty-fourhours.Thehumanclock,【C1】______,isactuallyaboutt
TheEarth’sdailyclock,measuredinasinglerevolution,istwenty-fourhours.Thehumanclock,【C1】______,isactuallyaboutt
TheEarth’sdailyclock,measuredinasinglerevolution,istwenty-fourhours.Thehumanclock,【C1】______,isactuallyaboutt
TheEarth’sdailyclock,measuredinasinglerevolution,istwenty-fourhours.Thehumanclock,【C1】______,isactuallyaboutt
TheEarth’sdailyclock,measuredinasinglerevolution,istwenty-fourhours.Thehumanclock,【C1】______,isactuallyaboutt
随机试题
下列关于急腹症手术适应证的叙述中,最合适的一项是()
46岁女性患者。单位体检发现尿糖阳性前来就诊。其母患有糖尿病。本次检查结果:尿糖(-),尿蛋白(-),空腹血糖5.8mmol/L,肾功能正常,肝功能正常。下一步应该检查的项目是
预应力张拉时,如果出现千斤顶漏油严重、()时,应重新校验张拉设备。
背景新建机场飞行区指标为4E,跑道磁方向角为6°~186°。设计要求跑道道面须刻槽。为尽可能消除基层纵向施工缝,基层摊铺必须采用摊铺机作业,并不设找平层,需施工单位采取相应措施来防止道面面层发生反射裂缝。A施工单位中标承建了该跑道基层、面层和道面标志施工
按照海关对报关单上“运输方式”项目的分类规定,“其他运输”所指的运输方式有()。
下列各项中,不属于甲级政府采购代理机构应当具备的条件是()。
19世纪60、70年代,随着光学研究的发展,一个以表现“光”和“色”和谐统一的画派出现了,下列画家中是这一画派代表人物的是()。
打磨:石头:砂纸
简述债券价值和债券付息频率关系。
下列打开“代码窗口”的操作中错误的是
最新回复
(
0
)