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
11
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://jikaoti.com/ti/N9b7FFFM
0
考研英语一
相关试题推荐
"Isitavitalinterestofthestatetohavemoreanthropologists?"RickScott,theFloridagovernor,onceasked.Aleaderofa
"Isitavitalinterestofthestatetohavemoreanthropologists?"RickScott,theFloridagovernor,onceasked.Aleaderofa
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
随机试题
以下属于学科中心课程的是()。
Alaska,whichwascalledRussianAmericabeforeitwassoldtoU.S.A.,joinedtheunionastheforty-ninthstatein1959.
何谓意识模糊?
A.浮而无力B.沉而有力C.迟而有力D.迟而无力E.浮而有力
在下列影响饮水氯化消毒效果的因素中,错误的是( )
患者,男,50岁。慢性肾炎病史6年。现浮肿明显,下肢尤甚,面色咣白,畏寒肢冷,腰膝酸软。神疲纳呆,阳萎,舌嫩淡胖有齿痕,脉沉细。检查:尿成规示:蛋白(+++),镜检可见颗粒管型。治宜
关于带状疱疹治疗,说法错误的是()。
【均输】河北师范大学2013年中国史真题;河南师范大学2015年中国通史真题;厦门大学2016年历史学基础真题
社会主义市场经济具有的一般市场经济的共性主要表现在
GlobalizationisanewinternationalsystemthathasreplacedtheColdWarsystem.However,unlesstheworldweremadeofjust【M
最新回复
(
0
)