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
20
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.
【C17】
选项
A、comfortable
B、calm
C、quiet
D、excited
答案
C
解析
本题考查形容词辨析。此处句意为“睡觉让他们保持______、躲开食肉动物;这是一条生存策略”。根据常识可知,睡眠时,动物是安静的。故C.quiet符合题意,为正确答案。首先可以排除excited,因为根据上下文和常识,睡眠不可能使动物兴奋、激动。comfortable“舒服的”,calm“冷静的”,均不及C项合适,故排除。
转载请注明原文地址:https://kaotiyun.com/show/nHnZ777K
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
Itusedtobesostraightforward(直接的).Ateamofresearchersworkingtogetherinthelaboratorywouldsubmittheresultsofthe
Howbesttosolvethepollutionproblemsofacitysunksodeepwithinsulfurouscloudsthatitwasdescribedashellonearth?
MuchofcontinentalEuropeisinpoorshape.True,theaggregatewealthofpeopleislittlechangedandthesocialcapitalinmu
WilltheEuropeanUnionmakeit?Thequestionwouldhavesoundedstrangenotlongago.Noweventheproject’sgreatestcheerlead
随机试题
阻断气道平滑肌上M胆碱受体,使气道平滑肌松弛,气道扩张的药物是()激动β2受体,激活腺苷酸环化酶使细胞内的环酸腺苷(CAMP)含量增加,游离Ca2+减少,使支气管平滑肌舒张的药物是()
若级数un收敛,则下列级数中收敛的是()
患者,男,52岁,呕血、黑便l天,查体:体温37.5℃,脉搏120次/分,呼吸24次/分,血压80/60mmHg,面色苍白,双肺无异常,心率120次/分,律齐,腹平软,剑突下压痛,肝脾未扪及,肠鸣音8次/分。问题3:处理错误的是
工序施工条件控制,是指对工序施工活动的()质量进行有效控制。
经济实践证明,市场机制是资源配置的有效手段,但是如果完全没有政府干预,将出现()。
警察产生的条件有( )。
——是关于客观事物最原始的心理信息,属于人的认识过程的最初级阶段。
唐律规定了司法官的审判回避制度,称为()
材料11949年3月23日上午,毛泽东等中央领导乘车从西柏坡前往北平。在路上,毛泽东兴奋地对周恩来说:“今天是进京‘赶考’的日子,进京‘赶考’去”。周恩来笑着回答:“我们应当都能考试及格,不要退回来。”毛泽东说:“退回来就失败了。我们决不当李自成,我们都
MostAmericanswon’tbetreatedespeciallyrespectfulbecauseoftheirageorsocialrank,theywillfeel______.Bycomparison
最新回复
(
0
)