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 tw
The Earth’s daily clock, measured in a single revolution, is twenty-four hours. The human clock,【B1】______, is actually about tw
admin
2017-08-31
63
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 a 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【B9】______only one certain finding: Sleep loss makes a person sleepy and that’s about all; it causes no lasting ill【B10】______. Too much sleep, however, may be【B11】______for you.
These findings【B12】______some long-held views of sleep, and they【B13】______questions about its fundamental purpose in our lives. In【B14】______, scientists don’t know just why sleep is necessary.
Some 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.
【B17】
选项
A、comfortable
B、calm
C、quiet
D、excited
答案
C
解析
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/C6IZ777K
0
考研英语一
相关试题推荐
Doctorshavetreatedthefirstreportedcaseof"Internetaddictiondisorder"broughtonbyexcessiveuseofGoogleGlass.I
Doctorshavetreatedthefirstreportedcaseof"Internetaddictiondisorder"broughtonbyexcessiveuseofGoogleGlass.I
Muchoftheworldshouldgoonadietin2014.Morethanathirdofadults【C1】______wereestimatedtobe【C2】______orobesein20
"AMZN"isafour-letterwordtomanybooksellers.Theonlineretailerhasbeen【C1】______ofkillingthebooksellingindustry.It
Consumersandproducersobviouslymakedecisionsthatmoldtheeconomy,butthereisathirdmajor【C1】______toconsider,therol
Writeanessaybasedonthefollowingchart.Inyourwriting,youshould1)interpretthechart,and2)giveyourcommen
Manyareawareofthetremendouswasteofenergyinourenvironment,butfailtotakeadvantageofstraightforwardopportunities
Manyareawareofthetremendouswasteofenergyinourenvironment,butfailtotakeadvantageofstraightforwardopportunities
Withincreasingprosperity,WesternEuropeanyouthishavingaflingthatiscreatingdistinctiveconsumerandculturalpatterns
Itusedtobesostraightforward(直接的).Ateamofresearchersworkingtogetherinthelaboratorywouldsubmittheresultsofthe
随机试题
某企业因不服工商局吊销其营业执照的处罚,向人民法院提起行政诉讼,并要求赔偿。据此,回答下列两个问题。若法院在行政诉讼中发现,行政机关在作出被诉行政行为时所依据的法律规定是合法的,但因政策或法律变化需要变更或废止,对此人民法院应作何种判决?___
某环保企业使用自有资金并购另一同行业企业,这种并购属于()。
中华人民共和国各级监察委员会是__________,是行使国家监察职能的专责机关。
男,50岁。因肾病综合征入院做肾活检,病理显示膜性肾病。治疗过程中突然出现双侧肾区疼痛,尿量减少,低热,蛋白尿显著增多伴肉眼血尿,下肢水肿加重,肾功能较前稍有减退。B超示双肾大小较前有所增大。此时最可能的原因是
朝向自由声场的洞口其吸声系数为()。
某大城市规划建设的高速公路,4车道,全长80km,设计行车速度80km/h,路基宽度24.5m。全程有互通式立交5处,跨河特大桥1座(1750m),大桥5座(共1640m),隧道4座(共3800m),其中单洞长隧道(2400m)。公路位于规划未建成区,起点
某港5万吨级航道疏浚工程长2km,采用1艘4500m13耙吸挖泥船施工。航道设计底标高一12.0m(当地理论深度基准面,下同),设计底宽150m,边坡1:5,计算超深0.5m,计算超宽5m,浚前平均高程一7.0m,疏浚土质为流动性淤泥和淤泥质土,疏浚土全部
人民法院受理了甲企业的破产案件,受理之前,甲企业与乙企业曾签订了一项买卖合同,甲向乙购买价值100万元的货物,但双方截至人民法院受理破产案件时仍未履行,管理人接管企业后,要求乙企业继续提供货物,甲由此需要支付的100万元属于()。
钱经理正在审阅借助Excel统计的产品销售情况,他希望能够同时查看这个千行千列的超大工作表的不同部分,最优的操作方法是()
HekeptinconstantcontactwithhisfamilywhilehewasinAustralia.
最新回复
(
0
)