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
How much sleep does a person need?【31】the physiological bases of the need for sleep remain conjectural (猜想), rendering conclusiv
How much sleep does a person need?【31】the physiological bases of the need for sleep remain conjectural (猜想), rendering conclusiv
admin
2011-01-17
39
问题
How much sleep does a person need?【31】the physiological bases of the need for sleep remain conjectural (猜想), rendering conclusive answers to this question impossible, much evidence has been gathered on how much sleep people do in fact obtain. Perhaps the most important conclusion to be【32】from this evidence is【33】there is great variability among individuals in total sleep time. For adults,【34】between six and nine hours of sleep as a nightly average is not unusual, and 7.5 hours probably best expresses the norm. Such norms, of course, forms inevitably vary with the criteria of sleep employed, The most【35】and reliable figures on sleep time, including those cited here, come from studies in sleep laboratories, where EEG criteria are employed.
【36】consistently has been associated with the varying amount, quality, and pattern of electrophysiologically defined sleep. The newborn infant may spend an average of about 16 hours of each 24-hour period in sleep,【37】the sleep time drops sharply; by two years of age, it may【38】from nine to 12 hours. Decreases to approximately six hours have been observed among the elderly.
【39】will be discussed from below, EEG sleep studies have indicated that sleep can be considered to consist of several different stages. Developmental changes in the relative proportion of sleep time【40】in these sleep stages are as striking as age-related changes in total sleep time.
选项
A、unless
B、however
C、although
D、even if
答案
C
解析
本题空白前半句说婴儿每天要用大量的时间睡眠,后面却说睡眠时间急剧减少,显然这里需要一个表示让步关系的连词。A.unless表示条件;B.however表示转折,但是副词;D.ever if表示假设;C.although表示让步关系,符合要求。
转载请注明原文地址:https://jikaoti.com/ti/k9pjFFFM
本试题收录于:
GCT工程硕士(英语)题库专业硕士分类
0
GCT工程硕士(英语)
专业硕士
相关试题推荐
Onafour-daytriptoEthiopia,Ihadadream.Inmydream,Isawtwomen,oneolderandoneyounger,facingoneanotheragainst
Thenewlyreleasedmoviewas______astoarousesomuchsensationamongtheyoungpeople.
Accordingtotheauthor,abachelorresistsmarriagechieflybecause______.Raisingchildren,intheauthor’sopinion,is____
WhichofthefollowingisNOTmentionedbytheauthorasaconsequenceofnewtechnologicaldevelopments?Whichofthefollowin
Couldthebadolddaysofeconomicdeclinebeabouttoreturn?SinceOPECagreedtosupply-cutsinMarch,thepriceofcrudeoil
Itmightbesupposedthatgreaterefficiencycouldbeachievedifseveralpeopleworkedtogethertosolveaproblemthanifonly
Nancy:Hello,Ted.What’swrongwithyourarm?Ted:IbrokeitwhenIwasskatingontheholiday.Nancy:Oh,no!______.Ted:Mu
NASAisreleasingseveralimagestakenbytheHubbleSpaceTelescope,whichistheclosestyetlookattheredplanet.Altogethe
INTHEGROUNDSOFAREGENCYMANSIONLuxurySelf-cateringHolidayCottagesintheheartoftheDevonshirecountryside.In
Althoughmanypeopleviewconflictasbad,conflictissometimesuseful______itforcespeopletotesttherelativemeritsoft
随机试题
关于DSA与传统心血管造影相比具有的优势,不正确的是
噎膈用药在饮食上应忌
下列案件中,适用民事诉讼法审理的有:()
今有化学反应A+B=C+D,下列说法正确的是()。
我国的会计师事务所实行()。
智力的高低反映了()的状况
毛泽东思想科学体系包含着丰富的内容。除新民主主义革命理论、社会主义革命和社会主义建设理论、革命军队建设和军事战略的理论、政策和策略的理论外,还有
Cellphoneusehasexplodedinmanycountries,easingcommunicationbetweenindividualsbutcausingsocialmalaiseaswell.Int
关于分布式数据库,下列说法错误的是______。
假定有以下两个过程:Subs1(ByValxAsInteger,ByValyAsInteger)DimtAsIntegert=xx=yy=tEndSubSubS2
最新回复
(
0
)