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
91
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、how
B、what
C、whether
D、that
答案
D
解析
本题的考点是表语从句引导词,后面there-be从句语义完整,无须任何添加,故选择一个起语法作用的引导词that即可。
转载请注明原文地址:https://kaotiyun.com/show/9vYi777K
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
下列选项中,属于明朝首创的有()。
Corruptionintherunningofthecity’slargestbankwas______inPeople’sDailyyesterday.
Besidesactiveforeignenterprisesanda【B1】numberofprivateemployers,aconsequentialnewdevelopmentwasthedevelopmentof
AmyJohnsonwasapioneerairwomaninBritain.ShewasbornonJuly1,1903,inYorkshireandlivedthereuntil1923whenshewe
Thebesttitleforthepassageis______.Ifapersonislateforbusinessmeeting,hemay______.
Fromthepassage,weknowtheorganizationsmentionedabovemainlyworkfor______.Ifyoulikechildrenandyoucouldofferah
HowistheimageofthenorthpolarcapofMars?WhenweretheimagesofMarstaken?
Sciencetextbooksandtechnicalandprofessionaljournalsareusuallymadeupofseveralpartsandcontainvariousspecialfeatu
Astheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair
Somepsychologistsmaintainthatmentalactssuchasthinkingarenotperformedinthebrainalone,butthatone’smusclesalso
随机试题
Didyoueverhavesomeone’snameonthetipofyourtongueandyetyouwereunabletorecallit?【C1】______thishappensagain,do
如图所示正方形截面对z1轴的惯性矩与对z轴惯性矩的关系是:
某超市位于居民区内,该居民区人口密集。某晚19时22分,该超市发生火灾,经过3个小时的扑救,将火扑灭。这起火灾事故造成2人死亡,9人重伤,直接经济损失260万元。根据《生产安全事故报告和调查处理条例》(国务院令第493号),这起事故等级属于(
利须商贸公司于2007年3月2日办理了工商登记并领取了营业执照,会计张某于当月办理了税务登记并领取了税务登记证,随即在注册地银行开立了基本存款账户。5月4日该公司出纳签发了一张支票,但未在支票上注明收款人姓名和金额;6月公司聘用了一位退休老会计担任出纳,他
下列各项,应通过“固定资产清理”科日核算的有()。
村集体经济组织本年实现的收益总额指的是()。
伤亡事故报告和处理制度的内容,包括()
根据以下资料,回答下列问题。2017年,A省完成邮电业务总量6065.71亿元。其中,电信业务总量3575.86亿元,同比增长75.8%;邮政业务总量2489.85亿元,增长32.0%。2017年,A省移动电话期末用户1.48亿户,比上
向量组α1,α2,…,αm线性无关的充分必要条件是().
A、Becauseeveryengineermustworkwiththesesciences.B、Becauseeveryengineerknowsalotofthem.C、Becausethetwosciences
最新回复
(
0
)