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
2013-04-11
55
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、extend
B、range
C、alter
D、rise
答案
B
解析
本题需要注意动词词义区别。A.extend,B.range,C.alter,D.rise分别表示“延伸”,“在……范围内变化”,“改变”和“上升”。本题相关部分要表达的是“从9到12个小时变化”,故选择B.range。
转载请注明原文地址:https://kaotiyun.com/show/hHii777K
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
Thereseemsnevertohavebeenacivilizationwithouttoys,butwhenandhowtheydevelopedisunknown.Theyprobablycameabout
Whichofthefollowingisthemainpurposeofthisannouncement?Timesformoviesandconcertsarenotlistedinthisannouncem
AccordingtoMcWhorter,thedeclineofformalEnglish______.Theword"talking"(Line5,Paragraph2)denotes
Thestatement"ThebusinessofAmericaisbusiness"probablymeans"______".Itcanbeinferredfromthepassagethattheautho
PromptnessisimportantinAmericanbusiness,academic,andsocialsettings.Theimportanceofpunctualityistaughttoyoungch
_____thatSusanhadn’tdaredtomakeasound.
Ann:Doyoustillhaveaheadache,Bill?Bill:Yes.Ido.AndnowIhaveafeverandcoughconstantly.Ann:______
Youdon’thavetobeinsuchahurry,Iwouldratheryou______onbusinessfirst.
Howdidthemotherdolphintalkwithherbabyoverthetelephone?Whenscientistsdescribedolphins’communicativeskills,thei
Astheplanecircledovertheairport,everyonesensedthatsomethingwaswrong.Theplanewasmovingunsteadilythroughtheair
随机试题
Faulkneroncesaidthat______isastoryof"lostinnocence,"whichprovesitselftobeanintensificationofthethemeofimp
普列姆昌德长篇小说《戈丹》的主人公何利是
初级产品和中间产品的消费市场是
急性胰腺炎的治疗原则为减轻腹痛、_______、_______。
债券市场价格越_______债券面值,期限越_________,则当期收益率就越偏离到期收益率。()[2015年9、12月真题]
数学认知不包含哪项内容?()
下列关于农业的说法正确的是:
下列最易致低钾血症的是
求下列极限:
Modernindustrialsocietygrantslittlestatustooldpeople.Infact,suchasocietyhasasystemofbuilt-inobsolescence.The
最新回复
(
0
)