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
27
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.even 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://kaotiyun.com/show/QHii777K
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
Allflights______becauseofthesnowstorm,manypassengerscoulddonothingbuttakethetrain.
Houseagent:Goodmorning.SunshineRealEstate.ChrisLeespeaking.Woman:______Isitstillavailable?
Thepassagefocuseson______.Byimmersingoreparticlesinwater,______.
Shopassistant:Goodmorning.CanIhelpyou?Customer:______.I’mjustlookinground.
Customer:Goodevening.Ibookedatablefor4underthenameHunt.Waiter:Justaminute.______
Americansbelievethateducationis______.Avarietyo{extracurricularactivitiesareaddedinAmericanschools______.
Evenplantscanrunafever,especiallywhenthey’reunderattackbyinsectsordisease.Butunlikehumans,plantscanhavethei
Lucia:Doyouhaveanytissue,Polly?Polly:Here.______Lucia:Thanks.Ihaveaterribleheadache.Itseemstobeflu.
Manypeoplearenotawarethatitisratherrudeto______.Theauthorsuggeststhat______.
Itis______heisdetermined.
随机试题
传统的公共物品理论认为,公共物品供给的资金提供者是()。
快意当前,适观而已矣。
腮腺炎的诊断主要依靠流行病学史,腮腺和(或)邻近腺体肿大,或伴有睾丸炎、卵巢炎、脑炎等症状作出临床诊断,而确诊或对非典型或亚临床型感染的诊断必须通过哪些检查
治疗目赤肿痛,除晴明、风池、太阳外,还应选取的主穴是()
利用世行贷款建设的公路项目只能执行世行规定的工作程序,而不能按我国公路工程基本建设程序办事。()
根据《担保法》,当事人对保证方式没有约定或者约定不明确的,()。
在艾里克森看来,成年早期(18~25岁)人格发展的主要任务是()。
每个人的经历都是一部书。有的像诗,跳跃灵动,含蓄隽永;有的像散文,形散神凝,耐人寻味;有的像小说,情节盘根错节,矛盾跌宕起伏;有的像戏剧,冲突不断,悬念丛生。有的人的经历如山间小溪,清澈见底;有的人的经历如大河奔流,波澜壮阔。有的人的经历像风雨后的彩虹,有
阿拉伯文化教育直接继承了古希腊、罗马文化,因此发展迅速。
Centralbankindependencehastodowithmonetarypolicy’seffectsintheshotrunandthelongrun.Intheshortrun,an"【21】"
最新回复
(
0
)