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?【C1】______the physiological bases of the need for sleep remain conjectural (猜想), rendering con
How much sleep does a person need?【C1】______the physiological bases of the need for sleep remain conjectural (猜想), rendering con
admin
2012-07-23
151
问题
How much sleep does a person need?【C1】______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【C2】______from this evidence is【C3】______there is great variability among individuals in total sleep time. For adults, 【C4】______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【C5】______and reliable figures on sleep time, including those cited here, come from studies in sleep laboratories, where EEG criteria are employed.
【C6】______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, 【C7】______the sleep time drops sharply; by two years of age, it may【C8】______from nine to 12 hours. Decreases to approximately six hours have been observed among the elderly.
【C9】______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【C10】______in these sleep stages are as striking as age-related changes in total sleep time.
【C7】
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://www.kaotiyun.com/show/kBii777K
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
Thesoftwareisapopulartoolinbusiness,whereit______andsimplifiessuchproceduresasbudgeting.
Whatkindofpersonneedsthisservice?Howmuchwillitcostyouifyouwantfiveregularpapersandtwographstobetyped?
Thescienceofmedicine,______progresshasbeenveryrapidlately,isperhapsthemostimportantofallsciences.
Certainly,themostpopularmethodoftravelingusedbyAmericansistheprivatelyownedautomobile.ThevastmajorityofAmeric
Formostkindsofactivities,alargegroupofpeoplecanaccomplishmoreandhavemorefunthanonepersonalone.Forexample,
A、contractorganizationsB、realestatecompaniesC、individualpersonsD、specialconstructioncompaniesD广告第一栏说明的业务对象中提到了A,B,C,没有
Hewasapersonwhowouldstandupforwhathethoughtright,______.
Inthesamewaythatachildmustbeabletomovehisarmsandlegsbeforehecanlearntowalk,thechildmustphysiologically
A EmbassyVacationResorts California,FloridaandHawaiiAttheEmbassyVacationResorts,ourvac
随机试题
A.心房收缩期B.等容收缩期C.射血期D.等容舒张期E.充盈期动脉压最高点发生在
女性,60岁。上腹部疼痛4年,进食后加重。胃镜检查示胃小弯侧有颗粒状物,病理示重度不典型增生,HP(+)。治疗方案应选择
玉屏风散的君药是
药物配伍中,体现"补血而不滞血"者为药物配伍中,体现"和血而不伤血"者为
下列有关夹板门的描述,哪一项是错误的?()
改革是推动历史发展的重要动力,一个国家、一个民族要发展,就要不断改革创新,与时俱进。请完成以下关于改革的话题。材料一据《史记.商君列传》记载,商鞅合并小都、小乡、小邑、小聚为县,设置县令、县丞,共三十一个县,由国君直接委派官员治理;努力从事农业生产
将函数f(x)=1一x2(0≤x≤π)展开成余弦级数,并求级数的和.
将含100个结点的完全二叉树从根这一层开始,每层从左到右依次对结点编号,根结点的编号为1。编号为49的结点X的双亲编号为(39)。
NipponexElectrics
Inchoosingthetypeofcareeryouwilltakeuponleavinguniversityorcollege,I’msurethatmostofyouwillnotfinditstra
最新回复
(
0
)