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
外语
Judging from recent surveys, most experts in sleep behavior agree that there is virtually an epidemic (流行病) of sleepiness in the
Judging from recent surveys, most experts in sleep behavior agree that there is virtually an epidemic (流行病) of sleepiness in the
admin
2017-08-23
19
问题
Judging from recent surveys, most experts in sleep behavior agree that there is virtually an epidemic (流行病) of sleepiness in the nation. "I can’t think of a single study that hasn’t found Americans getting less sleep than they ought to," says Dr. David. Even people who think they are sleeping enough would probably be better off with more rest.
The beginning of our sleep-deficit (睡眠不足) crisis can be traced to the invention of the light bulb a century ago. From diary entries and other personal accounts from the 18th and 19th centuries, sleep scientists have reached the conclusion that the average person used to sleep about 9. 5 hours a night. "The best sleep habits once were forced on us, when we had nothing to do in the evening down on the farm, and it was dark. " By the 1950s and 1960s, that sleep schedule had been reduced dramatically, to between 7. 5 and eight hours, and most people had to wake to an alarm clock. "People cheat on their sleep, and they don’t even realize they’re doing it," says Dr. David. "They think they’re okay because they can get by on 6. 5 hours, when they really need 7.5, eight or even more to feel ideally vigorous."
Perhaps the most merciless robber of sleep, researchers say, is the complexity of the day. Whenever pressures from work, family, friends and community mount, many people consider sleep the least expensive item on his programme. "In our society, you’re considered dynamic if you say you only need 5. 5 hours’ sleep. If you’ve got to get 8. 5 hours, people think you lack drive and ambition."
To determine the consequences of sleep deficit, researchers have put subjects through a set of psychological and performance tests requiring them, for instance, to add columns of numbers or recall a passage read to them only minutes earlier. "We’ve found that if you’re in sleep deficit, performance suffers," says Dr. David. "Short-term memory is weakened, as are abilities to make decisions and to concentrate."
It can be concluded from the passage that one should sleep as many hours as is necessary to_________.
选项
A、improve one’s memory dramatically
B、be considered dynamic by other people
C、maintain one’s daily schedule
D、feel energetic and perform adequately
答案
D
解析
由题干中“one should sleep as many hours as is necessary to”可以定位到文中最后一段的最后两句话。这两句话分别提到睡眠不足表现会很糟糕;短时记忆力会变弱,做决定和集中注意力的能力也会减弱。由此可知睡眠充足会精力充沛、表现好。
转载请注明原文地址:https://kaotiyun.com/show/zOi7777K
0
大学英语四级
相关试题推荐
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendpeopletocollegesto【B1】______graduatingstudentsw
EarthHourisanannualglobalcampaignthatencouragespeopleandbusinessesaroundtheworldtoswitchoff【B1】______atthesa
EarthHourisanannualglobalcampaignthatencouragespeopleandbusinessesaroundtheworldtoswitchoff【B1】______atthesa
Youcantelltheageofatreeby【B1】______itsrings,buttheserecordsofatree’slifereallysayalotmore.Scientistsare
Juicemaybetasty,butit’snotreallythatnourishing.Whileorangejuiceisan【B1】_____sourceofvitaminC,itdoesn’tconta
A、Manycountriesdislikeit.B、Allcountriesobserveit.C、ItbeganwiththeAmericans.D、ItbeganwiththeRomans.D短文提到,在元月一日庆
A、Studentsandhousewives.B、Athletesandtrainers.C、Youngpeopleandbusypeople.D、Singersandteachers.C短文中提到,这些饮料通常瞄准的消费者是
A、Researchersshowgreatinterestinthis.B、Fewdriversknowthedangersofaccidents.C、Expertswanttowarndriversoftheir
HowAdvertisementIsDone?A)Whenwechooseawordwedomorethangiveinformation;wealsoexpressourfeelingsaboutwha
I’musuallyfairlyskepticalaboutanyresearchthatconcludesthatpeopleareeitherhappierorunhappierormoreorlesscerta
随机试题
下列关于长时程增强的描述,正确的是
患者男,65岁。高热,咳嗽,口腔溃疡1周,体温39.4℃,下肢皮肤有大片淤斑,血红蛋白90g/L,白细胞13×109/L,中性粒细胞0.87,淋巴细胞0.22,未见幼稚细胞,PLT35×109/L,凝血酶原时间19秒(对照12秒),血浆鱼精蛋白副凝固试验阳
银翘散治疗口疮的证候是
不宜采用超滤膜滤过的药液是
下述几组物品中,限制进出境的是()。
“湖北有座黄鹤楼,半截插在云里头。”这种修辞手法是夸张。()
建立新型劳动就业体制的核心是()。
(2012年国家.41)说话不仅是一种生理功能,更是一种能力。会说话的人,纵然__________,滔滔不绝,听者也不以为苦,纵然__________,一字千金,也能绕梁三日。成功人十大多是成功的说话者,毫不夸张地说,其成功至少有一半是用舌头______
Theshygirlfeltquite______anduncomfortablewhenshecouldnotanswertheinterviewer’squestion.
Whoisthewoman?
最新回复
(
0
)