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
17
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://jikaoti.com/ti/eYjFFFFM
0
大学英语四级
相关试题推荐
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendpeopletocollegesto【B1】______graduatingstudentsw
EarthHourisanannualglobalcampaignthatencouragespeopleandbusinessesaroundtheworldtoswitchoff【B1】______atthesa
EarthHourisanannualglobalcampaignthatencouragespeopleandbusinessesaroundtheworldtoswitchoff【B1】______atthesa
Aroundtheworld,thereareanumberofdifferenttraditionsthatformpartofthecultureandcanrepresenteithergoodorbad
A、Shequestionstheman’spurpose.B、Shedoesn’tlikeparties.C、Sheisfullyengaged.D、Shehasaninvitationalready.C男士建议聚会,
Facingapotentialclimatedisaster,theworld’sgovernmentsagreedtolimitaglobalrisein【B1】______temperaturebytheend
Youcantelltheageofatreeby【B1】______itsrings,buttheserecordsofatree’slifereallysayalotmore.Scientistsare
Juicemaybetasty,butit’snotreallythatnourishing.Whileorangejuiceisan【B1】_____sourceofvitaminC,itdoesn’tconta
A、Researchersshowgreatinterestinthis.B、Fewdriversknowthedangersofaccidents.C、Expertswanttowarndriversoftheir
I’musuallyfairlyskepticalaboutanyresearchthatconcludesthatpeopleareeitherhappierorunhappierormoreorlesscerta
随机试题
A.健脾养心,补益气血B.健脾养心,理气化痰C.行气开郁,化痰散结D.疏肝解郁,理气畅中E.清肝化痰,疏肝解郁郁证中,肝气郁结的常用治法是()。
某设计方案年产量为12万吨,已知每吨产品的销售价格为650元,每吨产品缴纳的税金为65元,单位可变成本为250元,年总固定成本为1500万元。则以单位产品可变成本表示的盈亏平衡点为()元/吨。
容易造成股利支付额与本期净利相脱节的股利分配政策是( )。
陶行知说:“教师必须具有健康的体魄,农人的身手,科学的头脑,艺术的兴味,改革社会的精神。”这体现了教师职业劳动的()。
近年来,全国各地相继启动了高考制度改革,新高考更注重考查学生的综合素质,内容主要包括思想品德、学业水平、身心健康、艺术素养、社会实践5个方面。但据调查,我国城乡教育发展不均衡,很多农村学校的素质教育无法到位,农村孩子在新高考综合素质测评中容易处于劣势地位。
文化体制改革重点任务基本完成,是2015年我国文化改革发展的目标之一。()
A.That’sright,John.B.Whyshouldwebelieveyouthistime?C.ButMrs.Faulkes,yousaidthatfiveyearsagowhenyouwerec
俗话说:“买卖不在仁义在”,请运用合同的基本原则和合同法的相关理论知识对其加以辨析。
某一市长曾建议向进城的私人车辆每天收取五美元的费用,宣称这种费用的征收将缓解该城市的交通拥挤状况。该市长解释说,由于该费用比许多附近站点乘坐环线公共汽车的费用要高,许多人会由自己驾驶汽车转为乘坐公共汽车。以下哪项陈述为证明该市长的推理是有缺陷的提供了最好的
The"paperlessoffice"hasearnedaproudplaceonlistsoftechnologicalpromisesthatdidnotcometopass.Surely,though,th
最新回复
(
0
)