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 of sleepiness in the natio
Judging from recent surveys, most experts in sleep behavior agree that there is virtually an epidemic of sleepiness in the natio
admin
2011-03-01
20
问题
Judging from recent surveys, most experts in sleep behavior agree that there is virtually an epidemic 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 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 8 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, 8 hours or even more to feel ideally vigorous."
Perhaps the most merciless rubber of sleep, researchers say, is the complexity of the day. When ever 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 he concluded from the passage that one should sleep as many hours as 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
分析推理题。文章一直在分析现代美国人睡眠不足的原因及由此引发的一些问题如精力不充沛、表现不好、记忆力削弱、作出决定的能力和注意力减弱等,通过专家的话与例子,表达出了要读者注意保持睡眠充足的观点。所以保持睡眠充足的目的当然是为了保持充沛的精力、提高日常工作效率等,选 [D] 。也可。由常识判定答案。
转载请注明原文地址:https://kaotiyun.com/show/o6jd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
AretheBritishpeopleEuropeans?ThismayseemastrangequestiontoAfricansandAsians,whotendtothinkofallwhitemenas
Whendidtheconversationtakeplace?
Rendthetextsfromamagazinearticleinwhichfivepeoplegavetheiropinionsonworkandfamily.ForQuestions61to65,m
Accordingtothespeaker,whataretheproblemsrelatedtobehaviorism?
Inrecentyears,moreandmoreforeignersareinvolvedintheteachingprogramsoftheUnitedStates.Boththeadvantagesandth
Inrecentyears,moreandmoreforeignersareinvolvedintheteachingprogramsoftheUnitedStates.Boththeadvantagesandth
CustomsofficersataLondonairportyesterdayfound$500,000worthofdrugswhichwerebeingsmuggled(走私)intoBritaininboxes
CustomsofficersataLondonairportyesterdayfound$500,000worthofdrugswhichwerebeingsmuggled(走私)intoBritaininboxes
CustomsofficersataLondonairportyesterdayfound$500,000worthofdrugswhichwerebeingsmuggled(走私)intoBritaininboxes
随机试题
低合金钢焊条型号的编制方法与碳钢焊条不同。
在为产品线定价时须考虑各产品项目之间相互影响的程度,如果需求的交叉弹性为正值,则此两项产品为
关于书写护理病历的意义,下列哪项不准确
根据《劳动法》,施工企业应按规定向劳动者支付工资,但是当企业因暂时生产经营困难无法按规定支付工资时可以延期支付,但最长不得超过()日。
企业所属各施工单位为组织和管理施工活动而发生的管理人员工资及福利费应计入()。
被称为第三代货币的货币形态是()。
阅读下面的材料,根据要求写一篇议论文。教育家苏霍姆林斯基曾说过,教育的理想就在于使所有儿童都成为幸福的人。幸福是现代教育的终极价值,“有灵魂的教育”不仅要将孩子培养成为有用之人,而且应教他们追求幸福,将他们培育成幸福之人。要求
人受伤后,如果伤口范围较大或损伤较严重,那么伤口在康复的过程中,尤其是最后结痂时,会有很痒的感觉。产生痒的感觉的原因是()。
HumanmaleslivingwiththeirmomsmaynotexpecttohavemuchluckhookingupthisValentine’sDay.【C1】______amongthenorthern
在考生文件夹下,打开商品销售数据库cdb,完成如下简单应用:(1)使用一对多报表向导建立名称为p_order的报表。要求从父表顾客表cust中选择所有字段,从子表订单表order中选择所有字段;两表之间采用“顾客号”字段连接;按“顾客号”字段升序
最新回复
(
0
)