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 behaviour agree that there is virtually an epidemic of sleepiness in the nati
Judging from recent surveys, most experts in sleep behaviour agree that there is virtually an epidemic of sleepiness in the nati
admin
2013-06-17
32
问题
Judging from recent surveys, most experts in sleep behaviour 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 crises 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, the 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 in 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 re call 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."
What does the word "subjects" (Line 1, Para. ) mean?
选项
A、Person or thing that is being discussed or described.
B、Branch of knowledge studied in a school.
C、Person or thing being treated in a certain way or being experimented on.
D、Any member of a State apart from the supreme ruler.
答案
C
解析
这句话的状语从句的意思是:确定睡眠不足的后果,而主句又提到心理和实际表现测试,由此可推知 subjects的意思应该与实验有关,而后面的现在分词短语更明确地说明了subjects所要做的事情:数字计算、背诵文章等,由此通过排除法可知选项C)“受实验者,受治疗者,临床医学研究的对象”为答案。根据requiring后面所表示的动作可知subjects应该是可以实施这些动作的施动者,即必须是人,所以排除A)和B);选项D)和实验没有关系。
转载请注明原文地址:https://jikaoti.com/ti/Y41FFFFM
0
大学英语四级
相关试题推荐
Manystudentsfindtheexperienceofattendinguniversitylecturestobeaconfusingandfrustratingexperience.Thelecturersp
ItisnotoftenrealizedthatwomenheldahighplaceinsouthernEuropeansocietiesinthe10thand11thcenturies.Asawife,
Thereisapopularbeliefamongparentsthatschoolsarenolongerinterestedinspelling.Thisis,however,a【1】.NoschoolIh
TipsforThoseWhoTravelAloneWhenitcomestotraveling,sometimestakingajourneyalonecanbegreat.Travelingalonea
A、$15.00.B、$15.40.C、$50.00.D、$50.14.B题日询问女士支付了多少利息。关键是要听到“repaysthe$5,000sheloaned,and$15.40interest”(支付了5000美元和15.40美
ImaginebeingaslaveinancientRome.Nowrememberbeingone.Thesecondtask,unlikethefirst,iscrazy.If,asI’mguessing,
Severalrecentstudieshavefoundthatbeingrandomly(随机地)assignedtoaroommateofanotherracecanleadtoincreasedtoleran
Youshouldwriteatleast120wordsfollowingtheoutlinegivenbelow:1.面对工作市场中的剧烈竞争,许多大学生选择去中国的西部体验义务教学2.大学生选择去西部义务教
Oneofthemostfamousandmosttalked-aboutactressestocomeoutofHollywoodhasdied.Film【B1】______ElizabethTaylordiedW
Oneofthemostfamousandmosttalked-aboutactressestocomeoutofHollywoodhasdied.Film【B1】______ElizabethTaylordiedW
随机试题
母亲现在的年龄个位数跟十位数对调再减10岁就是儿子的年龄。再过3年母亲的年龄就是儿子年龄的2倍。则母亲现在的年龄是:
下列各组中两个词都是补充式合成词的一组是()
认定《左传》的作者是左丘明的著名典籍有()。
既能化湿,又能行气的药物有()
在《劳动法》中规定了工会和个人对劳动过程中的监督权利。()依法维护劳动者的合法权益,对用人单位遵守劳动法律、法规的情况进行监督。
心理测量方法在培训和开发中的作用主要体现在()
社会主义市场经济的基本特征是()
将函数展开成x-2的幂级数。
Weoftentendtoassociatesmilingastheresultofapositiveeventormood.Butresearchdemonstratesthattheactofsmiling,
Peoplethinkingabouttheoriginoflanguageforthefirsttimeusuallyarriveattheconclusionthatitdevelopedgraduallyas
最新回复
(
0
)