首页
登录
职称英语
Judging from recent surveys, most experts in sleep behavior agree that there
Judging from recent surveys, most experts in sleep behavior agree that there
游客
2024-05-15
3
管理
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 properly 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, the 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 ok because they can get by on 6.5 hours, when they really need 7.5, 8 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 program. "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." [br] The word "subjects" (first sentence, last paragraph) refers to ______.
选项
A、the performance tests used in the study of sleep deficit
B、special branches of knowledge that are being studied
C、people whose behaviors or reactions are being studied
D、the psychological consequences of sleep deficit
答案
C
解析
细节题。根据上下文,第四段中subjects应指“被试”,这里即接受睡眠试验的对象。
转载请注明原文地址:https://tihaiku.com/zcyy/3600035.html
相关试题推荐
Inrecentdecades,franchising(专卖店)hasgrownincreasinglypopularandwide
Inrecentdecades,franchising(专卖店)hasgrownincreasinglypopularandwide
Inrecentdecades,franchising(专卖店)hasgrownincreasinglypopularandwide
Inrecentdecades,franchising(专卖店)hasgrownincreasinglypopularandwide
Inrecentdecades,franchising(专卖店)hasgrownincreasinglypopularandwide
Inrecentdecades,franchising(专卖店)hasgrownincreasinglypopularandwide
ArecentpollindicatedthathalftheteenagersintheUnitedStatesbelieve
ArecentpollindicatedthathalftheteenagersintheUnitedStatesbelieve
ArecentpollindicatedthathalftheteenagersintheUnitedStatesbelieve
ArecentpollindicatedthathalftheteenagersintheUnitedStatesbelieve
随机试题
DoBritain’sEnergyFirmsServethePublicInterest?[A]Capitalismistheb
如果投资者(),可以考虑利用股指期货进行空头套保值。A、计划在未来持有股票组合,担心股市上涨B、持有股票组合,预计股市上涨C、计划在未来持有股票组合
自燃点是衡量可燃物受热升温形成自燃危险性的依据,可燃物的自燃点越高,发生火灾的危
在水处理初期,水中主要的原生动物种类是( )A.纤毛虫 B.钟虫
有机磷农药中毒的机制是A.抑制磷酸二酯酶 B.抑制单胺氧化酶 C.抑制胆碱酯
国家对水工程建设移民实行开发性移民方针的原则是()。A.专业规划与区域规划相结
根据《测绘地理信息业务档案管理规定》,国家重大测绘地理信息项目业务档案验收的组织
邓小平理论是 A.马克思主义与当代中国实际相结合的产物 B.马克思主义与时代
()对金融机构的一般事务及会计事务进行监督,是商业银行的监督机构,对股东大会负责
下列属于影响市场利率因素中的经济因素的是()。A.货币政策 B.经济周期
最新回复
(
0
)