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] People in the 18th and 19th centuries used to sleep about 5 hours a night because they had ______.
选项
A、no drive and ambition
B、no electric lighting
C、the best sleep habits
D、nothing to do in the evening
答案
B
解析
细节题。根据第二段第三句,18到19世纪人们平均大约睡9.5小时,当时在农场晚上无事可做,而无事可做的原因是“it was dark”,即没有电灯。
转载请注明原文地址:https://tihaiku.com/zcyy/3600032.html
相关试题推荐
[originaltext]M:Dr.White,we’verecentlylearnedthatapieceoftheLarsenI
[originaltext]M:Dr.White,we’verecentlylearnedthatapieceoftheLarsenI
AccordingtothemostrecentAmericanFreshmansurvey,conductedannuallyby
AccordingtothemostrecentAmericanFreshmansurvey,conductedannuallyby
AccordingtothemostrecentAmericanFreshmansurvey,conductedannuallyby
AccordingtothemostrecentAmericanFreshmansurvey,conductedannuallyby
AccordingtothemostrecentAmericanFreshmansurvey,conductedannuallyby
Inrecentdecades,franchising(专卖店)hasgrownincreasinglypopularandwide
Inrecentdecades,franchising(专卖店)hasgrownincreasinglypopularandwide
Inrecentdecades,franchising(专卖店)hasgrownincreasinglypopularandwide
随机试题
Withsmartphonestakingtheworldbystorm,aphonethatcanonlysendandr
颌骨的血供主要来自于() A.甲状腺上动脉 B.颞浅动脉 C.
黑膏药制备过程中没涉及到的操作为() A去火毒 B炼油 C下丹收膏 D
房地产经纪机构与委托人签订的房地产经纪服务合同的类型,应当根据( )确定。A.
关于药物在眼部的吸收的叙述正确的是A.药物眼吸收只能通过巩膜吸收B.滴眼剂的表面
应用型学习适合的培训方法是()等。A.案例教学 B.角色扮演 C.团队演习
对于看跌期权而言,执行价格越高,买方盈利的可能性越大,期权价格越高。()
A.乌梅与阿司匹林 B.乌贝散与头孢拉定 C.石膏与四环素 D.麻黄与呋喃
(2017年真题)与股权筹资方式相比,下列各项中,属于债务筹资方式优点的有()
根据《公路建设市场信用信息管理办法》,下列说法正确的是( )。A.自有设备的基本
最新回复
(
0
)