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
2023-09-04
47
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/2983766.html
相关试题推荐
Experts_______thatthissortofanimalwill"notattackahumanbeingunlessit
________humanbehaviormaybecausedbyeatingsubstancesthatupsetthedelica
Recentchangesinclimatemay______thatglobalwarmingisstartingtohavean
Humanbehaviorismostlyaproductoflearning,whereasthebehaviorofananima
RecentlytheonlineencyclopediaWikipediacelebratedits10thbirthday.Man
RecentlytheonlineencyclopediaWikipediacelebratedits10thbirthday.Man
RecentlytheonlineencyclopediaWikipediacelebratedits10thbirthday.Man
RecentlytheonlineencyclopediaWikipediacelebratedits10thbirthday.Man
RecentlytheonlineencyclopediaWikipediacelebratedits10thbirthday.Man
RecentlytheonlineencyclopediaWikipediacelebratedits10thbirthday.Man
随机试题
Undernocircumstances______withoutlookingcarefullytotherear.A、shouldoneb
Thesubjectofthislectureishorology,thescienceofmeasuringtime.The【
Thespatialdistributionofdifferentracialandethnicpopulations
科技档案是科技成果转化为生产力的中介和条件。()
标准项目由市住房和城乡建设委组织制定,由市质监局统一编号,市质监局和市住房和城乡
中国证券业协会的职责包括()。 Ⅰ.教育和组织会员遵守法律法规 Ⅱ.依法维
一位护士在与患者的交谈中,希望了解更多患者对其疾病的真实感受和治疗的看法。最适合
乙药品批准文号为国药准字Z20090010,其中Z表示A.化学药品 B.进口药
关于增值税制中的金融服务的说法,错误的是()。A.适用6%税率 B.金融
(2021年真题)除国家对采用高新技术成果有特别规定外,固定资产投资项目资本金中
最新回复
(
0
)