首页
登录
职称英语
For millions of years before the appearance of the electric light, shift wor
For millions of years before the appearance of the electric light, shift wor
游客
2023-09-12
54
管理
问题
For millions of years before the appearance of the electric light, shift work, all night cable TV and the Internet, Earth’s creatures evolved on a planet with predictable and reassuring 24-hour rhythms. Our biological clocks are set for this daily cycle. Simply put, our bodies want to sleep at night and be awake during the day. Most women and men need between eight and eight and a half hours of sleep a night to function properly throughout their lives. (Contrary to popular belief, humans don’t need less sleep as they age.)
But on average, Americans sleep only about seven and a half hours per night, a marked drop from the nine hours day averaged in 1910. What’s worse, nearly one third of all Americans get less than six hours of sleep on a typical work night. For most people, that’s not nearly enough.
Finding ways to get more and better sleep can be a challenge. Scientists have identified more than 80 different sleep disorders. Some sleeping disorders are generic. But many problems are caused by staying up late and sleeping in, by traveling frequently between time zones or by working nights. Dr. James. F. Jones at National Jewish Medical and Research Center in Denver says that sleep disorders are often diagnosed as other discomforts. About one third of the patients who referred to him with possible chronic fatigue syndrome actually have treatable sleep disorders. "Before we do anything else, we look at their sleep," Jones says.
Sleep experts say that most people would benefit from a good look at their sleep patterns, "My motto (座右铭) is ’sleep defensively’," says Mary Carskadon of Brown University. She says people need to carve out sufficient time to sleep, even if it means giving up other things. Sleep routines—like going to bed and getting up at the same time every day—are important. Pre-bedtime activities also make a difference. As with Elsneer, who used to suffer from sleeplessness, a few lifestyle changes—avoiding stimulants and late meals, no exercising before bedtime, but relaxing with a hot bath—yield better sleep. [br] What is TRUE of human sleep?
选项
A、Most people need less sleep when grown older.
B、Most people need seven and a half hours of sleep every night.
C、On average, people in the US today sleep less per night than they used to.
D、Most people need more sleep when they are under pressure.
答案
C
解析
事实细节题。根据第一段最后一句可知A项说法错误;根据第二段第一句可知C项正确,B项内容是对此句的曲解;D项内容文章中没有提到。
转载请注明原文地址:https://tihaiku.com/zcyy/3007851.html
相关试题推荐
Hadtheyboughtthehousebeforethewar,______(他们现在可以以于原来十倍的的价格将其出售).theycou
Themillionsofcalculationsinvolved,hadtheybeendonebyhand,_____________
SinceIboughtacomputerlastmonth,anewworldhasopenedupbeforeme,
SinceIboughtacomputerlastmonth,anewworldhasopenedupbeforeme,
SinceIboughtacomputerlastmonth,anewworldhasopenedupbeforeme,
SinceIboughtacomputerlastmonth,anewworldhasopenedupbeforeme,
SinceIboughtacomputerlastmonth,anewworldhasopenedupbeforeme,
InNovember1965,NewYorkwasblackedoutbyanelectricityfailure.The【B
InNovember1965,NewYorkwasblackedoutbyanelectricityfailure.The【B
InNovember1965,NewYorkwasblackedoutbyanelectricityfailure.The【B
随机试题
You______talksoloudinthelibrary.A、needn’tB、maynotC、mustn’tC图书馆里是禁止喧哗的
BythetimeyouarriveinLondon,we______inEuropefortwoweeks.A、shallstay
WhyBilingualEducation?Bilingualeducat
InliteratureastoryinverseorprosewithadoublemeaningisdefinedasA、all
TheImportanceofDailyExerciseAresearchsuggeststhatjust15minute
以下涎腺肿瘤最易发生种植复发的肿瘤是() A.肌上皮瘤 B.嗜酸
A.产后小腹疼痛拒按,或灼热疼痛,恶露量少或多,色紫黯如败酱,其气秽臭 B.停
症见右少腹疼痛拒按,按之其痛如淋,甚则局部肿痞,或右足屈而不伸,伸则痛剧,小便自
肝性脑病的护理措施中,最重要的环节是()。A.加强安全措施 B.去除和避免一切
某海船满载排水量为30000吨,空船排水量为8000吨,航速为16海里/小时,船
最新回复
(
0
)