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
As the school year kicks off, parents are once again struggling to cajole (哄骗) and, if need be, drag their exhausted teens out o
As the school year kicks off, parents are once again struggling to cajole (哄骗) and, if need be, drag their exhausted teens out o
admin
2018-09-25
21
问题
As the school year kicks off, parents are once again struggling to cajole (哄骗) and, if need be, drag their exhausted teens out of bed. That image may make you laugh, but lack of sleep is no joke. (77)
Teenagers who don’t get enough rest have more learning, health, behavior and mood problems than students who get at least nine hours a night.
Long-term lack of sleep is tied to heart disease, overweight, depression and a shortened life span in adults, indicating the importance of establishing good sleep habits early in life. Lack of sleep can be especially deadly for teens; car accidents are the leading cause of death among teenagers, and safety experts believe sleepy driving is a major factor.
Unfortunately, few teenagers get the sleep they need. In a survey of middle-school and high-school students, University of Colorado researchers found that 82 percent said they woke up tied and unrefreshed, and more than half had trouble concentrating during the day at least once a week.
Blame multitasking for some of this. Many students are juggling after-school activities, homework and part-time jobs. Even when they manage to fulfill these obligations by a reasonable hour, television, the internet, video games, phone calls and text message to friends often keep them awake deep into the night. Taking soda and energy drinks late in the day and going to late-night parties on weekends add to sleep debt. Biology also works against teenagers’ sleep. Their body’s internal clock, which controls when a person starts to feel tired, shifts after puberty (青春期), making it hard for most teens to fall asleep before 11 pm. Class usually beings before 8:15 am., with many high schools starting at 7:15 am. To get to school on time, most teens have to get up by 6:30 am, guaranteeing they’ll be sleep-deprived during the week. Teens often sleep much later on weekends to catch up, making it even harder to fall asleep on Sunday night and wake up Monday morning. Playing catch-up on weekends also doesn’t help teens stay refreshed when they need it most: during the week at school.
Since the 1990s, middle and high school in more than two dozen states have experimented with later school start times. (78)
The results have been encouraging: more sleep, increased attendance, better grades and fewer driving accidents.
But most school still start early, meaning teens have their work cut out for them if they want to get enough sleep.
The main idea of Paragraph 3 is ______.
选项
A、how sleep deprivation (缺乏) can be treated
B、what causes sleep deprivation
C、who is most at risk for sleep deprivation
D、why sleep deprivation is a serious concern
答案
B
解析
主旨题。该段的第一句就是主题句。青少年睡眠不足要归咎于任务多元化。
转载请注明原文地址:https://kaotiyun.com/show/dU3O777K
0
成人本科学位英语
相关试题推荐
Theworldisknowntousthroughmanysenses,notjusthearing,smell,vision,andatcloserange,touchandtaste.Ourskin
Theworldisknowntousthroughmanysenses,notjusthearing,smell,vision,andatcloserange,touchandtaste.Ourskin
IreturnedtoAbuja,thecapitalofNigeria,aftercollegegraduation.Ihadbeentherebeforemymotherbecameaminister.
Thethreesistersdecidedtoholdafamilypartyto______theirparents’silverwedding.
Thoughmyfathersufferedfromillness,hehadto______greatpaintoworkformyeducation.
Amongthe15-year-oldchildren,some______bestudyinginuniversitywhileothersarestilllearningtoreadandwrite.
Theteacher______hisstudentsthinkhighlywaseducatedfromBeijingUniversity.
Howcouldwepossiblythinkthatkeepinganimalsincagesinunnaturalenvironments—mostlyforentertainmentpurposes—isfairan
Newspapersarenotnearlyaspopulartodayastheywereinthepast.Therearenotverymanypeoplewhoseriouslyreadanewspap
ThereflectivetowersofNewYorkCity,whichisontheAtlanticmigrating(迁徙的)route,canbedeadlyforbirds."Weliveinan
随机试题
(2009年年4月)1933年11月,在福州发动抗日反蒋事变的国民党爱国将领是________、________。
下列脑神经出颅途径描述,哪项是错误的
根据《合同法》的规定,当事人对合同价款约定不明确,又没有政府定价或指导价供参照时,合同价款的确定规则为()。
境内某公司代其雇员(中国公民)缴纳20%的个人所得税,2008年5月支付给王某的工资为6900元人民币,则该雇员5月应缴纳的个人所得税税额为( )元。
甲公司主营电池生产业务,现已研发出一种新型锂电池产品,准备投向市场。为了评价该锂电池项目,需要对其资本成本进行估计。有关资料如下:(1)该锂电池项目拟按照资本结构(负债/权益)30/70进行筹资,税前债务资本成本预计为9%。(2)目前市
在我国列入《世界遗产名录》的项目中,湖南武陵源和四川九寨沟都属于自然和文化双重遗产。()
提高教学质量的关键是()。
习近平总书记指出:“不忘本来才能开辟未来,善于继承才能更好创新。”同时阐述了我们民族的“根”和“魂”是()。
在结构化布线系统中,传输介质通常选用双绞线和______。
Itisclearthatwearerapidlybecomingaglobalculture.Newformsofinformationtechnology,intercontinentaltravel,andthe
最新回复
(
0
)