Sleeping in on Saturday after a few weeks of too little shuteye may feel refreshing, but it can give a false sense of security.
New research shows long-term sleep loss cannot be cured that easily. Scientists researched the effects of short- and long-term sleep loss and found that those who suffer long-term sleep loss may function normally soon after waking up, but experience steadily slower reaction times as the day goes by, even if they had tried to catch up the previous night.
The research has important safety significances in an increasingly busy society, not just for shift-workers but for the roughly one in six Americans who regularly get six hours or less of sleep a night.
“We know that staying awake 24 hours without sleep will affect your performance to do all sorts of things, and this effect equals to drinking too much when driving,” said lead researcher Dr. Daniel Cohen of Boston’s Brigham and Women’s Hospital. But when those who suffer long-term sleep loss become all-nighters, “the harm is increased ten times,” Cohen said.
The National Institutes of Health says adults need seven hours to nine hours of sleep for good health. Regularly getting too little sleep increases the risk of health problems, including memory impairment and a weakened immune system. More immediately, too little sleep affects reaction times; sleepiness is to blame for car crashes and other accidents.
It has critically important complicated and unexpected results for anyone who works “crazy hours” and thinks they are performing fine with a few hours of weeknight sleep, said Harris, director at New York’s Montefiore Medical Center. “Don’t think you can just bank up your sleep on the weekend, because it doesn’t work that way,” he warned.
1.The text mainly advises people ______.
A. to sleep more time B. to sleep in on Saturday
C. to sleep scientifically D. to sleep little on weekend
2.People with long-term sleep loss ______.
A. are quicker in thinking B. may feel refreshed soon after waking up
C. are surely energetic D. can have a strong sense of security
3.What can we learn from the text?
A. Most of the Americans get six hours or less of sleep a night.
B. Staying up is worse for those who suffer long-term sleep loss.
C. Traffic accidents have little to do with sleepiness.
D. One in six Americans are all-nighters.
4.Which of the following is the immediate effect of long-term sleep loss?
A. Health problems B. Immune system
C. Reaction times D. Memory impairment
5.The underlined phrase “bank up” in the last paragraph most probably means ____.
A. pile up B. pick up C. add up D. build up
高三英语阅读理解简单题
Sleeping in on Saturday after a few weeks of too little shuteye may feel refreshing, but it can give a false sense of security.
New research shows long-term sleep loss cannot be cured that easily. Scientists researched the effects of short- and long-term sleep loss and found that those who suffer long-term sleep loss may function normally soon after waking up, but experience steadily slower reaction times as the day goes by, even if they had tried to catch up the previous night.
The research has important safety significances in an increasingly busy society, not just for shift-workers but for the roughly one in six Americans who regularly get six hours or less of sleep a night.
“We know that staying awake 24 hours without sleep will affect your performance to do all sorts of things, and this effect equals to drinking too much when driving,” said lead researcher Dr. Daniel Cohen of Boston’s Brigham and Women’s Hospital. But when those who suffer long-term sleep loss become all-nighters, “the harm is increased ten times,” Cohen said.
The National Institutes of Health says adults need seven hours to nine hours of sleep for good health. Regularly getting too little sleep increases the risk of health problems, including memory impairment and a weakened immune system. More immediately, too little sleep affects reaction times; sleepiness is to blame for car crashes and other accidents.
It has critically important complicated and unexpected results for anyone who works “crazy hours” and thinks they are performing fine with a few hours of weeknight sleep, said Harris, director at New York’s Montefiore Medical Center. “Don’t think you can just bank up your sleep on the weekend, because it doesn’t work that way,” he warned.
1.The text mainly advises people ______.
A. to sleep more time B. to sleep in on Saturday
C. to sleep scientifically D. to sleep little on weekend
2.People with long-term sleep loss ______.
A. are quicker in thinking B. may feel refreshed soon after waking up
C. are surely energetic D. can have a strong sense of security
3.What can we learn from the text?
A. Most of the Americans get six hours or less of sleep a night.
B. Staying up is worse for those who suffer long-term sleep loss.
C. Traffic accidents have little to do with sleepiness.
D. One in six Americans are all-nighters.
4.Which of the following is the immediate effect of long-term sleep loss?
A. Health problems B. Immune system
C. Reaction times D. Memory impairment
5.The underlined phrase “bank up” in the last paragraph most probably means ____.
A. pile up B. pick up C. add up D. build up
高三英语阅读理解简单题查看答案及解析
—Do you mind if I shut down the radio?
—_____. The good news will be on the air in a few minutes.
A.Of course not B. I’m afraid I do
C. why not D. Yes, just go ahead
高三英语单项填空中等难度题查看答案及解析
It’s nearly noon on a Saturday and you can’t believe it: your teenager is still in bed, sleeping away. But before you wake him up---mumbling to yourself that you can’t believe what a lazybones he is---you should know that he probably needs all the zzzs he can get.
As much as nine hours of sleep a night, in fact. Furthermore, teens’ circadian rhythms (i.e., processes that occur once a day) mean that young people would rather stay up past midnight and rise after 9 a.m. The result? Many teens stay up late, drag themselves out of bed early for school and try to make up the sleep debt on the weekends---or in class!
“There’s a biological reason why teens stay up late and want to sleep late,” says Dr. Stan Kutcher, the Sun Life Chair of Adolescent Mental Health at Dalhousie University in Halifax. “Their natural sleep-wake cycle changes as part of the maturation process. And because of changes in their social activities, recovering from sleep debt is more problematic.”
Teens need extra sleep for several reasons. First, their brains are changing. “The brain is reorganizing itself, laying down new pathways. What we’re seeing is a relationship between brain redevelopment and an increased need for sleep,” says Kutcher. As well, growth hormones are released during sleep, so adequate sleep is crucial for adolescents’ physical development. In addition, everything adolescents have learned in school that day is being processed and locked into long-term memory during sleep. Sufficient sleep also plays a key role in overall physical health. The immune system, for example, needs deep sleep to become and remain robust(healthy).
Staying up late on school nights means that, on average, teens get between six and a half and seven hours of sleep a night---about two hours less than they need. As a result, many either doze off in class or have trouble concentrating. Some of the behavioural problems and irritability in teens can be linked directly to sleep deprivation(损失), Kutcher says.
Then there’s the breakfast issue. Dr. Carlyle Smith, a sleep researcher and a psychology professor at Trent University in Peterborough, Ont., adds that many teens simply cannot tolerate food when they first wake up, so skipping breakfast becomes another factor in reduced alertness in class. The most obvious solution to the teen sleep problem is to have school start later in the day, but initiatives(积极性) toward this across the country have gone nowhere, Smith says, mainly because of costs and resistance from school boards and teachers.
So for now, just sympathize with your teens. Encourage them to go to bed, if not early, then at least at a regular time, so they won’t develop insomnia from erratic(不稳定的) schedules. Warn them not to have too many caffeinated drinks before bed. And don’t let sleeping away the weekend become an issue to fight over. Schedule family activities to take place later in the day on weekends and let them sleep in. “If you want your kids to grow and remember stuff, let them sleep,” says Smith. “It’s not laziness. Their brains are working really, really hard.”
1.The word “zzzs” (Paragraph 1) most probably means __________.
A．food B．sleep C．energy D．blame
2.What causes teenagers to be less sleepy late at night and more sleepy early in the morning?
A．Caffeinated drinks.
B．Too much family activities.
C．Circadian rhythms.
D．Too much homework.
3.How many reason why teens need extra sleep are mentioned in Paragraph 4?
A．Three. B．Four. C．Five. D．Six.
4.One of the reasons why many teenagers fail to have better performances in class is that __________.
A．teenagers go to bed early and sleep late
B．teenagers stay up late and get up late
C．teenagers participate in too many social activities at night
D．teenagers skip breakfast because of sleeping in
5.The author wrote this article to __________.
A．advise parents to let sleeping teenagers lie
B．explain why teenagers often sleep late
C．state schools should start late in the day
D．warn teenagers not to drink coffee before bed
高三英语阅读理解中等难度题查看答案及解析
Smith is poor. He has to manage on _________ $ 10 per week.
A. as few as B. as little as
C. as many as D. as much as
高三英语单项填空中等难度题查看答案及解析
News of the world was gone, shut down after ______ in the biggest newspaper scandal ever to hit Britain.
A. catching B. caught
C. being caught D. having caught
高三英语单项填空中等难度题查看答案及解析
Of the seven days in a week, Saturday is said to be the most popular ____ for a wedding in some countries.
A. way B. situation C. event D. choice
高三英语单项填空中等难度题查看答案及解析
Of the seven days in a week, Saturday is said to be the most popular ______ for a wedding in some countries.
A. way B. situation C. event D. choice
高三英语单项填空简单题查看答案及解析
Of the seven days in a week.Saturday is said to be the most popular _______ for a wedding in some countries.
A.way B.situation C.event D.choice
高三英语单项填空中等难度题查看答案及解析
Of the seven days in a week.Saturday is said to be the most popular _______ for a wedding in some countries.
| A．way | B．situation | C．event | D．choice |
高三英语单项填空简单题查看答案及解析
On January 12,a few days after registration for the course of Psychology and the Good Life,roughly 300 people had signed up. Within three days,the figure had more than doubled. After three more days, about 1,200 students,or nearly one-fourth of Yale undergraduates,were enrolled.
The course,taught by Laurie Santos,42,a psychology professor and the head of one of Yale's residential colleges,tries to teach students how to lead a happier,more satisfying life in twice-weekly lectures.
＂Students want to change,to be happier themselves,and to change the culture here on campus," Dr,Santos said in an interview. "With one in four students at Yale taking it,if we see good habits, things like students showing more gratitude,delaying less,increasing social connections,we're actually seeing change in the school's culture. "
Dr. Santos discovered that Yale students are interested in the class because,in high school,they had to give up their happiness to gain admission to the school,adopting harmful life habits that have led to what she called"the mental health crises we're seeing at places like Yale. "A 2013 report by the Yale College Council found that more than half of undergraduates sought mental health care from the university during their time there.
＂In reality,a lot of us are anxious,stressed and unhappy,"said Alannah Maynez,19,a freshman taking the course. "The fact that a class like this has such large interest speaks to how much students numb their emotions-both positive and negative-so they can only focus on their work,the next step and the next accomplishment. "
Students have long requested that Yale offer a course on positive psychology,according to Woo-Ky-oung Ahn,director of undergraduate studies in psychology,who said she was"blown away"by Dr. Santos' s proposal for the class.
Administrators like Fr. Ahn expected significant enrollment for the class,but none anticipated it being quite so large. Psychology and the Good Life,with 1,182 undergraduates currently enrolled,stands as the most popular course in Yale's 316-year history. The previous record-holder-Psychology and the Law-was offered in 1992 and had about 1,050 students,according to Marvin Chun,the Yale College dean. Most large lectures at Yale don't exceed 600.
1.What is the purpose of the course?
A.To make students learn to show thanks.
B.To change the culture of the campus.
C.To increase students 'social connections.
D.To teach students how to become happier.
2.What does the underlined word"numb"in the fifth paragraph mean?
A.Unable to express.
B.Managing to let out.
C.Willing to share.
D.Failing to control.
3.What can be inferred from the fourth paragraph?
A.Students are interested in the course.
B.Students suffered from mental problems before.
C.Students have changed greatly after the course.
D.Students pay much attention to their performances.
4.What's the text mainly about?
A.Mental problems of undergraduates.
B.A famous professor-Laurie Santos.
C.Yale's most popular course in history.
D.How to teach college students to be happy.
高三英语阅读理解中等难度题查看答案及解析