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

★The regular use of text messages and e-mails can lower the IQ more than twice as much as smoking marijuana(大麻). Psychologists say that sending/receiving messages or looking through the many menu options your mobile phone has, lowers a person’s IQ by almost 10 points. British researchers have named this situation “infomania”. Instead of fixed on what they are doing, people’s minds are constantly focused on reacting to the technology surrounding them. This means they don’t pay full attention to the work they are paid to do. The report also added that the brain can not do so many things at once. If you try to do too many things, mistakes begin to occur. And while modern technology can have huge benefits, too much use can be damaging not only to a person’s mind, but to their social life.
★The more televisions 4-year-old children watch, the more likely they are to become bullies later on in school, a newest U.S. study said. At the same time, children whose parents read to them, take them on outings and just generally pay attention to them are less likely to become bullies, said the  report from the University of Washington. Researchers also found gaps in learning and understanding such things as social skills early in life makes it more difficult for children to relate with other children. Watching violence on television leads to aggressive behavior.
★You could soon be able to add your favorite perfume to your e-mails. UK net provider Telewest Broadband is testing a system to let people send e-mails over the Internet with sweet smell. It has developed a kind of hi-tech air freshener that plugs into a PC and sprays a smell linked to the message. Telewest says it could be used by supermarkets to attract people with the smell of fresh bread or by holiday companies seeking to stir up images of sun-kissed beachers.
【小题1】.
What does “infomania” refer to according to the first part of the text?

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.”
【小题1】The word “zzzs” (Paragraph 1) most probably means __________.

I’ve always had strong opinions of how love should be expressed, but others had their own ways of showing care.
What I   36  most about visiting my boyfriend’s parents is the loud tick of the clock in the dining room as we   37  ate our meal. With so little conversation I was quick to   38 his family as cold. When we got into the   39   to go home, his father suddenly appeared. 40  , he began to wash his son’s windscreen. I could feel he was a caring man through the glass.
I learned another lesson about love a few years later. My father often  41  me early in the morning. “Buy Xerox. It’s a good sharp price,” he might say when I answered the phone. No pleasant  42 or inquiry about my life, just financial instructions. This manner of his  43 me and we often quarreled. But one day, I thought about my father’s success in business and realized that his concern for my financial security lay behind his  44   morning calls. The next time he called and told me to buy a stock, I  45  him.
When my social style has conflicted with that of my friends, I’ve often felt   46 . For example, I always return phone calls  47  and regularly contact with my friends. I expect the same from them. I had one friend who rarely called, answering my messages with short e-mails. I rushed to the  48  : She wasn’t a good friend! My anger  49   as the holidays approached. But then she came to a gathering I  50 and handed me a beautiful dress I had fallen in love with when we did some window-shopping the previous month. I was  51   at her thoughtfulness, and regretful for how I’d considered her to be  52  . Clearly I needed to change my expectations of friends.
Far too often, I ignored their  53   expressions, eagerly expecting them to do things in my  54 . Over the years, however, I’ve learned to  55  other persons, love signs.

When an emergency situation occurs, observers are more likely to take action if there are few or no other witnesses．This phenomenon is referred to as the bystander effect．

       The bystander effect is also called the Genovese effect, which was named after Catherine Kitty Genovese, a．young woman who was murdered on March 13, 1964．Early in the morning, 28-year-old Genovese was returning home from work．As she approached her apartment entrance, she was attacked and stabbed（刺）by a man later identified as Winston Moseley．Despite Genovese]s repeated cries for help , none of the dozen or so people in the nearby apartment building who heard her cries called the police for help ．The attach first began at 3:20 , but it was not until 3:50 that someone first contacted the police．

       There are two major factors that contribute to the bystander effect．First, the presence of other people creates a diffusion（分散）of responsibility．Because there are other observers, individuals do not feel as much pressure to take action, since the responsibility to take action is thought to be shared among all of those present．

       The second reason is the need to behave in correct and socially acceptable ways．When other observers fail to react, individuals often take this as a signal that a response is not needed or not appropriate．Other researchers have found that onlookers are less likely to take action if the situation, is ambiguous^ R^E^?）．In the case of Kitty Genovese, many of the 38 witnessing reported that they believed that they were witnessing a " lovers' quarrel" , and did not realize that the young woman was actually being murdered．

The passage seems to suggest that Genovese might not have been murdered if there had been_____．

       A．no observer                 B．fewer observers 

       C．more observers ．   D．younger observers

Genovese was murdered                    .

       A．while she was going out        B．in her apartment

       C．halfway home           D．in front of her apartment ?

The underlined word "this" in the last paragraph probably refers to ____．

       A．not doing anything to help      B．behaving in correct ways

       C．taking action           D．murdering

We can learn from the passage that Genovese's neighbors didn't lend a hand partly because they ____．

       A．were afraid of being attacked by the murderer

       B．thought someone else might come to her rescue．

       C．didn't get along well with her

       D．were sure it was murdering