For many people, there is only one good reason to go to an amusement park: the roller coaster. But why do People go on roller coasters? Where else in the world can you scream at the top of your lungs 题目和参考答案——青夏教育精英家教网—

A serious problem for today’s society is who should be responsible for our elderly(老年人) and how to improve their lives. It is not only a financial problem but also a question of the system we want for our society. I would like to suggest several possible solutions to this problem.
First, employers should take the responsibility for their retired employees. To make this possible, a percentage of profits should be set aside for this purpose. But when a company must tak

e life-long responsibility for its employees, it may suffer from a commercial disadvantage due to higher employee costs.
Another way of solving the problem is to return the responsibility to the individual. This means each person must save during his working years to pay for his years of retirement. This does not seem a very fair model since some people have enough trouble paying for their daily life without trying to earn extra to cover their retirement years. This means the government might have to step in to care for the poor.
In addition, the government could take responsibility for the care of the elderly. This could be financed through government taxes to increase the level of pensions（养老金）. Furthermore, some in-situation should be created for senior citizens, which can help provide a comfortable life for them. Unfortunately, as the present situation in our country shows, this is not a truly viable answer. The government can seldom afford to care for the elderly, particularly when it is busy trying to care for the young.
One further solution is that the government or social organizations establish some working places especially for the elderly where they are independent.
To sum up, all these options（选择）have advantages and disadvantages. Therefore, it is reasonable to expect that some combination of these options may be needed to provide the care we hope to give to our elderly generations.
小题1:What is the passage mainly about?

A．The problems faced by the old in society.

B．Why we should take responsibility for the old.

C．How we can improve the lives of the old.

D．Where the old can go to get their pensions.

小题2:According to the passage, how can the government help to improve the lives of retired people?

A．Set aside some profits to help people with problems after they retire.

B．Increase savings levels of people during their working years.

C．Increase the discounts for food and transport for the old.

D．Make available pensions for those who have retired.

小题3:The underlined word “viable” most probably means “__________”.

小题4:What can be concluded from the passage?

A．Taking care of the old is mainly an issue of money.

B．Employers should allow their workers to retire at a later age.

C．Becoming independent should be the goal of most old people.

D．There is no single solution to the problems of the old.

小题5:What is the writer’s main purpose in writing this article?

A．To point out the need for government support for old people.

B．To make general readers aware of the problems of retired people.

C．To discuss some possible solutions to an important social problem.

D．To instruct retired people on how they can have a happier life.

The sleep debt is the difference between the amount of sleep you should get and the amount you actually get. It grows every time we skim some extra minutes off our nightly sleep. “People accumulate sleep debts gradually,” says Dr. William Dement, founder of the Stanford University Sleep Clinic. Studies show that such short-term lack of sleep leads to a foggy brain, impaired vision, worsened driving and troubled remembering. Long- term effects include obesity, insulin(胰岛素) resistance, and heart disease.
A 2007 survey by the National Sleep Foundation reports that Americans sleep for 6.9 hours per night, 6.8 hours on average during the week and 7.4 hours on the weekends. Generally, experts recommend eight hours of sleep per night, although some people may require only six hours of sleep while others need ten. That means on average, Americans lose one hour of sleep each night more than two full weeks of sleep every year.
The good news is that the sleep debt can be repaid with some work, though it won’t happen when you sleep longer for once. Adding an extra hour or two hours of sleep a night is the way to catch up. For the long-term sleep shortage, it takes a few months to get back to natural sleeping pattern, says Lawrence J. Epstein, medical director of the Harvard Sleep Health Center.
Go to bed when you are tired, allowing your body to wake you in the morning, with no alarm clock. You may find yourself uncomfortable at the beginning of the recovery cycle. Expect to bank to ten hours shut-eye per night. As the days pass, however, the amount of sleeping time will gradually decrease. For recovery sleep, both the hours of the sleep and the intensity(强度) of the sleep are important. The most refreshing sleep occurs during deep sleep, which is generally considered a restorative (促使健康的) period for the brain. And when you sleep for more hours, you allow your brain to spend more time relaxing.
As you reduce the sleep debt, your body will come to rest at a sleeping pattern that is specifically right for you. Sleep researcher believe that genes determine our individual sleeping patterns. So you can’t train yourself to be a “short sleeper”. A 2005 study in the journal Sleep found that the more tired we get, the less tired we feel.
46. Which of the following is NOT the side effect of sleep debt?
A. Putting on weight. B. Having a bad memory.
C. Having trouble eating food. D. A temporary loss of eyesight.
47. We learn from the 2007 survey that _______.
A. Americans generally don’t have enough sleep
B. Americans sleep too much over the weekends
C. everyone is supposed to sleep for eight hours
D. most people lack two weeks of sleep every year
48. What should we do to make up for the sleep shortage?
A. We should go to sleep when we are free.
B. We should sleep for at least ten hours every day.
C. We should sleep for one or two more hours at night.
D. We should sleep day and night during the holidays.
49. Why is the intensity of the sleep important to us?
A. Our brain is resting when we are sleeping deeply.
B. Deep sleep helps our brain to fully recover.
C. We feel more relaxed when sleeping soundly.
D. Short sleep makes our body more refreshing.
50. The author seems to believe that _________.
A. the more tired we are getting, the more sleep we need
B. the sleeping patterns have nothing to do with our genes
C. it is possible for us to reduce our sleep time by training
D. it is wise for us to adapt to our natural sleeping patterns.

Scientists have developed a water treatment system that they say is a powerful but simple way to save lives. Four grams of chemicals can treat ten liters of dirty water for a low cost, about ten cents.
Experts say infections from dirty water kill several thousand children in developing countries every day. The Procter and Gamble company has been developing the "PUR Purifier of Water" system since 1995. The company has been working with the United States Centers for Disease control and Prevention(C.D.C.).
C.D.C. researchers tested it in Guatemala, Pakistan and Kenya. Procter and Gamble researcher Greg Allgood says cases of diarrhea(腹泻) in those studies fell by about 50 percent. Researchers from Johns Hopkins University in Maryland tested the system at a refugee camp in Liberia. Mr. Allgood says that study found a reduction of more than 90 percent. Use of the system is being expanded worldwide.
The treatment contains bleach(漂白剂) to kill disease-causing organisms. It also contains something that dirt and other particles stick to. Mr. Allgood says the chemicals can remove lead and other dangerous metals and even agricultural poisons like D.D.T.
Mr. Allgood heads the Children's Safe Drinking Water program at Procter and Gamble. He says about forty million packets of the treatment have been given to countries for free. They have been used in emergencies and in areas with limited supplies of clean water.
Clean water is a limited resource in many parts of the world. Delegates from about 130 nations attended the Fourth World Water Forum last month in Mexico City. Scientists, policy experts and others discussed ways to provide clean water to the world’s poor. Organizers say more than twenty percent of the world population lacks clean drinking water. The final declaration did not go so far as to declare water a human right. But it did say that governments, not private companies, must take the lead in improving the public’s ability to have clean water.
46. What is mainly talked about in this passage?
A. Water pollution around the world.
B. The causes of diarrhea in African countries.
C. A newly developed water treatment system.
D. The Fourth World Water Forum in Mexico City.
47. Which of the following developed the water treatment system?
A. The US Centers for Disease Control and Prevention.
B. The Procter and Gamble Company and C.D.C.
C. The Children’s Safe Drinking Water Program.
D. Johns Hopkins University.
48. Which of the following about the new water treatment system is NOT true?
A. It is effective but very expensive.
B. It was tested in Guatemala, Pakistan and Kenya.
C. It is being expanded worldwide.
D. It can remove dangerous metals in the water.
49. Which of the following shows that the shortage of clean water is a serious problem?
A. Forty million packets of the treatment have been given to countries for free.
B. Delegates from about 130 nations attended the Fourth World Water Forum.
C. Four grams of chemicals can treat liters of dirty water for a low cost.
D. Infections from dirty water kill several thousand children every day.
50. The best title for this article is ______.
A. A Small Packet of Chemicals, a Big Effect on Dirty Water
B. The Procter and Gamble Company and C.D.C.
C. The Shortage of Clean Water
D. How to Cure Diarrhea

Dieters are often advised to stop drinking alcohol to avoid the extra calories lurking in a glass of wine or a favorite cocktail. But new research suggests that women who regularly consume moderate(适度的) amounts of alcohol are

less likely to gain weight than nondrinkers and are at lower risk for obesity (fatness).
The findings, reported this week in the Archives of Internal Medicine, are based on a study of 19,220 United States women aged 30 to 40 who fall into the “normal weight” based on their body mass index. Researchers at Brigham and Women’s Hospital in Boston tracked the women’s drinking habits over 13 years. About 60 percent of the women were light or regular drinkers, while about 40 percent reported drinking no alcohol.
Over the course of the study, 41 percent of the women became overweight. Although alcohol is packed with calories, the nondrinkers in the study actually gained more weight over time: nine pounds, on average, compared with an average gain of about three pounds among regular moderate drinkers. The risk of becoming overweight was almost 30 percent lower for women who consumed one or two alcohol drinks a day, compared with nondrinkers.
The findings are certain to be confusing for women who continue to receive conflicting messages about the health benefits and risks of alcohol. Although moderate drinking is associated with better heart health, regular drinking also increases breast cancer risk.
The trend toward les

s weight gain among drinkers doesn’t appear to hold true for men. A 2003 study of Briti

sh men showed that regular drinkers gained more weight than nondrinkers. Studies suggest that drinking alcohol has different effects on eating habits among men and women. Men typically add alcohol to their daily caloric intake, whereas women are more likely to substitute（替代）alcohol for food. In addition, there may be differences in how men and women metabolize（代谢）alcohol. Metabolic studies show that after men drink alcohol, they experience little if any metabolic change. But alcohol appears to slightly speed up a woman’s metabolism.
The findings don’t mean women should rush to drink alcohol to lose weight. Other research shows that once a person is already overweight, her alcohol metabolism is more efficient, and so an overweight woman may gain more weight from alcohol than a lean(瘦的) woman. The data do, however, suggest that for many women facing weight problems, the extra calories are probably not coming from alcoholic drinks.
小题1: According to the study, which of the following regular drinker is less likely to gain weight than nondrinkers?

A B C D
小题2:That men regular drinkers gained more weight than women regular drinkers is due to the following except ______.

A．women are more likely to substitute alcohol for food.

B．men drink alcohol much faster than women.

C．men and women metabolize alcohol differently.

D．men have different effects on eating habits with women.

小题3: The underlined word “whereas” may probably mean _______.

小题4:What can a dieter probably do before reading this passage?

A．Rush to drink alcohol to lose weight

B．Add alcohol to his or her daily caloric intake.

C．Face the weight problems alone.

D．Try to stop drinking any alcohol or wine.

We arrived at the hospital only to find Dad weak, but his smile was as sure as ever. My husband and I had to work, so our relatives would help him get home from the hospital and look after him. But I wanted Dad to know that we cared about him, too, even when we weren’t with him.
Then I remembered a family tradition (传统) when our children were small. When leaving their grandparents’ home, each child would write a love note for their grandparents to find after we were gone. They hid notes in the food box, or even in the fridge. For days their grandparents would smile as they discovered these notes of the children’s love.
So as I cleaned Dad’s room downstairs before he got home, I began writing notes. Some showed my love. Most notes were in his room downstairs where he would be able to find, but one note was hidden upstairs under his pillow. “Dad, if you have found this note, you

must be feeling better. We are so glad!”
My notes were a reminder (提醒的事物) of our love for Dad. Just like his medicines made him better physically (身体上), these would improve his mental (精神的) health. Several weeks later, I made a phone call to Dad and asked what he was doing. He said, “I’ll tell you what I’m doing. I am just reading the note you left under my pillow upstairs!”
64. Which of the following did the author NOT do for her father?
A. Writing notes.            B. Driving her father home.
C. Making phone calls.       D. Helping to clean her father’s room.
65. The underlined word “these” (in Paragraph 4) refers to “______”.
A. medicines             B. the relatives’ care and help
C. notes                    D. delicious foods
66. The author hid most notes _____.
A. in Dad’s room downstairs     B. in the food box
C. in the fridge               D. under Dad’s pillow upstairs
67. From the passage we can know the author’s notes couldn’t ______.
A. show her love for Dad            B. make Dad remember something
C. make Dad healthier mentally        D. improve Dad’s physical health

All of my childhood and early, adult life, my mom weighed over 220 pounds (one pound =" 0.454" kilograms). I could feel the pain that my mom experienced with her fatness.
I was never uncomfortable about my mother, but I think she was uncomfortable about herself, and that feeling was painful for all of us. And she began to lose weight.
After more than twenty years of battling obesity（肥胖）, my mother completed a forceful eighteen-month diet that left her ninety pounds lighter than before. A new woman was born! At age twenty-eight, I got a new mom! For the first time, I met the woman my mother truly was, the beautiful little lady under the fatness. It wasn’t so much her new body that was the surprise, but rather her new spirit.
To celebrate her new size and to devote herself to dancing again, my mother joined a “Mrs. Forty-Plus” competition, where she would have to model, give a speech and provide a dance performance. She told our family that she did not care if she won — she simply had always wanted to perform on stage.
She told each one of us, “I’m not doing it to win; I’m doing it to dance!”
The competition was exciting! I prayed that my mom would win, but while watching her on stage I was simply overjoyed just by her effort. To me, she had already won. She posed to perfection, her speech brought tears to everyone’s eyes, and her performance was wonderful.
That night, at age fifty-three, my mother was crowned (为......加冕) “Mrs. Forty-Plus”. She was the first person in our family to ever win such a title.
64. The first two paragraphs mainly show that the author’s mom was __________.
A. experienced      B. painful          C. comfortable        D. fat
65. After the author’s mom completed a forceful eighteen-month diet, she was about __________.
A. 85 kilograms    B. 41 kilograms      C. 130 pounds         D. 90 pounds
66. In order to join in the “Mrs. Forty-Plus” Competition, the author’s mom has to do the following EXCEPT __________.
A. providing a dance performance            B. telling a funny story about herself
C. giving a speech to a large number of people D. wearing special clothes to show to people
67. The underlined part in Paragraph 6 means that __________.
A. the author’s mom succeeded in modeling and speaking
B. the author’s mom’s performance was very wonderful
C. the author’s mom was not successful in modeling
D. the author’s mom succeeded in making a speech

When the school year starts, it can be difficult to get up early．After a few early mornings, extreme tiredness might make you feel like you’re going to fall over．The amazing thing is that you probably manage to stay awake all day long and into the night．But how?
A chemical in the brain called dopamine（多巴胺）might be part of the answer．According to new research, dopamine is what keeps people who don’t get enough sleep from conking out．The chemical also has a complicated influence on your ability to think and learn when you don’t get enough sleep．
To study sleep loss and its effect on the brain, scientists rounded up 15 healthy volunteers．The scientists tested each person’s memory and ability to pay attention twice: once after a good night’s sleep and once after being kept up all night long．During the tests, the scientists measured levels of dopamine in the brains of the volunteers．
The results showed that when the volunteers stayed up all night, dopamine levels increased in the brain．Higher levels of dopamine kept the volunteers awake even though they felt tired．Some people are amazingly able to think clearly and react quickly, even when they haven’t had much sleep．Other people have a really hard time paying attention when tired, and their reactions are slow．All of these may be related to the dopamine levels．However, the researchers found that higher levels of dopamine don’t remove the trouble people have thinking and learning while sleep-deprived （缺乏睡眠的）．
60．The underlined phrase “conking out” in the second paragraph probably means     ．
A．staying awake     B．falling asleep
C．paying attention         D．falling over
61．With a higher level of dopamine, one     ．
A．will not dream dreams at night              B．may have trouble in falling asleep
C．can still stay awake after staying up          D．can do better in learning and working
62．We can infer from the last paragraph that        ．
A．not all people can react quickly after they stay up late
B．dopamine in our brain does not work when we are sleeping
C．lack of sleep has no influence on one’s learning and thinking ability
D．the higher the dopamine levels are, the more quickly one reacts
63．The passage is developed by        ．
A．setting up a point and discussing it
B．giving examples and drawing a conclusion
C．pointing out similarities and differences
D．showing a fact and explaining the cause

C
Thousands of people living in the Chinese eapital will celebrate the start of the Chinese New Year by heading for the ski resorts(滑雪场).Never mind that Beijing’s dry weather seldom produces
Now. It is cold enough in winter for snow-making machines to make a covering for the hills north to
The capital. And the rapid growth of a pleasure-seeking middle class has formed the basis for this
New craze(热潮).
Since Beijing’s first ski resort was opened ten years ago, the sport has enjoyed an astonishing increase.There are now more than a dozen resorts. Clothes markets in the city have added bright colored ski suits to their winter collections. Mr.Wei, a manager of a newly-opened ski resort in Beijing, sees the growth of an industry that could soon lead Chinese to head for the ski resorts of Europe. In recent years ski resorts offering natural snow have opened in China. But many are in faraway areas of the country and can’t really match the equipment and services of some ski resorts
In Europe.
Beijing’s sking craze is partly a result of the recent increase in private(私有的)cars. This has led to the growth of a leisure industry in the capital’s suburbs(郊区).which until the late-1990s were unreachable to ordinary people. According to Mr. Wei,About 40％ of the visitors to his resort some in their own cars. The rest are bused in by schools, businesses or government offices.
The problem is making money.Starting ski resorturequires quite a lot of money:hiring land from the local government,preparing the hills,buying snow machines,making sure there are enough
water and electricity to run them,and buying ski equipment for hiring out to customers.The ski resort where Mr.Wei works cost nearly $4m to set up.And,as so often in China when someone comes up with a good idea,many others rush in and price wars break out.Beijing now offers some of
the cheapest ski training classes in the world,though with most people rather new to the sport, expecting a few more doing the same job.
50.What does this text mainly talk about?
A．Convenience for skiers brought about by private cars
B．Skiing as a new way of enjoying one’s spare time
C．Things to be considered when starting a ski resort
D．A sudden increase of ski training classes in Beijing
51.Why are some Chinese likely to go skiing in Burope?
A．To visit more ski areas
B．To ski on natrual snow
C．For a large collection of ski suits
D．For better services and equipment
52.The underlined words”leisure industry”in Paragraph 3 refer to
A．transport to ski resorts
B．production of familycars
C．business of providing spare time enjoyments
D．part-time work for people living in the suburbs
53.What is the main problem in running a ski resort?
A．Difficulty in hiring land
B．Lack of business experience
C．……ski resorts.
D．Shortage of water and electricity

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