“Drink your milk. It’s good for you!” You’ve probably heard that many times, and it’s true. Milk contains calcium, which is a necessary nutrient for keeping bones and teeth healthy and strong. The U.S. government even requires milk as part of the National School Lunch Program, saying that students should drink one cup of fat-free or low-fat milk at each meal.

Last Thursday, however, a group of doctors asked the government to remove milk from the lunch program. The Physicians Committee for Responsible Medicine (PCRM) says, “Milk is high in sugar, high in fat and high in animal protein, all of which have negative effects on health.” “One of the only reasons people talk about dairy, or promote it, is that it is going to help build strong bones.” says Dr. Neal Barnard, president of the PCRM. There are better and healthier ways to get calcium such as eating beans, broccoli, cereals and tofu. Orange juice and soymilk that have calcium added to them also supply the nutrient.

Of course, calcium is important for healthy bones and teeth, but your genes, how much vitamin D you take in and getting an hour’s worth of exercise every day all play a part.

Some nutritionists disagree with the idea that milk isn’t important. Keri Gans, a dietitian, says, “I think it’s irresponsible to take away this beverage that children enjoy, especially among those who are unable to meet their nutrient needs for the day, and remove it from the lunch line.”

The U.S. government is studying the request of the PCRM, but a decision may be a long way off. Meanwhile, Marion Nestle, a professor at New York University, puts it best: “Milk has nutrients. Other foods have the same nutrients. It’s just a food. Like other foods, too much might be a problem.”

1.What is mainly talked about in the first paragraph?

A．The concern about students’ health.       B．Traditional attitudes towards milk.

C．Ways to keep bones and teeth healthy.       D．The practice of the U.S. government.

2.According to Dr. Neal Barnard, milk is preferred mainly because _____.

A．children like its taste                     B．people ignore its disadvantages

C．it contains more calcium than other foods     D．the calcium in it can build up bone strength

3.We can learn from the text that _____.

A．bone strength is determined by many factors

B．people’s diets shouldn’t contain animal protein

C．the opinion of the PCRM will soon be accepted

D．people should turn to vegetables for calcium

As the new term starts, freshmen around the world are asking the same question: how can I make the best of four years at college? The New York Times received suggestions recently from PhD students and seniors at some of the top universities . Here is their advice.

“Many young people today are raised in a protective cocoon(茧)”, wrote Tim Novikoff, a PhD student at Comell. “College is a time to explore the world beyond and a chance to learn new things about yourself. Take classes in different subjects. Try lots of different clubs and activities.”

Remember also to take some time away from campus, suggested Willie Lin, a student at Washington University. “If you spend all of your time in school, then it becomes too easy to let criticism from an unkind professor or a conflict with a roommate take up large proportions.”

Try to find work assisting a researcher or a professor---this is the advice from Aman Singh Gill, a PhD student at Stony Brook University. And he also said, “With a window into the world of research, you will find yourself thinking more critically, accepting fewer states at face value and perhaps developing a brave sense of what you can accomplish.”

Many young people can’t imagine even a single day without devices such as computers and cell phones. But try to keep yourself off them, cautioned Christine Smallwood, a PhD student at Columbia University.

Start by scheduling a few Internet-free hours each day, with your phone turned off. It’s the only way you’ll be able to read anything serious. “This will also have the benefit of making you harder to reach, and thus more mysterious and fascinating to new friends and acquaintances(熟人),” she suggested.

1.The underlined sentence in Paragraph 3 means we should _________.

A．spend more time at school                B．take some time out of school

C．listen to criticism more                   D．not argue with roommates

2.Who thinks it is important to consider something critically?

A．Aman Singh Gill                         B．Christine Smallwood

C．Tim Novikoff                           D．Willlie Lin

3.As for modern information devices, the last two paragraphs mean to tell us ________.

A．to keep ourselves off them forever not to use them

B．to turn them off

C．to make a schedule to use them

D．not to use them

4.This passage is mainly about _________.

A．tips from some students for college life

B．ways to read something serious regularly

C．days without cell-phones and computers

D．chances to go to university you really like

Health experts are calling for action to increase cancer care and control in the developing world. A medical research paper says cancer was once thought of as a problem mostly in the developed world. But now cancer is a leading cause of death and disability in poor countries as well. Experts from Harvard University and other organizations urge the international community to fight cancer actively, saying it should be fought in the way HIV/AIDS has been fought in Africa.

Cancer kills more than 7.5 million people a year worldwide. Almost two-thirds are in low-income and middle-income countries.

They discover cancer kills more people in developing countries than AIDS, tuberculosis (肺结核) and malaria (疟疾) combined. But the world spends only 5% of its cancer resources in those countries.

Felicia Knaul from Harvard Medical School was one of the writers of the paper. She was in Mexico when she was found to have breast cancer. She received treatment there and her experience showed her the sharp difference between the rich and the poor in treating breast cancer.

Felicia Knaul says, “And we are seeing how this is attacking young women. It’s the number two cause of death in Mexico for women thirty to fifty-four. All over the developing world, it’s the number one cancer-related death among young women. I think we have to again say that there is much more we could do about it than we are doing about it.”

Professor Knalul met community health workers during her work in developing countries. They were an important part of efforts to reduce deaths from the cancer. They were able to persuade people to get tested to prevent the illness. The experts say cancer care does not have to be costly. For example, patients can be treated with lower-cost drugs.

1.What would be the best title for the passage?

A. Cancer – a leading cause of death in poor countries

B. What should we do in preventing and treating cancer?

C. What makes the first killer in developing countries?

D. Experts urge more efforts to fight cancer.

2.Felicia Knaul’s experience in Mexico shows that       .

A. many Mexican women suffer from breast cancer

B. there is not enough medicine for cancer there

C. many Mexican women can’t afford medical care

D. patients with breast cancer are treated differently

3.From what Felicia Knaul says, we can draw the conclusion that       .

A. breast cancer is a great threat to young women

B. people don’t pay enough attention to breast cancer

C. breast cancer is the second killer among women in Mexico

D. patients can be treated effectively in developing countries

4.Who plays an important part in preventing the cancer in developing countries?

A. The cancer patients.                  B. The health experts.

C. Community health workers.         D. Young women.

5.Which of the following is TRUE according to the passage?

A. The number of cancer cases is decreasing.

B. HIV/AIDS is not being taken seriously in Africa.

C. Over 7.5 million people die of cancer every year.   

D. It is very expensive to treat cancer.

I don’t ever want to talk about being a woman scientist again. There was a time in my life when people asked constantly for stories about what it’s like to work in a field dominated (控制) by men. I was never very good at telling those stories because truthfully I never found them interesting. What I do find interesting is the origin of the universe, the shape of space-time and the nature of black holes.

At 19, when I began studying astrophysics, it did not bother me in the least to be the only woman in the classroom. But while earning my PhD at MIT and then as a post-doctor doing space research, the issue started to bother me. My every achievement --- jobs, research papers, awards --- was viewed through the lens of gender (性别) politics. So were my failures.

Then one day a few years ago, out of my mouth came a sentence that would eventually become my reply to any and all annoyance. I don’t talk about that any more. It took me 10 years to get back the confidence I had at 19 and to realize that I didn’t want to deal with gender issues. After all, I don’t study sociology or political theory.

Today I research and teach at Bamard, a women’s college in New York City. Recently, someone asked me how many of the 45 students in my class were women. You cannot imagine my satisfaction at being able to answer 45. I know some of my students worry how they will manage their scientific research and a desire for children. And I don’t dismiss those concerns. Instead, I have given them this: the visual of their physics professor heavily pregnant doing physics experiments. And in turn they have given me the image of 45 women driven by a love of science. And that’s a sight worth talking about.

1.Why doesn’t the author want to talk about being a woman scientist again?

A．She is unhappy working in male-dominated fields.

B．She is fed up with the issue of gender discrimination.

C．She is not good at telling stories of the kind at all.

D．She finds space research more important than that.

2.We learn from Paragraph 2 that people would contribute the author’s failures to _______.

A．the very fact that she is just a woman

B．her involvement in gender politics

C．the very fact that she is just a scientist

D．her over-confidence as a female scientist

3.Why does the author feel satisfied when talking about her class?

A．Female students no longer have to bother about gender issues.

B．Her students’ achievement has brought back her confidence.

C．Her female students can do just better than male students.

D．More female students now love science than before.

4.What does the image that the author presents to her students suggest?

A．Women students needn’t have the concerns of her generation.

B．Women have more troubles on their way to academic success.

C．Women can balance a career in science and having a family.

D．Women now have no problems pursuing a science career.

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