Eating too much fatty food, exercising too little and smoking can raise your future risk of heart disease. But there is another factor that can cause your heart problems more immediately: the air you breathe.
Previous studies have linked high exposure (暴露）to environmental pollution to an increased risk of heart problem, but two analyses now show that poor air quality can lead to heart attack or stroke (中风）within as little as a few hours after exposure. In one review of the research, scientists found that people exposed to high levels of pollutants (污染物）were up to 5% more likely to suffer a heart attack within days of exposure than those with lower exposure. A separate study of stroke patients showed that even air that the U. S. Environmental Protection Agency (EPA) considers to be of “moderate” (良好）quality and relatively safe for our health can raise the risk of stroke as much as 34% within 12 to 14 hours of exposure.
The authors of both studies stress that these risks are relatively small for healthy people and certainly modest compared with other risk factors such as smoking and high blood pressure. However, it is important to be aware of these dangers because everyone is exposed to air pollution regardless of lifestyle choices. So stricter regulation by the EPA of pollutants may not only improve environmental air quality but could also become necessary to protect public health.
【小题1】The text mainly discusses the relationship between        .      

短文改错﹙10分﹚
Though great progress have been made in science these years, there are still many people live in poor conditions. They make their lives by collecting or selling used things. Their children cannot go to school because they had not enough money to send their children there. How do you think so many people still suffer from poverty now? The answer lies on the population explosion﹙人口大爆炸﹚. A president of a developing country once said, “It is us who are to blame for the poverty because we used to ‘produce’ child without limit.” Although this few words sound simple enough, they have clear pointed out one of the causes of the population explosion.

Vicki Larrieux, a 22-year-old student from Portsmouth, says she is unable to keep a healthy diet because she is frightened of vegetables. She survives on a diet of meat, potatoes, cereals（谷类食品）and apples but refuses even a single slice of carrot on her plate. She suffers from sweating and panics at the slightest sight of a carrot or a pea.
“I have always had a fear of vegetables. Even as a child I used to freak out if some carrots or a few peas were on my plate.” She said. “But as it continued into adult life, I started to think it might not just be a dislike for vegetables but an actual phobia（恐惧症）. Every time I see vegetables, not just on my plate, but anywhere, I would get feelings of panic and my heart would beat faster.”
Miss Larrieux’s condition makes trips to the supermarket or eating out at a restaurant with her boyfriend a major problem. It is an unpleasant experience for her to go to the supermarket. Luckily, her boyfriend is very understanding and does his best to comfort her.
A spokesman for phobia charity Anxiety UK says that around 13 percent of British people suffer a phobia of some form, there are treatment available（有效的）including medication and self-help groups for all manner of phobias.
1. Larrieux eats the following as a daily diet EXCEPT______.
A. meat        B. potatoes        C. peas       D. cereals
2. The underlined part “freak out” in Paragraph 2 means “_________”.
A. feel scared       B. get interested
C. feel relaxed      D. get sad
3. According to the passage, Larrieux’s fear for vegetables _____.
A. was found out recently            B. is a kind of phobia
C. makes her famous                   D. makes her hard to get along with
4. What do we know from the passage?
A. Only a few people around the world suffer from phobias
B. Larrieux is not confident about her future
C. Larrieux’s boyfriend doesn’t like meat
D. Phobia can be treated.

Jeremy Wirick, 9, has been back in school for less than two months, but he has already had several asthma(哮喘)attacks. A recent attack happened on October 2, after he pushed himself too hard in physical exercise. Running, power walking, jogging and push-ups took their toll. When Jeremy got home an hour or two later, he was out of breath. He needed to use a nebulizer（喷雾器）, a machine that helps send medicine quickly to the lungs, to get his breathing back to normal.
Asthma attacks like Jeremy increase in September and October. More than six times as many asthma sufferers who are primary-school age need hospital treatment in the fall as in the summer.
Experts believe many factors can cause back-to-school asthma. Kids get together in close spaces, they start passing viruses around. A viral infection(感染) can cause an asthma attack. There are also certain fall allergies(过敏症)that can cause attacks. Exercise is another common cause of an attack. Besides, the stress of school can make asthma worse.
Parents can play a big role in helping kids with asthma start the school year right. Dawne Gee’s 10-year-old son, Alexander, has had asthma since he was a baby. Before the school year starts, she tells school workers in writing about her son’s asthma.
The Gees live in Kentucky, which has passed laws allowing students to carry their asthma medication(药物治疗)with them at school. Alexander’s mom makes sure he has his inhaler(人工呼吸器)with him when he goes to school and that he keeps it on hand at all times. In Delaware, where Jeremy lives, kids are allowed to carry their inhalers at school.
The American Lung Association says that about 6.2 million American children suffer from asthma. Asthma is the chronic (慢性) illness that causes students to miss the most days of school. There are many things that schools can do to help students control their asthma
【小题1】The passage mainly deals with _______.

A．how to prevent and treat Asthma	B．what Asthma is and its medication
C．the side-effects Asthma has on kids	D．the causes of Asthma and how to control it at school

A．tips on asthma for schools	B．a survey on students with asthma
C．the effects asthma has on students	D．further understanding of Asthma

Want to stay away from colds? Put on a happy face.
Compared to unhappy people, those who are cheerful and relaxed are less likely to suffer from colds, according to a new study. It’s possible that being happy helps the body fight illnesses, say the researchers from New York University.
“It seems that positive(积极的) feelings may reduce (减少)the danger of illness,” said the study’s chief researcher Sheldon Cohen.
In an earlier study, Cohen found that people who were cheerful and lively caught coughs and colds less often. People who showed feelings were also less likely to tell their doctors that they felt ill.
In this study, Cohen’s interviewed 193 adults every day for two weeks. During the interviews, the people told researchers about were given colds by doctors and had to stay alone in a room for six days.
The results showed that everyone in the study was equally(相等地) likely to get ill. Buy for people who said they felt happy during the research period, their illness are less serious and lasted for a shorter time.
Cohen believes that when people experience positive feelings, their body may produce a chemical that helps fight illness and disease. So if you are worried abut your health, look on the bright side more often.
【小题1】 What did the study find?