1. The result of Holmes-Rahe's medical research tells us ____ .

A) the way you handle major events may cause stress 　B) what should be done to avoid stress

C) what kind of event would cause stress 　　　　　D) how to cope with sudden changes in life

30. What is the author's purpose in writing this article?

A) To justify the study of the Boston University Medical Center.

B) To stress the importance of maintaining proper weight.

C) To support the statement made by York Onnen.

D) To show the most effective way to lose weight.

Passage 3

In the 1960s, medical researchers Thomas Holmes and Richard Rahe developed a checklist of stressful events. They appreciated the tricky point that any major change can be stressful. Negative events like “serious illness of a family member” were high on the list, but so were some positive life-changing events, like marriage. When you take the Holmes-Rahe test you must remember that the score does not reflect how you deal with stress-it only shows how much you have to deal with. And we now know that the way you handle these events dramatically affects your chances of staying healthy.

By the early 1970s, hundreds of similar studies had followed Holmes and Rahe. And millions of Americans who work and live under stress worried over the reports. Somehow, the research got boiled down to a memorable message. Women’s magazines ran headlines like “Stress causes illness!” If you want to stay physically and mentally healthy, the articles said, avoid stressful events.

But such simplistic advice is impossible to follow. Even if stressful events are dangerous, many-like the death of a loved one-are impossible to avoid. Moreover, any warning to avoid all stressful events is a prescription(处方)for staying away from opportunities as well as trouble. Since any change can be stressful, a person who wanted to be completely free of stress would never marry, have a child, take a new job or move.

The notion that all stress makes you sick also ignores a lot of what we know about people. It assumes we’re all vulnerable (脆弱的) and passive in the face of adversity (逆境). But what about human initiative and creativity? Many come through periods of stress with more physical and mental vigor than they had before. We also know that a long time without change or challenge can lead to boredom, and physical and mental strain.

29. What was confirmed by the Boston University Medical Center's study?

A) Controlling one's calorie intake is more important than doing exercise.

B) Even occasional exercise can help reduce weight.

C) Weight reduction is impossible without exercise.

D) One could lose ten pounds in a year's time if there's no increase in food intake.

28. "Even exercise professionals concede half a point here" (Line 3, Para. 2) means “They　　　　　　

A) agree that the calories in a small piece of pastry can be difficult to work off by exercise

B) partially believe diet plays a supporting role in weight reduction

C) are not fully convinced that dieting can help maintain one's new weight

D) are not sufficiently informed of the positive role of exercise in losing weight

27. Some people dislike exercise because　　　　 .

A) they think it is physically exhausting

B) they find it hard to exercise while on a diet

C) they don't think it possible to walk 3 miles every day

D) they find consulting caloric-expenditure charts troublesome

26. What is said about the average American in the passage?

A) They tend to exaggerate the healthful effect of "light" beer.

B) They usually ignore the effect of exercise on losing weight.

C) They prefer "light" beer and low-calorie bread to other drinks and food.

D) They know the factors that play a positive role in keeping down body weight.

15. If children have flu-like symptoms, their parents　　　　

A) are advised not to give them aspirin

B) should watch out for signs of Reye syndrome

C) are encouraged to take them to hospital for vaccination

D) should prevent them from mixing with people running a fever

Passage 2

Exercise is one of the few factors with a positive role in long-term maintenance of body weight. Unfortunately, that message has not gotten through to the average American, who would rather try switching to "light" beer and low-calorie bread than increase physical exertion. The Centers for Disease Control, for example, found that fewer than one-fourth of overweight adults who were trying to shed pounds said they were combining exercise with their diet.

In rejecting exercise, some people may be discouraged too much by caloric-expenditure charts; for example, one would have to briskly walk three miles just to work off the 275 calories in one delicious Danish pastry (小甜饼). Even exercise professionals concede half a point here. "Exercise by itself is a very tough way to lose weight," says York Onnen, program director of the President's Council on Physical Fitness and Sports.

　　 Still, exercise's supporting role in weight reduction is vital. A study at the Boston University Medical Center of overweight police officers and other public employees confirmed that those who dieted without exercise regained almost all their old weight, while those who worked exercise

into their daily routine maintained their new weight.

　　 If you have been sedentary ( 极少活动的 ) and decide to start walking one mile a day, the added exercise could burn an extra 100 calories daily. In a year's time, assuming no increase in food intake, you could lose ten pounds. By increasing the distance of your walks gradually and making other dietary adjustments, you may lose even more weight.　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　

14. Which of the following symptoms will distinguish the flu from a cold?

A) A stuffy nose.　　　　　 B) A high temperature.

C) A sore throat.　　　　　 D) A dry cough.

13. According to the passage, to combat the flu effectively,　　　　　

A) one should identify the virus which causes it

B) one should consult a doctor as soon as possible

C) one should take medicine upon catching the disease

D) one should remain alert when the disease is spreading

12. We learn from the passage that　　　　

A) one doesn't need to take any medicine if he has a cold or the flu

B) aspirin should not be included in over-the-counter medicines for the flu

C) delayed treatment of the flu will harm the liver and central nervous system

D) over-the-counter drugs can be taken to ease the misery caused by a cold or the flu