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【C7】
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【C2】
Section B
Directions: There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A, B, C and D. You should decide on the best choice.
The predictability of our mortality rates is something that has long puzzled social scientists. After all, there is no natural reason why 2,500 people should accidentally shoot themselves each year or why 7,000 should drown or 55,000 die in their ears. No one establishes a quota(限额) for each type of death. It just happens that they follow a consistent pattern year after year.
A few years ago a Canadian psychologist named Gerald Wilde became interested in this phenomenon. He noticed that mortality rates for violent and accidental deaths throughout the western world have remained oddly static throughout the whole of the century, despite all the technological advances and increases in safety standards that have happened in that time. Wilde developed an intriguing theory called "risk homeostasis". According to this theory, people instinctively live with a certain level of risk. When something is made safer, people will get around the measure in some way to reassert the original level of danger, If, for instance, they are required to wear seat belts, they will feel safer and thus will drive a little faster and a little more recklessly, thereby statistically canceling out the benefits that the seat belt confers. Other studies have shown that where an intersection is made safer, the accident rate invariably falls there but rises to a compensating level elsewhere along the same stretch of road. It appears, then, that we have an innate need for danger.
In all events, it is becoming clearer and clearer to scientists that the factors influencing our life span are far more subtle and complex than had been previously thought. It now appears that if you wish to live a long life, it isn't simply a matter of adhering to certain precautions.., eating the right foods, not smoking, driving with care. You must also have the right attitude. Scientists at the Duke University Medical Center made a 15-year study of 500 persons, personalities and found, somewhat to their surprise, that people with a suspicious or mistrustful nature die prematurely far more often than people with a sunny disposition. Looking on the bright side, it seems, can add years to your life span.
The social scientists have long felt confused about the fact that______.
听力原文：M: Well, I was wondering ff we could eat out together this evening.
W: Sure. Why not？ But it's my treat this time.
Q: What does the woman mean？
(15)
听力原文： In America, self-improvement is a national pastime, Every year, more and more Americans spend there leisure time trying to improve themselves in one way or another.
One popular form. of self-improvement is the search for physical fitness. Thousands of Americans who never exercised are now out on the streets, jogging in fashionable running suits and expensive sports shoes. They boast of how many miles they run each day and of how many pounds they lose each week. Others are turning to swimming, tennis, dance, and the martial arts to improve their physical fitness.
Instead of running around the park in the morning or evening, other Americans are studying yoga, a Hindu philosophy or doing serious thinking quietly in their homes. They are seeking to improve themselves by finding peace and calmness.
Adult education is another form. of self-improvement. After a hard day's work, many Americans take evening courses at a local high school or college. There they can study a variety of subjects. Often these people are preparing to return to the job market or trying to qualify themselves for better jobs. A mother busy raising her children might attend night school to learn secretarial skills. A secretary might return to study accounting. Some retired people go back for the education they missed at an earlier age.
(33)
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