题目内容
听力原文： Why do people smoke？
One reason is that people become addicted to cigarettes. The addictive substance in cigarettes is nicotine. When people smoke, the nicotine goes right into the blood stream and makes people feel relaxed. A smoker's body gets accustomed to the nicotine and if he stops smoking he feels nervous. Many smokers try to stop smoking but because of the addiction to nicotine they feel so uncomfortable that they often find it too difficult to stop.
Another reason is that people simply enjoy smoking. Having a cigarette for many people means taking a break. For some people smoking becomes part of their daily life. Many people enjoy smoking because it gives them something to do with their hands.
Many people also like the taste of tar in cigarettes. However, it is the tar that causes cancer. While governments and health experts have tried to get people to give up smoking entirely, cigarette manufacturers have tried to keep selling them by producing cigarettes with less tar. Many people in western countries have welcomed these cigarettes since they find it hard to stop smoking but they want to reduce the risk to their health.
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A．Selecting the necessary equipment.B．Finding a climbing partner.C．Increasing upper-bo
A．To pass the exam.B．To obtain master's degree at the university.C．To join the soccer
听力原文：W: John, have you chosen a physical education class yet for this semester？
M: No. Why？
W: You've got to take rock-climbing. We just had the first class and it looks tike it's gonna to be great.
M: You think I should take rock-climbing？ You've got to be kidding. Besides, how can they teach rock climbing when it's completely flat around here？
W: That's not important. You can't just start climbing without any training. You have to get in shape, learn how to use the ropes, the belts, there's a lot of preparation first.
M: You don't think it's just a little bit dangerous？
W: Not if you know how to use the safety equipment, which is, by the way, pretty hi-tech. The ropes are made of elastic fabrics that stretch a little, the shoes have special grapes on the bottom and the helmets are made of some kind of special plastic. You have to learn how to use all these before you do any real climbing.
M: Well, what's the appeal？ We'll spend the whole semester studying something we don't actually get to do.
W: We will take a climbing trip during spring break. But that's not the point. Climbing is not the only goal. In preparing to climb you learn patience, mental discipline and you gain fantastic physical strength, especially in your hands. For the first few weeks we're going to concentrate entirely on hand and upper body exercises.
M: All that in one sport？ Maybe you are right. Since it is not too late to join the class, maybe I will.
(20)
A．They are trying to persuade people to buy cigarettes with less tar.B．They are trying
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