听力原文:W: Air pollution is one of the most serious problems in the world. Polluted air can make us sick or even kill us. Why isn't more done to stop it?

M: Everyone wants to stop it, but it is a difficult problem to solve. Meat pollution is mused by things people need. W: What do you mean? M: Well, automobiles and airplanes cause pollution but they also provide transportation. W: Right. And factories cause air pollution but they provide people with jobs and products. M: Cities are the worst offenders. In crowded cities, factories and cars can add tons of pollution to the air every day. W: Yes. When I drove, to town yesterday, the clear air changed. It seemed like a dark cloud hung over the city. M: Nobody likes air pollution. It smells bad; it makes it difficult to breathe. W: True, it even damages the plants that provide tis with food. No wonder we get sick. It's dangerous to everyone's health. M: I think everyone knows it is a serious problem. When air pollution can even damage strong materials like steel and concrete; think what it does to poor humans. W: It is terrible, and yet we do need some things that cause it. We'll have to try to figure out a solution. (20) A.Most people don't think it is a serious problem. B.Most of our pollution is caused by things people need. C.The government has not spent enough money to stop it. D.The seriousness of pollution has not been realized by the government.

时间:2023-01-17 16:22:54

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