【正确答案】 B

【答案解析】[听力原文]
Jenny, a reporter, is interviewing Nick, a visiting scholar from Australia on pollution in China.
Jenny: Professor Smith...
Nick: Oh, please call me Nick. This isn"t a very formal interview, is it?
Jenny: All right. Nick, how long have you been working in China?
Nick: Oh, a long time, about five years.
Jenny: So you"ve had enough time to feel and think about the problem of pollution here in China.
Nick: Well, I did that in my first week here. You know, air pollution is quite bad in China.
Jenny: Yes. We have major problems of air, land and water pollution. What do you think we should do to solve these problems?
Nick: First, the government needs to make laws to prevent pollution. Then ordinary citizens have to take responsibility themselves for solving the problem.
Jenny: What do you think ordinary people can do to help solving this serious problem?
Nick: They can help in many ways. They first should not drop litter in public places. I am really shocked when I find many people littering in streets, on campuses and in the countryside.
Jenny: That"s true. Many people don"t realize what they are doing is just polluting the environment. Does this happen in your country?
Nick: Well, of course it does happen sometimes. But usually in my country, when people find others littering, they will pick it up and run after the person, telling him to put it in a dustbin.
Jenny: I think this will embarrass the person and he will not do that again. Now I know what you mean by saying that ordinary citizens can help.
Nick: And also the officials and educators should set good examples in environmental protection. But I find some of them also littering. I remember once I was travelling together with some university teachers in the countryside, I was very shocked that they just threw bottles out of the car windows. How can they tell and let young people believe that every one should be responsible for environmental protection.
Jenny: Yes. I suppose we often don"t realize what we are doing is wrong when littering. Do you think it is too late for us to solve this problem?
Nick: No, not at all. I think it"s a matter of setting good examples and educating people to be aware of the problem.
Jenny: Well, thank you very much for your suggestions. Let"s just hope all of us start to realise our duty to protect our environment.