【正确答案】 B

【答案解析】[听力原文] W: There are so many environmental problems in the world today. Do you think we can really solve them all or will they destroy the world? M: I hope that world leaders can get together and agree on a plan for action, but I doubt it'll happen before it's too late. W: We need to solve the problem of air pollution before we destroy the atmosphere. There's lots of clean, modem technology, but companies in developing countries say it's expensive. Developing countries put more emphasis on economic development than on environmental protection. M: Everyone is looking at the issue in the short term, rather than in the long term. It's the same with the destruction of rainforests. Countries and companies just want the wood. They're not thinking about the long-term damage to forests. We should also remember that the forests are an important natural habitat for thousands of species of animal and plant life. W: In other parts of the world, especially in Africa, there is a problem with desertification. Climate change and over-farming are causing farmland to turn into desert. It means that people cannot grow enough food. M: It also means that people sometimes fight over the farmland that remains. Damaging the environment actually leads to conflicts between people. W: Have you ever thought about joining an organization committed to protecting the environ ment? You could get involved with projects to improve the environment. M: I think I'd like to do that. I could take the things I learn here back to my country when I have finished my studies. Q: What do developing countries do to environ mental protection?