A: Li Ping, have you seen the science fiction film "The Wandering Earth"（流浪地球）recently?
B: Yes, I have. I saw it during the Spring Festival.
A: It was reported that the film was great. What does it tell about?
B: It tells a story about humans, threatened（威胁）by a dying and swelling sun, build very large engines to push the planet out of the solar system, starting a centuries-long journey in search of a new sun.
A: You mean our earth is in great danger and we should try to save it, right?
B: Yes, quite right. As we all know, with the of modern agriculture and industry, more and more pollution is produced. We all should have a strong sense of protection. Or we humans won't find places to live in.
A: Sure. But in your opinion, what of pollution are there?
B: There are many. The most important ones are water, air and land pollution.
A: Can you tell me what caused water pollution and how we should solve these problems？
B: As we can see, people are litter into the river and factories are putting waste into the river, so water is polluted. I think we should require our government to close down those factories and call on people to clean up the river and every kind of pollution.
A: Do you have any ideas for solving the air pollution?
B: Well, to cut down air pollution, we should take the bus or subway instead of driving. Of course, riding a bike is also a good choice. It's good for health and it costs anything!
A: What else can we do to help save the earth?
B: Nothing is waste if we have a mind. We can put those things we don't need to good use. We can rethink, reuse and recycle them!
A: Any good examples to share with me?
B: We can learn from Amy Hays, a most unusual woman in the UK. She lives in a house that she built out of rubbish. Jessica Wong from Hong Kong made handbags by using old clothes, especially old jeans. Both of them are good at recycling and they are a(n) to us all.
A: They're great! If only we join together to fight against pollution and learn to recycle, we will make a difference and lead to a better earth.
