【正确答案】 A

【答案解析】[听力原文]
   M: Hey, Cathy, did you read this article in the magazine? I can't believe how much man is changing the planet.
   W: Yeah, I had a look at it. Quite interesting I suppose if you believe that sort of thing.
   M: What? What do you mean, "if you believe that sort of thing"? Are you saying you don't believe that we are damaging the planet?
   W: To be honest, Mark, not really.
   M: What are you saying? Are you saying global warming isn't a fact, deforestation isn't a fact, the green-house effect isn't actually happening?
   W: Hey, calm down, Mark. I just think too many people take these things as being definitely true with out knowing all the facts.
   M: You really don't think global warming is happening. You know they've said sea levels are going to rise by quite a few meters over the next fifty to a hundred years. Weather conditions are getting worse all over the world. Can you remember how many big hurricanes there have been in this country over the last few years? I think evidence is all around us.
   W: I don't think we have enough information to be honest. We've only been measuring these things for around two or three hundred years. We have no idea what was happening 50,000 years ago. For all we know, this is just a natural blip, a kind of sudden but temporary change, in the whole climate cycle. I don't think we should change how we're living just because of twenty years of abnormal measurements.
   M: And don't you think all the other effects we're having on the planet are destructive?
   W: what do you mean?
   M: I mean, like, deforestation, overpopulation, threatening the existence of many endangered animals, pollution of the air and the seas... I mean, I could go on if you want!
   W: No, no... I understand what you're saying and, yes, it's true that there are several problems world-wide caused by human influence. I think the destruction of the Amazon rainforest is really dangerous and it's something we could live to regret. I read somewhere that they were considered to be the "lungs of the planet" and there we are happily chopping it all down. And it would be a shame to lose some of those animals that may become extinct, you know, like the rhino or the panda. But I think we shouldn't interfere with nature. If they are going to become extinct, then we have to allow nature to take its course.
   M: You've just contradicted yourself in two sentences, Cathy. First you said it's bad that we're interfering with nature by destroying the rainforest and then...
   W: That's not the same thing!
   M: Well, of course it is! The only reason 99% of these animals are endangered is precisely because WE are threatening their habitats, either by chopping it down as you say or by expanding towns and farming into areas where these animals normally live and hunt. You can't destroy an animal's habitat and then turn around and say we can't interfere with nature to save it.
   W: I don't think having twenty panda cubs in zoos around the world is a very smart way to save an animal. It's totally artificial and is cruel to the animals involved.
   M: I would go along with that, yes. The real solution is to save the animals original habitat...
   What do the speakers mainly talk about?
本题问对话双方主要谈论什么，属于主旨题。对话中男女双方围绕global warming、deforestation和threatening the existence of many endangered animals等内容进行了颇为激烈的交锋。A项概括以上内容，为答案。
   B项“濒危动物”和C项“气候变暖”均在对话中有所谈及，但均属于细节信息，不足以概括对话主旨。女士在对话末尾提到，不认为在世界各地的动物园里养20只熊猫幼崽是拯救动物的好方式(I don't think...is a very smart way...)。男士对此表示同意。D项虽可视为对以上信息的概括，但此信息只在末尾提及，不足以概括对话主旨。