A、Current issues in economics B、Choices faced by conservationists C、A recent biology lecture D、Topics for a research paper BWhat

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问题  
W: Hi, Bill, how is it going?
M: Oh, hi, Jan. I’m OK. How about you?
W: You can probably tell just by looking at me. I’m really busy. Hey, what are you reading?
M: A pretty interesting article. My biology professor assigned it, and I thought I just look it over. But I got really involved in it. It’s about endangered species.
W: That sounds pretty interesting. I’m getting frustrated with the two research papers I’m struggling with.
M: Oh?
W: And can you believe they are both due on the same day?
M: That’s tough.
W: I’ll get through it. So what’s this you are reading?
M: Well, it’s basically about the choices conservationists are faced with. You know, these days when funding so hard to come by.
W: Wait a minute. Is the focus on biology or economics?
M: Both. Conservationists don’t have enough funding to save every endangered species in the world, so they have to decide based on what would be lost if a species became extinct.
W: Can you give me an example of what you mean?
M: Take for instance, two animals, the spotted awl and the tailed toad. The article says the toad is unique. It has no relatives. But there are a lot of varieties of awls.
W: So, if that toad became extinct, we’d lose an important link in the chain of revolution, right?
M: Exactly. But that isn’t so for the awl. So for conservationists, it might be clear choice of which animal to save.
W: I see. I am glad I don’t have to make that kind of decision. Aren’t you?

选项 A、Current issues in economics
B、Choices faced by conservationists
C、A recent biology lecture
D、Topics for a research paper

答案B

解析 What?are?the?speakers?mainly?discussing??
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