国际交流英语视听说听力原文 电子版B3U7.pdfVIP

国际交流英语视听说国际交流英语视听说 Book 3 Unit 7 Traditional and Modern Medicine Listening 1 Student: Hi, Professor Sullivan? Professor: Hi, Patrick. Come on in. Student: Thanks. I wanted to ... to talk to you about this morning’s lecture. Professor: Good. Have a seat. What would you like to know? Student: Well, in the lecture, you talked about some really promising medicinal plants, like chicory, and ... and some others, I think. And, um, ... also about those two anti-cancer drugs that are made from rosy periwinkle. Professor: Well, actually, they’re made from a synthetic chemical, ... but it’s the same chemical that’s in rosy periwinkle. To be continued Listening 1 Student: OK, so ... basically, what I’d like to know is ... why they’re not studying hundreds of plant species looking for the next great medications. Professor: That’s a good question, and the answer’s pretty complicated. First of all, it costs a lot of money to develop any new drug, and then to do empirical studies on it and get government approval. It’s just a long, expensive process. Student: Sure, but isn’t it worth it if the new drug can save lives? Professor: Yes, but there’s more to it ... With traditional remedies, there are a lot of variables. Imagine that a drug company learns about a plant that’s supposed to inhibit the action of a virus—like the chicory plant, for example. To be continued Listening 1 Professor: They do experiments with the plant, and