听力原文：W: Can I help you? M: Yes, I'd like to read some articles that are on the Greek mythology. W: Are you the student of Professor Brown's class? M: That's right. How do you know? W: Well, you are not the first person coming in asking for those articles. M: Oh, seeing as how I haven't read any of them yet, it doesn't really matter which one you give me first. W: I'm afraid I can't give you any of them at the moment. They've all been checked out. M: Are you kidding? All of them? W: Every last one. I've asked Professor Brown already to bring in additional copies of the articles, but shortly after I put them on the shelves, some one will come and borrow them away. See that girl in the black sweater? She's been waiting for half an hour for these same articles to be returned. M: And here I went out of my way to free out the whole afternoon to read. W: I'm sorry, but there is not a whole lot I can do about it. All I can suggest is that you come in first thing tomorrow morning and try again, we open at eight. (20)