听力原文：M: Excuse me. I wonder if you could help me. The reference librarian at the main library suggested I come here. W: What can I do for you? M: Well, I'm working on a term paper about the influence of television on recent United States presidential elections. I found a few of the books I need at the main library, but I was told that the library here at the graduate school had more specialized materials. W: Of course it depends on what you want, but we do subscribe to a large number of journals. Since you' re working on such a broad topic, you'll probably have to do a lot of digging. It may take some time, but I' m sure you'll be able to find many articles relevant to your topic. We also have quite a few newspapers on microfilm. M: I think I' ve come to the right place. How can I find out which journals you have? W: I can give you a list of all of them. But if you want to search by author or by subject, you can use one of the computers over there in the comer. Everything we have is seen them. M: What if I run across a reference to a research study that isn't available here? W: You can request any outside material just by typing your request into the computer. M: You mean you can get materials from other universities? W: Not only from other universities, but from virtually any public or private library in the United States. The only limitation is that outside materials cannot be checked out. (20)