听力原文：W: Sir, you’ve been using the online catalogue for quite a while. Is there anything I can do to help you？
M: Well, I’ve got to write a paper about Hollywood in the 30s and 40s, and I’m really struggling. There are hundreds of book, and I just don’t know how to begin.
W: Your topic sounds pretty big. Why don’t you narrow it down to something like… uh, the history of the studios at that time.
M: You know, I was thinking about that, but more than 30 books come up when I typed in “Movie Studio”.
W: You could cut that down even further by listing the specific years you want. Try adding “1930s” or “1940s” or maybe “Golden Age”.
M: “Golden Age” is a good idea. Let me type it in… Hey, look, just 6 books this time. That’s a lot better.
W: Oh… another thing you might consider… have you tried looking for any magazine or newspaper article？
M: No, I’ve only been searching for books.
W: Well, you can look up magazine articles in the Reader’s Guide to Periodical Literature. And we do have the Los Angeles Times available over there. You might go through their index to see if there’s anything you want.
M: Okay, I think I’ll get started with these books and then I’ll go over the magazines.
W: If you need any help, I’ll be over at the Reference Desk.
M: Great. Thanks a lot.
(20)
A．Searching for reference material.
B．Watching a film of the 1930's.
C．Writing a course book.
D．Looking for a job in a movie studio.
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