对话填空。

W: Sir, you've been using the online catalogue (目录) for quite a (1) w______. 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 books, and I just don't know (2) w______ to begin.

W: Your topic sounds pretty big. Why don't you narrow it down to something like…uh… the history of the 

      studios during that time?

M: You know, I was thinking about doing that, but more than 30 books came up when I (3) t______ in

      "movie studios."

W: You could cut that down even further by listing the specific (4) y______ you want. Try adding "1930s"

      or "1940s" or maybe "Golden Age."

M: "Golden Age" is a good idea. Let me type that 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 (5) m______ or newspaper

      articles?

M: No, I've only been (6) s______ 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 (7) t______ their indexes (索引) to see if

      there's (8) a______ you want.

M: Okay, I think I'll get (9) s_______ with these books and then I'll go over the magazines.

W: If you need any (10) h_______, I'll be over at the Reference Desk.

M: Great, thanks a lot.