听力原文：W: can I help you？M: Yes, I'm looking for a book on the presidential election sys

听力原文：W: can I help you？

M: Yes, I'm looking for a book on the presidential election system in the United States.

W: Well, all of our textbooks are arranged by subject and course number in the back of the store. Is this a required text for one of the University's political science courses？

M: No, it isn't. I've already looked through all the political science books in the back, but the ones I saw only had a few pages, at most, on the topic.

W: How about the paperback section？ There may be some thing there.

M: Okay.

W: Or better yet, you should try looking in Books in Print.

M: I've never beard of that. What is it？

W: It's an index that lists all of the books currently available from publishers. If you have a specific book in mind, you can look under the author's last name.

M: But I don't.

W: Then look directly under your subject, presidential e lections.

M: What happens if I find a book I want？

W: Well, if it's not in stock, we can order it for you.

(20)

A．A novel about a president.

B．A political science book.

C．A listing of election results.

D．A text for one of his courses.