听力原文:M: Good morning. Say, do you know what the assignment is for our term paper in history? W: Sure. Weren't you in class on Monday? That's when it was given out. M: No, I missed that class. Was there a handout? W: No, the instructor just wrote the assignment on the board. M: Could I copy the assignment from your notes? W: You could, ff I had copied it all down; but I just wrote down the part that I wanted. M: Oh, no. W: You see, there were four choices of topics ior the term paper; but, when I saw them, I knew which one I wanted so I didn't copy the others down. M: Can you remember any o'f the others? W: Let's see. There was one about World War I, something about it, but I don't remember what, and there was one called 'the idea of progress in the nineteenth century.' M: And what was the last one? W: I can't remember. My mind is a complete blank. Maybe you can ask someone else. M: Yes, I will. Anyway, those are certainly broad topics. W: Yes, but you van focus on a special area within them. Which one would you take? M: Of course, I don't know what the last one is, but of these three, I think I'd take 'the idea of progress.' W: That's very abstract. M: Yes, but it's one of my interests and I've read a lot on the subject. I've never written a term paper on it though. W: Me neither. I haven't even read about it. Are you going to class on Wednesday? M: Yes. W: Maybe he'll write it on the board again. M: I hope so. Good luck with your paper. W: Same to you. (23) A.Three. B.Four. C.Five. D.Six.
A. M: B. M: C. M: D. W: E. M: F.' M: G. M: H. W: I.' W: J. M: K. W: L. W: M. M: N. W: O. (23) A.Three. B.Four. C.Five.
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B 解析:How many topics did the teacher give for the term paper?