听力原文：M: I'm doing some research into the French revolution. W: Oh, I did some on that last year. M: Why do you think I'm here! Could you suggest some interesting and useful sources? W: Sure. I found 'Voices from the French Revolution' by Henri Le Brun to be very useful, as well as extremely interesting and well written. M: What makes it so good? W: Well, he took extracts from diaries kept by people involved in the revolution. They re ally give you an idea of how it felt to live in France during that time. M: It sounds great. Why haven't I heard of it before? W: Well, it's only just been translated from the French original and none of the professors have added it to their booklists yet. I used the French version and translated passages myself. M: I see. I have been told that 'The French Revolution' by Victoria Jones is useful. W: I didn't find it very useful. I mean, there was nothing in it that you can't find else where. On the other hand, it's cheap, because it's available in paperback, and you can buy it at many bookshops. M: What about using resources available on the Internet? W: I used the Internet for my research, but I didn't find it very helpful. Many of the web sites were too small to contain much detailed information. Others provided links to other websites, but I found myself spending a lot of time following links and not finding much information. M: Yes, I've run across that problem myself. W: You could try the new edition of William Wright's book. It has the same title as Victoria Jones' book. It only came out a couple of months ago and I haven't seen a copy yet. A lot of it has been rewritten or consists of additional material recently found in French archives. M: Thanks for your help. I'll go to the bookshop and see if I can find the books you've recommended. W: when does your research have to be completed by? M: Well, the essay is due in six weeks, so I'll try to finish the research in four, giving me two to write the essay. W: Good luck! (23)