听力原文：M: I had thought to drop in and find out exactly where I went wrong with this last paper. Do you remember marking it? W: Yes I do and... well, my impression was that you were trying to connect argument after argument without any grounds to support each assertion. M: But surely, you would agree that there simply isn't a lot of research out there to support my arguments. W: Ah, but research is only one way to back up an argument. M: May I know what other things I can use? W: For starters, your experiences. Experiences form. the basis for conclusion. Then perhaps try to look at analogies to see all that can help you. M: Are there any guidelines available on how I can use these experiences and analogies? W: I did give a whole lecture on it dated February 7. You were there; weren't you? M: Whoops, that was one that fell on the week I couldn't be there. I had to rush back home for personal reasons. W: Well, perhaps on your next paper you'll know that every argument you make needs legs or your paper will remain on the ground. M: Thanks, Mrs. Morse. It's all food for thought and you can bet the next one will have a solid base. W: That's the spirit. (1)