听力原文:M: Will you please show me that notebook? W: Certainly. M: How much is it? W: Twenty-one yuan and fifty fen. M: Hm. It's certainly nice, but it's a bit more than I was thinking of paying. I don't think I'll take it. W: How about that size? It's also very good and much cheaper. M: Let me see one. W: This size is ten yuan and ninety fen. M: That's very reasonable. I'll take it then. (12)