Section B Directions: This section is to test your ability to understand short conversations. There are 2 recorded conversations in it. After each conversation, there are some recorded questions. The conversations and the questions will be spoken only once. When you hear a question, you should choose the correct answer from the 4 choices marked A, B, C, and D. 听力原文：W1: Yes, ma'am. Can I help you? W2: Yes, I'd like to exchange this sweater. W1: What seems to be the matter? W2: Well, you see, I got this as a birthday present, but it's the wrong size. W1: Do you have the receipt? W2: Yes. W1: Could I see it, please? W2: Well, here you are. W1: What size do you want? W2: Just one size larger. 6．What does the buyer want to do? 7.What does the saleswoman see? (6)