第24题: [单项选择]Questions 23 to 25 are based on the conversation you have just heard. A. They are friends. B. They are counselor and client. C. They are teacher and student. D. They are colleagues. 参考答案:C 答案解析:[听力原文]23-25 W: Richard, what’s that under your paper M: What’s what W: Lift up your arm.