第10题: [单项选择]Questions 23 to 25 are based on the conversation you have just heard. A. Giving a lecture. B. Discussing political science. C. Working on a science problem. D. Reading twentieth-century literature. 参考答案:D 答案解析:[听力原文] 23-25 M: Hi, Janet. Where were you at lunchtime I was saving a seat for you in the cafet