第11题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. It is very boring. B. It is very interesting. C. It is a waste of time. D. It is his responsibility. 参考答案:B 答案解析:[听力原文] W:Professor Li,I am so sorry to disturb you by asking you so many questions after class.Yo