第4题: [单项选择]{{B}}Questions 11 to 18 are based on the conversation you’ve just heard.{{/B}} A. A student. B. A reporter. C. A visitor. D. A lecturer, 参考答案:A 答案解析:[听力原文]
M: Are there any more questions on this lecture Yes, Mary.
W: Dr. Baker, do you think an i