A、Colleagues. B、Schoolmates. C、Teacher and student. D、Doctor and patient. B问题问的是男士和女士的关系。对话开头，男士说自他们毕业到现在已经十年了，接着两人谈论了他们最近的工作状况。

W: Hello, Tom.
M: Hello, Amy.  It has been almost ten years since we graduated.
W: Yeah! Do you still teach in the medical school?
M: No. I worked there three years ago. What about you?
W: I work for the same hospital as ten years ago.
M :I know you are always devoted to what you do.
W: It is very kind of you to say that.
M: I am just telling the truth.
Q15. What’s the relationship between the man and the woman?
Q16. Where did the woman work ten years ago?