【答案解析】[听力原文]17-20 M: Dr Brook, I just don't know what's wrong with me. I always feel tired and weak. My wife finally persuaded me to visit you to find out what the trouble is. W: From what is written here I can see that you have a very bad cold three years ago and that you also had a small operation last year. Did you have any bad effect after that? M: Well, I don't remember. W: For example, bow long did you stay at home each time you were ill? M: Just a couple of days, but about six months ago I was home for about two weeks with a cold or something. W: Did you see a doctor at that time, or did you just stay at home? M: No, I didn't see a doctor. When I began to feel better, I returned to work. W: And when did you start feeling so tired again? M: It must have been about ten days ago. When I came home from work one night, there just didn't seem to be any reason to go back the next day. W: Well, it sounds as if your problem may be the kind of work you do. The test I just made doesn't show anything really wrong. But I would like to make some further tests in the hospital. M: That's fine with me. W: All right. You Can check tonight and I will make the tests tomorrow morning.
男士第一段话中即指出：I always feel tired and weak，即他总是感到疲劳和虚弱，这就是他来看医生的原因。
单选题
When did the man return to work the last time he was ill?
【正确答案】
A
【答案解析】第四轮对话中男士回答女士在前一轮对话中的提问时说：When I began to feel better, I returned to work，即他感到好一点就回去上班了。
单选题
What does the doctor think his problem is?
【正确答案】
B
【答案解析】在倒数第二轮对话中，女士(医生)的第一句话即推测说：your problem may be the kind of work you do，也就是说她认为男士的问题出在工作上。