A、He is a light smoker. B、He is a casual smoker. C、He is a heavy smoker. D、He is a moderate smoker. C细节题。男士说他每天抽50支烟，这一定是一个重度烟民

W: How are you now?
M: Not too good.
W: Are you still getting the pain?
M: Yes.
W: Well. The X-ray doctor found irritability and distortion of the duodenum although there was no actual ulcer visible on the X-ray. This does not necessarily mean that you have no duodenal ulcer. We have to decide the best way of treating it. There are two ways: medical and surgical. In young people, we try to avoid operations and we hope that medical means will help. Now, you did have a spell in hospital and it disappeared but now it started again. Has anyone in your family had an ulcer?
M: Yes, my father had one but it cleared up.
W: Well, this could be relevant as ulcers may run in the family. The other factors of course are smoking, worry and anxiety, irregular meals or overtiredness, overwork and stress. These all will effect an ulcer. Unfortunately, you have a lot of stress and worry at home, so I feel despite your being so young , putting you to bed for a few weeks isn’t enough. I’d like you to see Mr. Okes, He has a great deal of experience with ulcers. And if he feels an operation is the answer, I think we should take his advice. Now, have you managed to do anything about your smoking?
M: I smoke about 50 a day.
W: How often do you get the pain now?
M: Every day.
W: Have you lost time from work because of it?
M: Yes. Nowadays here and there.
W: Well, make an appointment to see Mr. Okes, and I’ll write to him and to your doctor.
M: Thank you, doctor.
16. What is the man suffering from?
17. To treat the disease mentioned in the talk, what would the doctor usually suggest a young patient do?
18. Which of the following is not mentioned as a contributing factor of the man’s disease?
19. What can we say about the man considering the number of cigarettes he smokes?
20. What is the man going to do after the consultation?