听力原文：W: Hello, Im Jenny Johnson. How are you this morning？ M: Hello, Doctor Johnson.

I cant say Im feeling well. I have a pain and swelling in my knee. W: What kind of pain is it？ M: It is a dull ache. But sometimes the pain is constant, but it doesnt disturb my sleep. W: How long have you been feeling pain in your knee？ M: For about two years. But recently, I feel pain in my fingers. W: Have you had any swelling in your fingers？ M: Yes, a little. W: How about your wrist or toes？ M: No, only my knees and fingers. The pain becomes worse when the weather changes, like in cloudy or wet weather. W: OK. Let me see your blood test report first. M: How is it？ W: Not very bad. M: Do I have to have an operation？ W: No, I dont think so. Ill prescribe some Chinese traditional medicine. Also you need a treatment with rays below the red in the spectrum. M: Do I have to come here every day for the treatment？ W: Not every day. Can you come three days a week？ A course of treatment includes 20 times, so you have to come for the treatment 3 times a week for 7 weeks. M: How long does each treatment take？ W: 30 minutes. M: OK. Ill do that. W: When you are at home, use these hot water pads as often as possible. Put it over your knees. Try to avoid using cold water. M: OK. Thank you, Doctor. W: Youre welcome. Questions 13 to 15 are based on the conversation you have just heard. 13. What is the problem with the man？ 14. How does the woman treat the mans problem？ 15. What does the doctor suggest the man do at home？13．

A．She asks him to have injections.

B．She asks him to have an operation.

C．She asks him to have a good rest.

D．She asks him to have some herb medicine and a treatment with rays.