A、Take the slips and make the payment. B、Go to the lab first. C、Go to the CT room first. D、Go to the nurse station first. A根据医生

W: What seems to be the problem?
M: My throat feels swollen. I keep on coughing. And I feel feverish as well.
W: How long have you been like this?
M: For about a week. At first I thought I had a cold. I took some medicine for cold, but it did not work.
It has been getting worse.
W: Do you cough up and phlegm?
M: Yes, a lot. It’s something yellow.
W: Would you lie down on the bed over there, please? I will examine you before I can give you any prescription.
M: Should I take off my shoes?
W: Yes, please, and unbutton your shirt as well. Hmm, your breath is low and I can hear moist rake over your left lung base. I am afraid you have to take a blood test and CT.
M: How should I take the examination?
W: You should take these slips for the examination and go to pay the fee at the cashier first and go to the laboratory and CT room for blood test and CT respectively.
M: All right. Thank you doctor.
W: Your results show that you have a mild case of pneumonia; you need to have intravenous antibiotics, and I will prescribe you some pain-killers for the pain in your chest.
M: Are you going to admit me into hospital if I’ve to have intravenous antibiotics?
W: No, I prescribe you antibiotics, you collect them from pharmacy then go to the infusion room, where a nurse will put a cannula in your arm and give you the antibiotics in a bag of fluid.
M: What, today, now? Do I just have one dose of antibiotics?
W: No, you will need to come back again later today for another, and twice a day for two days.
M: Can’t I have oral medication? I really don’t want to have it intravenously.
W: Yes, you can. But it will take longer to cure your pneumonia if you take oral antibiotics. It is much more effective if you have them intravenously.
M: I’d rather have the tablets if you don’t mind.
W: OK, as your pneumonia is mild I will prescribe tablets for you. But if you do not feel better in three days please come back to see me, but remember you will need a register again first.
M: OK, doctor, thanks very much. I appreciate your help. Will the nurse tell me where the pharmacy is?
W: Yes, she will. Please make sure you take the whole course of antibiotics, and rest at home till you feel better.
M: OK, thanks.
Questions 16-20 are based on the passage you have just heard.
16. What did the man do before he came to see the doctor?
17. What does the doctor suggest the man do?
18. What should the man do first before doing examinations?
19. What is the man’s problem according to the results?
20. What is true about the man’s medication?