听力原文：M: Come in, Madam．What's the matter with you?
W: I don't feel well, doctor．My head aches．And I have a sore throat (喉咙).
M: Do you have a fever?
W: I think so.
M: Well, let's see．Put this thermometer (温度计) under your tongue.
W: All right.
M: Yes, you have a fever．I want to take a look at your throat．Open your mouth.
W: What's wrong with me, doctor?
M: Well, you have the flu．I'll give you some medicine.
W: When should I take the medicine?
M: Every four hours．I want you to stay in bed and rest．And drink plenty of water．You should come again in a day or two.
W: Thank you, doctor.
Where did this conversation take place?