听力原文:M: Good morning. Are you Dr Hillbert? W: Yes, young fellow. What seems to be the problem? M: My brother has got the flu these days, and I am afraid I have been infected by him. I started to cough last night and I took my temperature this morning. It was 39 degrees. W: Unbutton your clothes, please. Well, the back, please. All right. Now open your mouth…Not very serious. I'll write you a prescription. If you follow the directions, you will soon be okay. Where does the conversation take place?