A、A teacher. B、An engineer. C、A repairman. D、A surgeon. D对话中女士问男士明天下午能否来参加她的生日聚会；男士说不能去，因为他明天下午3点要给一位病人做手术。由男士的话可知他是一位外科医生。

M: Mara, where were you yesterday evening? I expected to see you at the party.
W: Oh, I waited for you at the corner of the street. Then I looked for you at your home. But your grandmother said you were out.
Q: What do we know about the woman?

W: Can you come to my birthday party tomorrow afternoon, Uncle Smith?
M: I’d like to, Mary, but I can’t. I’ll be in surgery at 3 p. m. I’ll be operating on a patient then.
Q: What is the man?