A、Teacher and parent. B、Husband and wife. C、Doctor and patient. D、Father and daughter. A本题的问题关键词是who。问的是两人的身份，对话中提到了daughter，对话

M: We are both free this afternoon. Shall we go surfing?
W: Go surfing? I’ve never surfed before, but it sounds really cool. What time shall we meet?
M: Let’s make it half past three.
Q: Are they going surfing this afternoon?

M: Miss Smith, my daughter Cindy can’t go to school today. She didn’t feel well and was sent to hospital last night.
W: I am sorry to hear that. How’s she today?
M: Much better. And she will be back to school tomorrow.
Q: Who might the two speakers be?