【正确答案】 C

【答案解析】原文：W: Good morning. May I help you?M: (6) Yes, I’ d like to check out now. My name is John White, Room 502. Here’ s the key. W: Wait a moment please, sir. Here ’ s your bill. Would you like to check and see if the amount is correct? M: What1 s the 120 yuan for?W: That’ s for the phone calls you made from your room. M: Okay. (7) Can I pay with traveler’ s checks? W: Certainly. (8) May I have your passport, please? M: Here you are.W: Could you sign each check here for me? M: Sure. W: Here are your receipt and your change, sir. Thank you. M: Thank you. Goodbye. 6. What is the man doing according to the conversation?7. How does the man pay?8. What does the woman ask the man to show?问题问的是“男士如何支付"。根据对话内容可知，男士询问自己是否可以用旅行支票付款，女士说可以。故选C。