Question 15 is based on the conversation you have just heard.

W: (13) Could you please give me information on airfares from Miami to Bellingham, Washington? (14) We’d like to buy a good flight as cheaply as possible.

M: Let’s see. I want to advise you to pay the normal one-way economy class fare of $555. If you can fly on a Tuesday or Wednesday and buy your tickets at least 21 days in advance, I suggest you book a round-trip excursion flight.

W: But we may not need the return tickets.

M: That’s all right. Even if you don’t use them, you should be able to save $89 over the one-way fare. (15) Of course, I’d recommend early booking. You ought to try to reserve the “Super Saver” seats. There are only a few of them and they are 50% cheaper than the others.

W: That sounds like a good idea.

M: Wait, to save another hundred dollars or so, why don’t you book a flight to Vancouver, Canada?

W: But that’s farther than where we want to go.

M: I know, but you can take a bus from Vancouver back to Bellingham and still save money. And if you are travelling with children, you might be able to get a discount if you fly economy class. But they don’t get any discount. (15) But to take the advantage of the airline’s guarantee fare policy, you’d have to make reservations and pay for your tickets at least six weeks in advance. Try and begin the search for available seats...

W: No, thank you.

M: Excuse me?

W: I’ll call you back if we don’t decide to drive.

(15). What does the man advise the woman to do?

解析：推理判断题。问题为：男士建议女士做什么？根据对话中Of course I＇d recommend early booking（当然我推荐你早点订票）和But to take the advantage of the airline＇s guarantee fare policy, you＇d have to make reservations and pay for your tickets at least six weeks in advance.（但如果要享受航班确定的优惠政策，你必须提前六周预订并支付机票）可知，男士多次提到，女士需要提早订票，与D项（越早订票越好）一致。