【正确答案】 A

【答案解析】[解析] 65-67
M: I would like to make a reservation for a flight to Las Vegas for March 8th.
W: Sorry, but all flights to Las Vegas are fully booked on March 8th. Actually，our flights to Las Vegas are all booked up through May 12th. It's the spring break season，you know. There are some business class seats available for the morning of March 9th.
M: That's too bad. Could you put my name on the waiting list on both March 8th and 9th? I have to attend a conference in the afternoon of March 9th. By the way. how much is the business class?
W: $320 dollars, sir. It's twice as expensive as an economy seat.
[词汇]
Our flights to Las Vegas are all booked up through+时间……为止，到拉斯维加斯的机票全部都预订完了
There are+商品/服务+available现在有商品/服务提供
初级问题
题目中出现了很多个日期，一定注意不要混淆。句子中有originally出现，这个词的意思是“原来打算……，(随着对话的进行)后来有所改变”，所以解答问题的线索经常会在对话的开头部分出现。本题也是这样，正确答案是男子的第1句话中出现的March 8th。

【正确答案】 A

【答案解析】初级问题
把握了题目的状况是预订飞机票，男子旅行的目的地会在男子说的话中出现。在讨论有关机票日期的同时，男子在第2段话中说出了为什么去拉斯维加斯，是要去参加一个会议。选项中把attend换成了participate in，把conference换成了meeting来表达相同的意思。

【正确答案】 A

【答案解析】中级问题
本题是需要在理解整个对话的基础上作出推测的问题类型。因为正在放春假，飞机票都预订满了，男子看上去不太会改变日期，多支付一些费用搭乘自己想要的那一天的航班的可能性比较大。可以预计男子可能会多支付320美元买商务舱的票。