17.
M: I'd like to send this package by rapid service.
W: Sure. That will cost $2.5 for the postage and another $1.15 for the rapid service.
Q: How much will it cost the man to send the package?
正确答案：D
解析：数字题一般要运算，another意味着本题做加法。2.5+1.15=3.65，即D。

18.
W: Could I see a pair of cotton shoes like the brown ones in the window? I need a size six and a half.
M: I'm sorry, but that style doesn't come in half size. Can I show you a six or a seven?
Q: Where does the conversation most probably take place?
正确答案：A
解析：解答地点题的重点在于理解相应的地点名词所确立的语境，以及在该语境下的关键词。shoes, window和size这些关键词说明是在买鞋。