选择下列句子完成下面对话。（共5小题，每小题1分）
A: Good morning. What can I do for you?
B: I want a mobile phone, but I don’t know which one to buy.
A: ________ 小题1: Which brand do you like best, an HTC, a Nokia or an iPhone 5?
B: I know little about them. Which one sells best?
A: Mm! ________ 小题2:
B: How much is the iPhone 5?
A: ________ 小题3:
B: Oh, they are too expensive. I want the one which is the newest but not too expensive.
A: What about this one? It works well and is very cheap.
B: ________ 小题4:
A: 1,000 yuan.
B: Is there any discount ( 折扣)? How about 800 yuan?
A: ________ 小题5:
B: OK, I’ll take it.
小题1:D
小题2:F
小题3:B
小题4:A
小题5:C
题目分析：短文大意：本文主要记述了一段发生在手机商店的顾客和售货员之间的对话，顾客想买一个既便宜又好用的手机在售货员的介绍下终于买了一个900元的手机。
小题1:根据本句Which brand do you like best, an HTC, a Nokia or an iPhone 5。可知上句应该是我们有各种各样的手机，可知选D
小题2:联系前文，Which one sells best那种买的最好可知下文是iPhone 5是年轻人中最喜欢的，故选F。
小题3:联系前文，iPhone 5的价格是多少可知下文是回答价格的。可知选B
小题4:联系下文，1,000 yuan.可知上文是问价格。可知选A。
小题5:联系上文，How about 800 yuan?可知下文是商店的价格只能要900元，可知选C.