【正确答案】 D

【答案解析】[听力原文]
W: Hi, John!
M: Oh, Hi, Laura. What're you doing here?
W: Uh... I'm usually here on weekends. It's my dad's shop. So... you're looking for a bike?
M: Yeah. Now that the weather's warming up, I thought I'd get some exercise—instead of taking the bus all the time.
W: Well, you came to the right place. Do you know what you'd like?
M: Well, I don't want a racer or a touring bike or anything. Mostly I'll just be using it to get me back and forth from work.
W: How far is that?
M: About four miles.
W: Are there a lot of hills on the way?
M: Some, I guess. But... uh... maybe I should just tell you up front that I've only got a hundred and fifty dollars. Can I get anything decent for that?
W: Well, you're not going to get anything top-of-the-line—but we do have a few trade-ins in the back that're in good condition.
M: That sounds good.
W: And you're right, for the kind of riding you're going to be doing, the most important thing is comfort. You want to make sure it's the right height for you. Follow me and I'll show you what we've got.

Why is Laura at the bicycle shop?

要回答这道题，考生需要听懂Laura的回答。她说她周末一般都在这里，这是她父亲的店，可见，她是在帮父亲照顾生意。与之意思最接近的只有选项D。这道题也可以使用排除法。对话中W的话表明她是一个店员的角色，因此可以排除前三个选项。

【正确答案】 B

【答案解析】[听力原文]
Why does John want to buy a bicycle?

这是一道细节题。John想买自行车的理由是天气变暖和了，他准备锻炼锻炼身体，不再每天坐公共汽车上下班了，正确答案应该是B。后面M说“Mostly I'll just be using it to get me back and forth from work.”也可以帮助锁定正确答案。

【正确答案】 A

【答案解析】[听力原文]
What does Laura suggest that John do?

这道题的关键在于掌握“trade-in”是指“折价的旧物品”，也就是说，Laura建议他买旧自行车，因此正确答案是A。不过，如果考生不知道trade-in这个词的意思，也可以用排除法找到正确答案。

【正确答案】 A

【答案解析】[听力原文]
What does Laura say is the most important thing about a bike?

Laura认为自行车最重要的是舒适，并接着解释说，也就是必须高度合适，因此正确答案是A。up front在这里的意思是“坦率的”。