275.
M: Hot today, isn't it?
W: Yes, it is. I wish that it would rain and cool off.
M: Me, too. This is unusual for May. I don't remember it ever being so hot and dry in May before.
W: You are from Florida then?
M: Not really. I was born in Chicago, but I've lived here for ten years now.
W: My mother and I have just moved here from Indiana.
M: Pretty cold in Indiana, isn't it?
W: Yes. That's why we moved. But we didn't know that it would be so hot here. We should have gone to California. Do you think that we've missed the bus, by the way?
M: No. It's alawys a little late.

答案解析：
(1) 正确答案为B。根据I was born in Chicago.我出生在芝加哥。可知，男子出生在芝加哥，因此B项正确。
(2) 正确答案为B。根据男子问Pretty cold in Indiana, isn't it?印第安纳州非常冷，是吧？和女子答Yes. That's why we moved. But we didn't know that it would be so hot here.对啊，这就是我们为什么搬家的原因。可是我们不知道这里这么热。可知，女子和她母亲搬到这里来的原因是这里暖和，因此B项正确。
(3) 正确答案为A。根据Do you think that we've missed the bus, by the way?顺便问一句，我们是不是错过公交车了？可知，二人正在公交车站等车，因此A项正确。