A、A lunch. B、A sleeping bag. C、A canoe. D、A tent. B细节题。四个选项都是名词，且都跟外出游玩有关。对话中谈到要自带换洗的衣服和睡袋，因此选项B正确。

W: [19] Hey Neal, now that the midterms are over, a bunch of us are getting away for the weekend to go canoeing. Do you want to come along?
M: Well, urn, it’d be great to get away, but I’ve never done it before.
W: None of the others have either except for me. I went once last fall. But there’ll be an instructor in each canoe the first day.
M: I don’t know.
W: Oh, come on. This is our last chance to take a break before finals. The scenery is beautiful, and if it gets too hot we can dive in whenever we feel like it. The river’s really calm this time of the year, no rapids to deal with.
M: That’s a relief. What would I have to bring?
W: Let’s see. Tom’s bringing food for the Friday night cookout for everyone. And the people who run the trip have tents set up and they supply food and drinks for all day Saturday. On the way back Sunday morning we’ll stop somewhere for breakfast. So, [20] you have to bring a bathing suit and a sleeping bag.
M: [21] Well, I do love camping and sleeping out. Where is this place?
W: Well, it’s about an hour and a half to the place where we meet the trip leaders. We leave our car there and they drive us and the canoes upriver to the place where we start canoeing.
M: And who’s driving us to the meeting place?
W: Well, I was hoping we could take your car. Mine’s in the shop again.
M: Oh, I see. It’s not me you want; it’s my car.
W: Don’t be silly. So what would you say?
M: Oh, why not!
W: [22] Great! I’ll give you a call when I find out when everyone wants to leave on Friday.