A、Biology. B、Photography. C、Swimming. D、Painting. A细节题。从女学生的第四句话中得知这是有关生物课的到校外进行的一次实地旅行考察。

W: Hi, Peter.
M: Judy, I haven’t seen you in weeks. Where have you been.?
W: In Florida.
M: What? Vacationing while the rest of us have been studying on campus in the February cold.
W: Not exactly. I spent most of my time underwater.
M: I don’t understand.
W: I was on a special field trip. I went with my marine biology class.
M: So you went Scuba diving, what were you looking for, sunken treasure?
W: You might say so. The sea is full of treasures, ’all kinds of strange fascination things.
M: Oh, how wonderful it is.
W: Yeah, by concentrating, I was able to see the outlines of lots of different plants and animals under the sea. In fact, our professor even took photographs of small oceanic snails.
M: That sounds like a interesting trip. But I think if I’d been in Florida in February, I’d much rather spend my time just swimming and lying ,in the sun.