245.

W: It was exactly two years ago that we moved to this town. You started working on your degree, and I started working down at the lab.

M: It seems like only yesterday. I suppose that I am so busy that I don't even notice how time passes.

W: I'd expect the opposite. I mean, the way you've been studying, working on experiments and writting dozens of papers. It might seem more like four years than two.

M: Haven't you ever noticed how time seems to crawl when you have nothing to do? But how time flies when you are busy with what you really like to do?

W: That's true. Those days when there was not much to do at the lab didn't ever seem to end.

M: Just wait a little longer. As soon as I finish my degree, we'll open our own chemistry lab.

答案解析：

(1) 正確答案為A。根據It was exactly two years ago that we moved to this town. 我們搬來這個鎮上已經整整有兩年的時間了。再結合整個語境，可推知，二人應為夫妻關系，因此A項正確。

(2) 正確答案為B。根據You started working on your degree. 你開始攻讀學位。可知，男子目前是名學生。因此B項正確。

(3) 正確答案為A。根據As soon as I finish my degree, we'll open our own chemistry lab.我一拿到學位，咱們就可以開一間自己的化學實驗室了。可知，二人打算開一間實驗室，因此A項正確。