Lydia: Well, are you looking for a periodical, a magazine, a reference book, a journal…?
Randy: I don't know…something about the War of 1812.
Lydia: Oh. Let me show you how to find a book. It's not that hard. You have to understand the catalog system. That's all.
Randy: You must have been here before.
Lydia: Oh yes. I'm a sophomore. I'm just taking Biology 108 because I didn't pass it last year.
Randy: Oh?
Lydia: Well, last year there was another professor, and he wasn't like this one. 聽寫本句，句末有句號
Randy: Well, maybe I can help you then.
Lydia: Thanks. I hope you can. But now, back to the catalogs…