【单选题】听力原文:M: Thanks for stopping by, Ann. I'd like to talk to you about a research project I thought you might be interested in. A friend of mine is working at Yellowstone National Park this summer... W: Y...
【单选题】听力原文:M: Thanks for stopping by, Ann. I'd like to talk to you about a research project that I thought you might be interested in. A friend of mine is working in Yellow Stone National Park this summer. ...