【单选题】听力原文:M: Catherine is taking a microbiology course this semester. W: Should she be taking that this year? Q: What does the woman imply that Catherine should be doing? (19)
【单选题】听力原文:(A) All of the people are walking in the same direction. (B) One of the men is taking off his glasses. (C) There are trees growing along the road. (D) They are running in a line.