题目解析:
在对话开头,教授就提到了因为有教授会议不能谈很久。谈话中学生又停下了一次,之后加快了谈话速度,可见谈话是因为其他事情而不能再进行下去。因此,正确答案选B。Student: Yeah, I know what you're saying. I guess I'll have to do some more research about... Professor: [interrupting and sounding rushed] Look, uh, why don’t you come back later on today? We can discuss your options in more detail then. Student: Ah, OK. Sure. Thanks.