15.
W: Let's catch the bus to university today.
M: No way. It's too slow. I want to catch a cab instead.
Q: What's the probable relationship between the two speakers?
正确答案：D
解析：女士说：“今天我们乘公共汽车去大学吧。”男士回答：“不，那太慢了。我想坐出租车。”说话人应该是大学同学，故选D。由选项可知，本题是问说话人身份的场景题，
要根据听到的关键词判断答案。
16.
W: Is that optional course as hard as everybody says?
M: Exactly, even worse, believe it or not.
Q: What does the man say about the course?
正确答案：C
解析：一般疑问句题，yes类回答，yes后面是答案，even worse=more difficult。A项和D项都是拿听到的“hard”来做文章。
