15.
M: Hello! I'm a senior student. Can you tell me whether this reference room is only for faculty members?
W: No, it's also open to the postgraduates, and undergraduates can come too if they've got professors' written permission.
Q: What does the woman tell the man about the reference room?
正确答案：D
解析：细节题。预读选项可知，此问题有关使用某场所的权限。关键是听懂男士的身份senior student（大四学生）和女士说的“本科生如果有教授的书面批准也可以进入”，故选D。

16.
W: Let's talk about the preparations for the party.
M: Right. I think we really need to plan better and get things done in advance this time. Still remember what a mess it was at the last party?
Q: What do we know about the last party from the conversation?
正确答案：C
解析：细节题。预读选项可知，话题是讨论一次活动，问题是该活动效果如何。听音时注意抓听能体现正确选项意思的部分。关键是听懂男士说的“上一次聚会一团乱”，故选C。