听力原文：W: When is the library open on Sunday?
M: From 9 A.m. to5 p.m.
Q: How long is the library open on Sunday?
(12)
A.7 hours.
B.14 hours.
C.10 hours.
D.8 hours.

A.m.
B.m.
Q:
C.7
D.
B.14
E.
C.10
F.
D.8

【参考答案】

D
解析：本题考的时间计算问题，图书馆从上午9点开到下午5点，一共应是8小时，所以选D。