英语三级B级
A．7 hours.
B．14 hours.
C．10 hours.
D．8 hours.
M：From 9 a.m. to 5 p.m.
Q：How long is the library open Off Sunday?
【答案】D
【考点】数字计算
【解析】本题考查的是时间计算的问题，图书馆从上午9点开到下午5点，一共应是8小时，故选D。
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