单项选择题

A．Every ten minutes.
B．At twenty to one.
C．Every thirty minutes.
D．Once a day.
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单项选择题
For some students, the objective might be a D.
A．Y
B．N
C．NG
单项选择题
A．Most of them have a long history.B．Many of them are specialized libraries.C．They house more books than any other university library.D．They each have a copy of every book published in Britain.
A．Most of them have a long history.
B．Many of them are specialized libraries.
C．They house more books than any other university library.
D．They each have a copy of every book published in Britain.
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