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.
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单项选择题
A．It uses nuclear energy.B．It rests on a cushion of professional air.C．It flies over magnetically activated tracks.D．It uses a device similar to a jet engine.
A．It uses nuclear energy.
B．It rests on a cushion of professional air.
C．It flies over magnetically activated tracks.
D．It uses a device similar to a jet engine.
单项选择题
A．Children who have private music tutors.B．Children who are 8 or older.C．Children who are between 5 and 7.D．Children who are well-educated.
A．Children who have private music tutors.
B．Children who are 8 or older.
C．Children who are between 5 and 7.
D．Children who are well-educated.
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