单项选择题

If you work hard you will soon catch ______ the other students.

A．out of
B．on to
C．up with
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A．asB．likeC．for
A．as
B．like
C．for
单项选择题
Which is true about the Maryland Science Center
A．Visitors can play and learn at the same time.
B．It helps visitors travel to other countries.
C．It can be visited 24 hours a day.
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