单项选择题

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单项选择题
Which is TRUE about the Maryland Science
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.
单项选择题
By calling (410)685-2370 we can get information about ______.
A．the night sky show
B．books and games
C．group price tickets
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