单项选择题

A．Broadening of horizon.
B．Promoting hobbies and interests.
C．Coping with social problems.
D．Personal improvement.
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campuses
单项选择题
A．Being almost completely covered by ice.B．Having no permanent human population.C．Its latitude and high elevations.D．Lack of forests and land animals.
A．Being almost completely covered by ice.
B．Having no permanent human population.
C．Its latitude and high elevations.
D．Lack of forests and land animals.
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