单项选择题

A．To think out some difficult problems.
B．To do some cross-country running.
C．To finish a course in physical training.
D．To keep fit and healthy.
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单项选择题
A．Bring a great deal of useful experience to the university.B．Improve human relationships in the university.C．Bring a fear of aging among young students on the campus.D．Improve the reputation of the university.
A．Bring a great deal of useful experience to the university.
B．Improve human relationships in the university.
C．Bring a fear of aging among young students on the campus.
D．Improve the reputation of the university.
单项选择题
A．8 years.B．20 years.C．16 years.D．30 years.
A．8 years.
B．20 years.
C．16 years.
D．30 years.
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