单项选择题

A．Most professors are not very committed to the program.
B．Some professors may go elsewhere to teach.
C．Some professors treat students badly.
D．The quality of professors is not satisfactory.
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单项选择题
A．Grain growers.B．Operators of rural passenger shipping business.C．Taxi drivers.D．None of the above.
A．Grain growers.
B．Operators of rural passenger shipping business.
C．Taxi drivers.
D．None of the above.
单项选择题
The word foster (Line 3, Para. 2) means ______ .
A．force
B．promote
C．educate
D．eliminate
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