单项选择题

You should ______ the wheels of your bicycle once a month.

A．fabricate
B．confiscate
C．lubricate
D．syndicate
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单项选择题
History has demonstrated that countries with different social systems and ideologies can join hands in meeting the common challenges to human ______ and development.
A．evolution
B．survival
C．rivalry
D．dignity
单项选择题
Rather than being openly confrontational with his parents, he just quietly -- and perhaps unconsciously -- refused to ______ with their demands.
A．comply
B．adhere
C．coincide
D．concede
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