----Must I do well in all the subjects, Mum?----Sure, baby! As an old saying goe

题干

----Must I do well in all the subjects, Mum?
----Sure, baby! As an old saying goes, knowledge is _________.

A．command

B．effort

C．power

D．energy

上一题下一题 0.85难度单项选择更新时间:2012-12-10 07:12:18

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