Chinese students usually spend ______ the students of the US studying in their f

题干

Chinese students usually spend ______ the students of the US studying in their free time.

A．twice as many hours as	B．as twice many hours as
C．twice hours as many as	D．as many as twice hours

上一题下一题 0.85难度单项选择更新时间:2010-07-11 09:00:42

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