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学业达标测评l 知能达标演练
【基础巩固】
Ⅰ.单项填空
1.（2012·太原高二检测）The purpose of being here is to solve others’ problems,gain more knowledge and help others _____ .
A.in need B.in order
C.in general D.in common
2.—The plane is due to take off at 7：50a.m. from the airport.
—_____ we fail to arrive there in time?
