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高中英语选择题解析A great deal of communicating is performed on a per

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高中英语选择题解析
A great deal of communicating is performed on a person-to-person( )by the simple means of speech.
1.base 2.foundation 3.ground 4.basis
He was left in( )of the store when the manager was away.
1.charge 2.care 3.responsibility 4.management
The lack of invertment in new machinery has( )any rise in productivity.
1.worked out 2.refused 3.worked against 4.opposed
要分析一下,不要只给答案,每个选项最好都解释一下,谢谢~
高中英语选择题解析A great deal of communicating is performed on a per
asis
(on a ...basis:在...的基础上)
charge
(in charge of sth:主管sth)
worked against
(从这句看,因为缺乏对新设备的投资-investment,不是invertment,这妨碍了生产率的提高,work against-妨碍)