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11.The UN helps protect human rights and works _____ international laws.(  )
A.improveB.to improveC.improvingD.improved

分析 联合国帮助保护人权并发挥改善国际法的作用.

解答 答案:B
句中and连接并列谓语helps和works;improve表示work的目的,在句中作目的状语.故选B.

点评 动词不定式是非谓语动词是一种,表示未发生的动作,用法较多.常用来作定语,主语,宾语,补语,状语等.本题中用来作目的状语,相当于in order to为了.

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