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        1. I don’t know ____ or not he is right.

          A.thatB.what
          C.ifD.whether

          D

          解析試題分析:句意:我不知道他是否是對(duì)的。whether or not,是固定搭配,是否。結(jié)合句意,故選D
          考點(diǎn):考查連詞的用法。

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