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        1. A cat, ______ it is a white one ______ a black one, is considered to be a good cat as long as it can catch mice.
          A.both; andB.not only; but also
          C.either; orD.whether; or
          D

          試題分析:句意:一只貓不管是白貓還是黑貓,只要抓住了老鼠就是好貓。A……和……都B不僅……而且。C或者,或者D不管,還是,根據(jù)句意及結(jié)構(gòu),故選D。
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