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        1. -- Be careful, _______ you will make mistakes in your exams.
          --I know that, Mrs. White. One can never be too careful.

          A.a(chǎn)nd B.or C.nor D.but

          B

          解析試題分析:句意:認(rèn)真點(diǎn),否則你在考試中會(huì)犯錯(cuò)。我知道了,懷特老師,一個(gè)人永遠(yuǎn)不可能太認(rèn)真的。and和, or或者,nor也不, but但是;根據(jù)語境可知不認(rèn)真就會(huì)出錯(cuò),故選B.
          考點(diǎn):考查連詞

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