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Good ways of doing things mean saving time, and ________ it is important for us to find them.

  Astill

  Bhowever

  Ctherefore

  Dotherwise

 

答案:C
解析:

这里应该填连词,是连词的选择。still是副词;however无论如何;therefore因此;otherwise否则。只有C符合题意。

 


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