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Nature reserves are very important for preserving many animals and plants, which would _______ run the risk of becoming extinct


  1. A.
    otherwise
  2. B.
    therefore
  3. C.
    though
  4. D.
    instead
A
试题分析:A否则,要不然;B因此;C然而;D代替,而不是;句意:对于保护很多野生动植物来说自然保护很重要,要不是这些动植物会有灭绝的危险。根据句意说明A项符合上下文。
考点:考察副词词义辨析
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