Water is vital _______every living thing ______, without which the world would be a dead place.


  1. A.
    to keeping; alive
  2. B.
    to keep; living
  3. C.
    to keeping; lively
  4. D.
    to keep; alive
A

試題分析：考查固定用法，be vital to意思“對……極端重要”， alive意思“活著的”， lively意思“活潑的”，keep sth doing/adj表示處于某種狀態(tài)，句子意思“水對于每一個活的東西保持生命極端重要，沒有這些世界將成為一個死了的地方”，所以選A
考點：考查固定用法be vital to意思“對……極端重要”，句子 without which the world would be a dead place.是個關(guān)系代詞which引導(dǎo)的賓語從句。
點評：注意固定句型
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