If           mankind  is trying to find new places in         space to live and get new resources, it is fine.


  1. A.
    the; the
  2. B.
    /; /
  3. C.
    a; the
  4. D.
    the; a
B
解析：
考察冠詞。第一空mankind意為人類，泛指，不需要the，第二空意為太空，space意為太空的時(shí)候，前面用零冠詞，句意為，如果人類在努力尋找太空里居住的空間和尋找新的資源的話，那沒關(guān)系。
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