题目内容

It ________ be difficult to discover the truth about Iraq War if people refused to consider anything that might be true.


  1. A.
    would
  2. B.
    can
  3. C.
    need
  4. D.
    should
A
考查情态动词与虚拟语气。根据本句后面的refused一词的时态可知是虚拟语气,因此选择此项。
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