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By improving reading skills, you can read faster and understand more of ________you once thought impossible to understand


  1. A.
    that
  2. B.
    whether
  3. C.
    which
  4. D.
    what
D
通过提高阅读技巧,你会读得更快而且更多理解你曾经认为不可能理解的东西。Of后是宾语从句缺少宾语,think sth impossible
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