题目内容

“A mysterious illness, referred to as ‘SARS’, has been brought under control, ”the government said Wednesday, “ ________ no cause of it has been made public.”


  1. A.
    when
  2. B.
    that
  3. C.
    though
  4. D.
    because
C
though引导一个让步状语从句,放在句末.
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