题目内容

15. It is a shock that a number of people infected with H7N9 and the number of them more than 100 already.

   A. were;have reached

   B. were;has reached

   C. was;reaches

    D. was; have reached

15. B

15. B解析:考查主谓一致和时态。句意:令 人震惊的是,许多人感染上了 H7N9流感

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