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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