Question

5. The number of the workers in this factory300,that is to say,it 20% .

   A. has increased by;has increased to

   B. have increased to;have increased by

   C. has increased to;has increased by

   D. have increased by;have increased to

Answer 1

5. C

5. C解析：由g语可知谓语动词用单数；increase to 表示“增长到 ”；increaseby表示“增长了……”。根据句意可知 应选C项。