问题
选择题
The number of the workers in this factory 300, 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
答案
答案：C
考察固定结构。Increase to增加到…表示结果；increase by…增加了…表示程度；结合句意可知C正确。句意：这家工厂的工人数量增加到了300，就是说增加了百分之20.