The production of cars of this company has increased 300 000 a year but the sales of n

问题补充：

The production of cars of this company has increased 300, 000 a year, but the sales of new cars have fallen 20 percent this year.

A. to; with

B. to; by

C. in; to

D. in; by

答案：

A. to; with

(答案→)B. to; by

C. in; to

D. in; by

解析：考查介词：句意：这个公司的汽车的产量已经增加到每年300，000，但是新车的销售今年下降了20%。表示增加到：increase to，下降了：fall by，选B。