After the new technique was introduced the factory produced tractors in 1998 as the year

问题补充：

After the new technique was introduced, the factory produced tractors in 1998 as the year before.

A. as many twice

B. as twice as many

C. twice as many

D. twice many as

答案：

A. as many twice

B. as twice as many

(答案→)C. twice as many

D. twice many as

解析：新的技术引进之后，工厂生产的拖拉机是1998年的两倍。 as…as 比较级的修饰语应该放在比较级的前面。