The production of the factory has grown to in 1999.
A. twice as it was
B. twice what it was
C. as twice as it was
D. twice that it was
网友回答
A. twice as it was
(答案→)B. twice what it was
C. as twice as it was
D. twice that it was
解析：考查倍数的表示方法。句意：工厂的产量是1999年的两倍。倍数放在比较级和as...as的前面，不能放在as...as之间，排除C；that在名词性从句中不作成分，而was缺少表语，排除D；as不引导宾语从句，排除A。用what作was的表语。故选B。