After introducing the new technique, the automobile factory produced cars in 2010 as the year before.
A. twice as
B. twice as much
C. twice more
D. twice as many
网友回答
A. twice as
B. twice as much
C. twice more
(答案→)D. twice as many
解析：考查倍数表达。句意：引进新技术之后，汽车厂在2010年生产的汽车是头一年的两倍。后文有个as，所以选项中要选带一个as的，cars用many修饰，所以答案选D。