问题
选择题
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
答案
答案：D
题目分析：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。