问题
选择题
After the mew technique was introduced ,the factory produced ____in 2001 as the year before.
A．as twice many machines
B．twice many as machines
C．as many machines twice
D．twice as many machines
答案
答案：D
表示倍数.分数.百分比的词应放在as…as或形容词的比较级或the n of之前，故选D。