China has produced ___ this year as it did in 2002

问题描述:

China has produced ___ this year as it did in 2002
A weice steel as much
B twice as much steel
为什么要选B

we should do as much exercise as possible的类似用法,固定结构啦~中国今年生产的钢铁是它在2002生产的两倍