― It is reported that Americans eat too much protein each day.

―They eat ______as they actually need.

A．as twice much

B．much as twice

C．as much twice

D．twice as much

基于需求驱动原理的供应链运作模式是一种（）运作模式，与传统的推动式运作模式有着本质的区别。

A.顺式拉动

B.顺式推动

C.逆向拉动

D.逆向推动