I would gladly have paid ( ) for your dinner.

A．twice as much

B．two times as much

C．twice so much

D．as much as twice

习 * * 对载有中国游客的游艇在马来西亚失联作出重要指示，立即启动（），全力做好搜救工作，李克强就搜救工作作出批示。

A.预警机制

B.防范机制

C.应急机制

D.补偿机制