Thanks to the economical development, workers' wages have increased ________ as far as 200% in the recent three years.

A．for

B．to

C．up

D．by

造成山东暴雨的天气系统主要为低槽冷锋和气旋。其中，小范围暴雨主要是（）造成的；区域暴雨和大范围暴雨则以（）产生的较多。