以奖励手段扩大人们行为选择的范围，激励人们向着政策主体希望的方向努力的政策是（）。

A.积极型政策

B.能动型政策

C.鼓励性政策

D.竞争型政策

According to some scientists, the computer will do much harm to people's health as smoking and drugs do.

A．does much harm ... smoking

B．will do as much harm ... cigarettes

C．will be doing as much harm ... smoking

D．does as much harm ... cigarettes