On the contrary, I think it is Truman, ______you, 

to blame.

A．more than; are

B．less than; who are

C．rather than; that is

D．rather than; is

当井口压力没有达到最大允许关井套前（）提前放掉一部分压力。

A.可以

B.必须

C.严禁

D.根据情况