All the doctors in the hospital insisted that he________ badly wounded and that he________ at once.

A．should be; be operated on

B．were; must be operated on

C．was; should be operated

D．was; be operated on

普萘洛尔的药理作用特点是（）

A.有内在拟交感活性

B.口服生物利用度个体差异大

C.无膜稳定作用

D.以原形经肾脏排泄

E.促进肾素的释放