体外循环中最不常发生的问题是（）

A.低血压

B.高血压

C.高碳酸血症

D.低碳酸血症

E.电解质紊乱和代谢性酸中毒

I was _______ when I heard the _______ news!

A．disappointing; disappointed

B．disappointed; disappointing

C．disappointing; disappointing

D．disappointed; disappointed