——How about calling on many _____ volunteer to help those trapped in Yushu county?

——I can't think of ________ better idea.

A．a ; /

B．/, a

C．a ; a

D．/; /

急性肾衰竭时循环系统症状是（）。

A.心律失常

B.心力衰竭

C.心肌病变

D.高血压

E.肺水肿