People in many countries were sad at the news ______ Samaranch, Lifetime Honorary President of the Olympic Committee, died at 89 on April 21st.

A．which

B．that

C．what

D．when

诱发肾功能不全加重的最常见因素是（）。

A.感染

B.高血压

C.低钾血症

D.脱水

E.贫血