He witnessed Yushu, a county in Qinghai Province hit by _____ unexpected earthquake, but the Yushu people haven’t lost heart, vowing to turn their homeland into _____ more beautiful Yushu.

A．a; a

B．an; the

C．the; a

D．an; a

急性肾功能衰竭少尿或无尿期，需紧急处理的电解质紊乱为（）。

A.低氯血症

B.低钠血症

C.低钙血症

D.高钾血症

E.高镁血症