铝能用于冶炼难熔的金属（如Fe、Mn等），这是因为铝具有如下性质 [ ]
A．两性
B．导电性好
C．熔点低
D．还原性及冶炼反应中放出大量的热
答案：D
— Did you see who the driver was?
— No, the car ran so fast ____ I couldn't have a good look at his face. [ ]
A. that
B. which
C. as
D. after
急性肾功能衰竭少尿期病人需要紧急处理的电解质紊乱是
A．低钠血症B．低氯血症C．高钾血症D．低钙血症E．高磷血症
