1型糖尿病的急性并发症是（）
A.白内障
B.急性肾衰竭
C.酮症酸中毒
D.非酮症高渗性昏迷
E.动脉粥样硬化
参考答案：C
The number of people invited to the party ____ fifty, but a number of them ____ absent for different reasons.
A．were; was
B．was; was
C．was; were
D．were; were
从中药材水煎液中萃取有效成分不能使用的溶剂有（）
A.氯仿
B.乙醚
C.乙酸乙酯
D.丙酮
E.石油醚
