下列疾病属于Ⅱ型超敏反应的有()
A．血清病
B．输血反应
C．新生儿溶血
D．花粉症
E．免疫性血细胞减少症
参考答案：B,C,E
—Is Alice still performing?
—I'm afraid not. She is said _______ the stage already as she has become a director.
A．to have left
B．to leave
C．to have been left
D．to be left
高钾血症时心电图的改变有（）
A.P-R间期延长
B.QRS波幅增宽
C.T波高尖
D.U波
E.Q-T间期延长
