上皮细胞间失去了连接，属于自身免疫病的疾病是()
A．类天疱疮
B．多形红斑
C．红斑狼疮
D．天疱疮
E．白塞病
参考答案：D
清肺止咳，降逆止呕用( )
A．款冬花 B．杏仁 C．枇杷叶 D．胖大海 E．马兜铃
No government can justly claim authority ______ it is based on the will of the people．
A．unless
B．after
C．so that
D．while
