最少见的变性
A．宫颈粘液结晶B． * * 脱落细胞学检查C．分段诊刮D．宫颈涂片E． * * 镜检查
参考答案：B
By the time he arrived at the airport, the plane .
A．has taken off
B．was taking off
C．would take off
D．had taken off
对党员的纪律处分应经过哪些程序？
