休息痢之所以缠绵难愈，多因 （）
A.正虚邪恋
B.瘀血阻滞
C.湿热留滞
D.传导失常
E.痰浊壅阻
参考答案：A, C, D
--- Do you love teaching, Miss He?
--- I fell in love with teaching in 2000. I ________ for twelve years by this summer.
A．will teach
B．would have taught
C．has been teaching
D．will have been teaching
平直度控制？
