What ___________ pleasant surprise! I’ll tell Richard about it ___________ minute he comes home.

A．a; the

B．a; a

C．a; /

D．/; the

臁疮的病因病机是（）

A.久病气血亏虚，不能营养肌肤

B.气血失和，静脉阻滞，气血凝结

C.湿热下注，瘀血凝滞经络

D.气血失和，风寒痰浊凝聚

E.寒湿凝聚经络，闭塞不通，气血运行不畅