. I look on it as a good opportunity to ________ fresh skills and broaden my knowledge.

A．acquire

B．require

C．accept

D．receive

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