阴部瘙痒，带下色黄臭秽，舌红苔黄腻，脉弦数，其证候是（）

A.肝郁气滞证

B.肝火炽盛证

C.胆郁痰扰证

D.肝胆湿热证

E.湿热蕴脾证

This kind of snake won't hurt you because it is           . [ ]

A. helpful

B. harmful

C. helpless

D. harmless