— What is it?
— a giraffe.[ ]
A. Its
B. It's
C. its
答案：B
P为∠AOB内一点，C在OA上，D在OB上，若PC=PD，则OP平分∠AOB．______．
属于反佐药功用范畴的是
A．减君臣药之毒B．缓和君臣药之峻C．监制君臣药之偏D．防止病重邪甚拒药E．助君臣药之力
