下列主要能概括药物的药性和作用的是（）
A.归经
B.四气、五味
C.升降浮沉
D.毒性
E.配伍、七情
参考答案：B
Last year the well-known actress did _______ she ________ help the poor children in the mountain village.
A．what; could to
B．everything; could
C．all; could
D．that; could to
“素烧鸭”是一款冷菜，为防止改刀时松散，可采用（）的方法。
A.压制数小时
B.叠紧排齐，自然收紧
C.用绳捆扎
D.少放汤汁
