鉴定中药质量的纯度和品质优良度的首选方法是（）
A.来源鉴定
B.性状鉴定
C.显微鉴定
D.理化鉴定
E.生物鉴定
参考答案：D
You can go to Nancy. She is always .[ ]
A. ready to h elp others
B. ready to help the others
C. ready for help others
D .ready for help the others
梗丝线切后的梗丝有那些质量要求？
