My grandma about her life now.[ ]
A. talks
B. is talking
C. talked
答案:B
坚硬不可移者为()
A.肉瘿
B.石瘿
C.血瘿
D.筋瘿
E.气瘿
在薄层鉴别中,鉴别黄酮类化合物时常用
A.硅胶G板B.聚酰胺板C.纤维素板D.氧化铝板E.纸层析