熟料饱和比高,则熟料易磨性差。()
参考答案:错
_____ wonderful your English is! Can you tell me how to improve my English?
A.What
B.What a
C.How
D.How a
以下药物的入药部位为树脂的是
A.苏合香
B.乳香
C.雷丸
D.沉香