—Why do you like football?    

—Because I think it's ______.    [ ]

A. boring                

B. different    

C. difficult                

D. interesting

龙骨炮制后得以增强的作用是（）

A.清热除烦

B.收敛固涩

C.收敛制酸

D.清热燥湿

E.以上均不是