连续滴注肠内营养液的开始速度是（）

A.10～20ml／h

B.20~30ml／h

C.30~60ml／h

D.70~90ml／h

E.100ml／h

—I think Xiao Ming is the best student in our class.

— ____ [ ]

A. I think too      

B. I think not    

C. I think so        

D. I don't think