_           that she didn't do a good job, I don't think I am abler than her.        [ ]

A. To have said                

B. Having said        

C. To say                      

D. Saying

碱反流（胆汁反流）中，损伤食管黏膜的主要成分有（）。

A.结合胆盐

B.非结合胆盐

C.胰酶

D.胆汁酸

E.胃酸