—Who will teach you to swim this summer?              

—The twins,  because _         Lily      __  Lucy swim very well.          [ ]

A. both, and                  

B. neither, nor          

C. not only, but also                

D. either, or

患儿，18个月。腹泻时轻时重，已经3月，大便清稀无臭。夹不消化食物，有时便后脱肛，形寒肢冷，面色恍白、精神萎靡，睡时露睛，舌淡苔白，指纹色淡。治疗应首选（）

A.异功散合平胃散

B.附子理中汤合四神丸

C.保和丸合二陈汤

D.金匮肾气丸合人参乌梅汤

E.参苓白术散合理中丸