—Mum, I can' t do the washing on my own.  There is too much work.  

—All right.  I       you with it.   [ ]

A. will help

B. am helping

C. am to help

D. am going to help

胃酸的生理作用不包括______。

A．激活胃蛋白酶原，并为胃蛋白酶提供一个酸性作用环境
B．杀死进入胃内的细菌
C．促进胰液和胆汁的分泌
D．促进维生素B₁₂的吸收
E．促进钙和铁的吸收