A.
B.
C.
参考答案:A
解析: 表示年龄用“years old”。
—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