Miss Li _____ as a secretary for five years in the company, and now she is general manager of it.[ ]

A. has served

B. had served

C. served

D. serves

对产妇进行母乳喂养指导，内容错误的是 （）

A.每隔3小时哺喂一次，一次1小时

B.哺喂后将新生儿竖抱拍背

C.出生后6个月纯母乳喂养

D.两侧 * * 交替哺乳

E.婴儿含接不良可以造成产妇 * * 皲裂