实证经济学的研究方法:英语题目

来源:百度文库 编辑:神马品牌网 时间:2024/08/27 11:06:00
1.The nurse's job is ______the sick people.
A.look afetr B.looked after c.to looking afetr D.to look afetr

选D

选B

选d 啊 is to do sth