城市劳动力供给受哪些因素影响？（）
A.城乡人口再生产
B.劳动适龄人口的规模
C.劳动力参与率
D.劳动力流动
参考答案：A, B, C, D
工程量清单表中项目编码的第四级为().
A、分类码
B、具体清单项目码
C、节顺序码
D、清单项目码
― I don't think the man enjoys his life, ______?
― No, he can't. That poor man. [ ]
A. does he
B. do I
C. doesn't he
D. do you
