— Let me see. We in 2008, that is, for 7 years.
A:have you been married; have married
B:have you got married; got married
C:have you been married;got married
D:did you get married; married
①实践具有客观物质性
②在实践中检验和发展真理
③认识具有反复性、无限性和上升性
④认识对实践具有反作用
俄罗斯大河很多,除伏尔加河以外航运价值都不大,最重要的原因是( )
若m<n<0,则x>2mx>-2nx<2n的解集为____ .
观察下面两幅漫画,回答下列问题: