《中共中央关于制定国民经济和社会发展第十三个五年规划的建议》提出,实施一对夫妇可生育两个孩子政策。由“一对夫妇只生一个孩子”到“双独二孩”,由“单独二孩”再到“全面实施一对夫妇可生育两个孩子政策”,这表明( )
①实践具有客观物质性
②认识对实践具有反作用
③认识具有反复性、无限性和上升性
④在实践中检验和发展真理
A:①②
B:①④
C:②③
D:③④
根据问句找出相应的答句
____ Is there a river in the nature park? A. Yes, I do.
____ Do you like the nature park? B. Yes, there is.
____ What colour is the bridge? C. No, there aren't.
____ Let's go to the nature park. D. It's green.
____ Are there any fish in the river? E. Good idea!