题目

Nobody likes to do chores, especially kids. How can you make your kids get into a good habit of doing their chores? Try making chores fun for them.Play some music: Music makes everything seem like a party, doesn’t it? Play your kids’ favorite music and let them dance around while they are doing their chores.Make it a treasure hunt (寻宝): It’s a good way when you would like them to clean the house. Let them know that you hide (隐藏) a $5 bill someplace. If they find it, they can keep it.Change often: If your kids keep doing the same chores for months, they may feel bored. Teaching th两名日本科学家与一名美国科学家利用钯作催化剂，将有机物进行“裁剪”、“缝合”，创造出具有特殊功能的新物质而获2010年诺贝尔化学奖。下列说法正确的是(　　)A．有机物中一定含有碳和氢两种元素B．一定条件下，使用催化剂能提高反应的平衡转化率C．将有机物进行“缝合”可以不遵循原子守恒定律D．将有机物进行“裁剪”需要破坏旧的化学键