和平与发展是当今世界的两大主题,它们的关系是( )
①两者相辅相成 ②和平是发展的前提条件
③发展是实现和平的重要基础 ④两者是一回事
— What's Lisa's opinion?— Sorry, I don't know. I haven't got her reply .
听第8段材料,回答小题。
Look, you can see many _________ in the pool. And here is some ________for you to keep them.