材料三：从全球来看，副中心建设是各国应对“大城市病”的普遍措施。但历史上，在很多副中心建设中都曾有过深刻教训。例如，巴黎曾因高估了人口与经济发展，导致规划的8个新城没能发展起来，成为空城；还有一些副中心在建设发展过程中片面追求经济发展的指标，破坏了经济、社会、环境之间的平衡……如何使通州从这些教训中走出一条新路，建设成为宜居宜业的北京行政副中心，是我们面临的一个重要课题。
请你为通州建设成为宜居宜业的北京行政副中心提两条方法论建议。
It is early in the morning, about seven o'clock. Peter is on the bus. He's going to school. There are many people on the bus and it is a bit hot. Peter is sitting by a window with a book in his hands. The bus driver is driving slowly(慢地). Most people on the bus are using their mobile phones. A girl in a red sweater is standing near Peter. She looks very happy. She is reading some funny things on her mobile phone. A fat boy behind him is busy playing games on his mobile phone. A tall man is Jack. He is listening to music on the mobile phone. He's about thirty years old. They are all busy and happy.
