生态农业是通过建立____ ，形成____ 、____ 和____ 相统一的现代化农业生产体系。
《九章算术》的特点是（ ）
根据首字母提示完成下列短文。
A good class monitor gets on well w____ classmates and likes to h____ others. He often cleans the classroom and makes the classroom c____ just like h____. C____ him to be your monitor.
