改变航道原理
参考答案：
是指计划工作为将来承诺得越多，故那里者定期地检查现状和预期前景，以及为保证所要求达到的目标而重新制定计划就越重要。
---- Where is Kate ？
------ Look , ______. She is at the school gate.
A．there she is
B．there is she
C．here you are
D．here it is
土地承包经营权互换
