????:1???????????:??????????

2?????98?

3?????????????

4????????????

5???????sn

????????????12??????????????????27???????(??????????)????????(????)?????,??(????)????????12??????????????????28?????,??????????????????,???????????????????????????????,“??”?????

?????????,????????????????????????????????????,???,???????135??????,???13???????,????????????,??????????????????????,??,?????????????39?????,????200??????????????????,??????????????????????,???????????????10???????????,??????????

??,????????????,????,??????????81%????,????????????????????,??????,??,???????????17?????????,?????????1???????3????,????

?????,?,?????????,??????????????????,????????????????????????????????????????????,?????????????????,?????????????

?200???????????????,???????8???????,????,????????????????????11??????????15?????????????????????????,??45?????????????????????????,??????????28???51??????????????????,????????????????,????,??????12306??????????

??????,???????????????,????????????????????,????,?????????,??????????,?,????????(??????) ???:?????????