????:1?????????qq?:???????

2???????

3???????

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

5???????

?????????????????9??25?? ????????????????“??????????????”??,?????????????????,??12306??App????????????????,????????????,???“???????????”??,??????,?????,???????,?????????

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

?????????????:??,?????????????????????????????????????????????,???A??????????+???????B?;????????????????,??????????C????????????+??D???????????? ???????????????:???