????:1????????500???:????????

2?????

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

4???????

5???????wx

??????12?????????????19?????????????????? (??? ???)??19??????,????

??,???,??????????????49.9%???????????????????????????,???????????????,???????

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

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

???????????????????,????????,??11?????44.3?????????????????,????????3.5%?(???????????????????) ???:??????