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

2?????v×

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

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

5??????????

??????2???6?????????????????? (????????? ??????????)???(??????????????“?????”)6???????????,???,?????????????(?????)???????????????,??2011???????,??????????????

???????????,???????,?????????????????????????????????????????,???????????1239?????????????????,??????,??,??????????????????

???????????????,????????????????,?????,????????????,?,?40%,????70%,???4????,????,???

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