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

2???????????

3?????????

4????????

5???????????

?,??7??12???????30????????,?53?????62?????,???????

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

7??????????????9??5???,?6.8?????????,??,??????????????20????6900???????????????,?20??????????3??(?????)??????????????????27?????????????(??)

??:????