????:1?????600?????:???????????

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

3???????

4???95?

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

????????????????6?????????????????20???????? ???????????,??,???????????????????????????,??9????,????,?????,??????5???,????4?????????,?????????,????????,??????

??????????????????????????,6??19???????????????,???????9.16??,???????????????????????????????,??????????4.99???,?????????????????????????????????????????????????????????????,?????????;??4.17??,????????????????????????????????????????????,?????????????????????,???

??????:???