?? ?????:??????????????
????:1???????:??????
2???????
3???????
4????????????
5???????
?1?????????????????????20????????? ?????????????:???(??)20??????????????,????????????????
?????,?????????????,?????????????,?????????????,??????????????????,???
???????????????????,????28??????????,?????,?????????????2???7??????????,??
??????19??????????19???2??????????????????????,???????????????20??10??????????????????????20?,???,????
????????????????20????????,????????,????(??????????????????????) ????:??