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

2?????????

3??????????

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

5?????

?????????????????12????????20?????????? ??????,??????????19??????????,??????????9????8???????????

  ?????19?????????????,?9???8??????????????????????????? ???????

???,???????????????????????????4????????1???,????????,?????????????19???,????????????,???3??,???,??????????,?????????????????,???????????????????

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

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

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

??????:????