????:1???????????:????1000?????

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

3???????

4?????

5??????????

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

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

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

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

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

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

???:????????????????