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

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

3????????

4?????????

5?21????????

??,?????4??????????,????????????,???????????????????,???????????

10??????31?????????9?????????????30????,???????????????????????????????????????,??????????????????????????

11???1?????????,??????,??5????????????????,???

????????2??,???????,??????????????????,????????????,??,????

?,??????5???????????(7.5?)??,?????????????????????????????????4?,??50???????,???,????

(????????? ? ?????????) ????????????:?????????