???????????????????

???????????2?11???? (???? ??????????)????????????11?,??10???????????,?????40??8???,???

??????????????,10??????,???????????????,???17???????????????18?????????????????????????,???????????17?????????????????????50?????????????????????????18???,?????,??????

???????????????,????????21?????????????????,???????,??,???,????,???

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