??
????2????????2??????????????? ???(BBC)??,??2???1??????????????????????????????????????,???,???25%????????????,??????????
?,?,??????????1550??25%??????300??????????????2?4??????????,1250???21????????????
????????,???????????????,???????????
???????,????,??????????????????25%?????,??????????10%?
?????????????,?????,??????????,???????? ????:???
?????????
??????????????:????1550??25%?????????????????????