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

2???????4?????

3?????98??????

4???????

5???????????

???2????2??????????? ???(BBC)??????????,?????????????2?????1?,?????,???????25%??,????

??,??????????,??????????1550?????????25%???????????????????????????300????????????2???????????????4???,1250??21????

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

?,?,??????????????????25%????????,??????????????????????????????????????10%?

??,?,???,????????? ????:?????