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

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

3????????

4???????

5?????????

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

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

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

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

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