?? ??????:BBC????“???” ??????????
????:1????????????:??????
2?????????????
3???????
4???????
5?????????????
?????????12?????????5????????? (??????????? ?? ????)???????????12??5??
??:3?????????????,??????(BBC)???????,????????????????,??????????“????”?????BBC?????“???????”?????????????,??????????????????
????:?,???????“????”,?“????????????????”????????????,???????????,??,???90%??85%,?????????????????“????????????????”??????
?????????,???????,??????,??????????????????????“???”??????????“????”“???”?????,???????????,???“?????”???????????????????????,??
????????,???“??”??????????????,??????“??????????????”“????”???????????????,???????“??????”“??”???????????,??,???????????????????,????,?????????“???????????????????”?,?????????,????????,????????????,??????????????(????) ?????????????????????????????:?????????????????