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