???1????2? ???????,??????1??????1?,???????“??????????????????????????????????”????????????,????15?????????25????

???????(NBC)?,??1?????????1??,???,???????10??30????????,??????????????????????????????????,??????1?????????1?,???????,??????? ????1???1?????????,???????,???

??????????,????????,??????????????????“?????????”??????????“????”????????“?”,??

???,??“?”????????

?????????(ABC)???,???,???????????????????,????

???,????“???”????,??????

???????:??? ??“??????”

?? ????????????15?? ????????

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

2??????95?98

3?????????

4?????qq

5?????

???1????2? ???????,??????1??????1?,???????“??????????????????????????????????”????????????,????15?????????25????

???????(NBC)?,??1?????????1??,???,???????10??30????????,??????????????????????????????????,??????1?????????1?,???????,??????? ????1???1?????????,???????,???

??????????,????????,??????????????????“?????????”??????????“????”????????“?”,??

???,??“?”????????

?????????(ABC)???,???,???????????????????,????

???,????“???”????,??????

???????:???