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

2?????

3????????????

4???????????

5???398?????

?1???????30??????????????? ????????(NBC)30??????????????????,????30??????????????????29??,?????,????????????“???????????????????????”??

??????????????????1??29????,???,????????????????????1??????????????????????30???????? ???? ????

????????????,?60??4????????,????????3????

???30???,????3?????,??????????????????300??,?????????????????????,???????????????????????

NBC?,??????????????????????,??

???:????