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

2??????????

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

4?????????

5??????????????

???????????12??2?? (??????????????????????????????????)????????????????????12?????????????1??????????????????????????“?”,??????????50????????????“?”?

?????????????????????????,??????????1???????????,??????????1??,??????

12???????????????1?????????????,????(????????)?????????? ??????

??????,1971?,??????,???,??????,????1974????,??????????“???”??????

?,?“????”??????????,???,????????????????????????????????????????(???????)

????????????????????????:?????