???????????????

??

????2????????5??????(??????)5????????????????,??????????????????????????????????????????????????

5??????,??? ???? ????

??????????????,?,???“??”,???????????????????“???”?????,???????“??”?,??,??“1+N”???????????????,???????“????????”???,??????????“??????????????????”,?????????????????????,???????????????

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

??1990???????,?????,??????????,????????,????????,“????,?????????????????????????????”

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

?,?????????????,??20?“??”????????,????????????????????????????,?????230???????;????14??????????????????????,???????????;??16???,??10?????????????????????????????????????10??????,6????????????????,????????????(?????)

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

?????????

?????????????????????????

????????