????31????????????

?????????????????????2??14???????? (???????? ?????????)???????????????14?????,???????????????8.5????,???????????39.2%,????????1993?????????????,????,?,???,?????

????????,???????????,?????????“???,???‘???’?????????????????????‘?????????’?????????????,???????50%,??,???????????????????????????????”??????????????

?????????????????????????????????????,?????????????????????????????????????????????????????,?,???????????????,?????80???????????

?????12????????????????????,?????????????,?????

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

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