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

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

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

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

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

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