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????????????,????????????1979??????,???70????,?????????????????800??????????????

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

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???,??????????????????????“??????”???????????????????????,????,???,??“???,???????‘???????????????????’,???????????????????”

??????????????????????“????”???????????1999????,??,?????????????,??????????

????????????,???“????????????”???,????,???????????????????????????????????????,“?????????????????”,??8-10???4-6???????

2004??????????,??,2007????,????????????????,??,???“????????”?????????????????,??34????,????????????????????????????????

“????,?,????????5%-10%?????????????????,?50%-60%?”???????????“????”?????????

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1984?,???????????????????????,????30????,?80??????2000?????????????????

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