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

2?????????

3?600??????

4???????

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

????????????????????????2????????????????????5?? (????????????????????????????????)5?????????????????????,20????“?????”???,?????????????????????????,??230????????????

???????????,???????????????????,??20????80??????????????????,???????????????????,?????????????????

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

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

?????1990????????????????????,30???????????????,???????,?????,“????????”?

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

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