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

2?500??3??????

3?????????

4???????

5??????????

?????????2???8???? ??????:???7???????,?????????????????,??“?????”??????????????????

???????«????????????????????»7???,?????,???????,????

??,????,????????????????20%??????(?????50%????)???????????????????????,???????,????

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

???????????????7?????????????,??,?????????????????14????16??(????????????????) ????????:???