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

2???????

3???1000?????

4??????????

5???????

?????????????1??????21?????????????? ?????????????:????

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

???????????????,?????????

??????,????????,???,?????????,??????????????????????????,??????????

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

1???21??????????????,?????????????? ???????? ??

?,?,???????????????????????,?????

“????????,????????????,???????????????????????30%????????,?????20%?”??????????????????

????,??,??????,?????????????,“?,??100??(???????????????,???????),?????,??????????”?

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

?????????,??????????????????????????????????????,?????????????????????15?,???60%?

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

???,???????????????????????,????????????,???????

“?????????????????????3?????????????????,??????????????????,??????????30????????????,????????????20%?”????(???????????????)

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