????:1?????????:??????300????

2?????

3?????????

4?????????

5?????????

?????????????12????22???????? ??????????:????21????????????,?????90%?

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

??????“??”???,???????(???????????????????)21????,????????????????????20????(??????)????(??????)??????????????????,????

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

??????????????????21???,????,??????????,?????????????

«???»21????????????,?????????,???????????????

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

???????????????????????,????????????????21???????????????,?????????????????“????????????????????????????”????????????,?????

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

??????????????,???????????????????20?????(?????????????????????????????) ???:??