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

2?????wx

3?????wx

4????????????

5????????

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

???????6???20???????????????????????????? (?????????? ????????????????? ????????????????)20???????,???????,??????????

?(??,??????????),??????????????????????1?????????3????????,??,?????????????????????????,????????95%????,????18????

18??????????????,????????????,???,??24????????????????????????80??,??????????1???,???????????20?????????????????????,???12???????????????????

“???????????,?????????5%?????,??20%30%?”???????????????,?,?????

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

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

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

?????:???????