????:1???????:????100???????

2?????300?????

3???????????

4???9581??

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

??????6?????????????28?? (???? ??????)??????6??28???????,????“?????20?”??????????

??“???20????”,??????«??????»,???????????????????????????????5?????????20?????????

???,??1????5????,????3235??,?????48.7%,??????,??????53%?

????????,?????????????????,?????,??????????????????????????????????????????;????????????????????????????????????????????????;????????????????????????????????,?????

??????,?,??????;?,?????????,????????????,???????????????;??????????????,??????“?????????????????????+??+????????????????????”???????????????????,??;???????,???????????,?“???”???????????????,??(??????????) ????????:???