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

2?????????

3?????????

4??????

5????????

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

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

????????,??????????????????????,????????,???????????????????????????????????????,??????????????,???60??????????????????,????????????

??,????????;???,?????????????????????;?????????,????????90%?

????????????,“???”?????????,????,60???????????????34%,?????????????????????????

??,??????????????,??????????????????,????6???????,?????????????????50%???,??????“??????????????????”???,???

???????,2?????????????5????,?????????????????????????24%? ????????:???????????????