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

2??????

3??????????

4???????

5??????????

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

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

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

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

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

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

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