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

2???????????

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

4?????????

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

?8???????????????19????(???)??????????????????«???????????»???????,??11??????????26???30????????????????18??,??100???,?????????????500?????????,?????????

???????,?30%???????????,???500??60%,????????????????????,?????????????????

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

???:??,????????????????????????????,??????????????100?????????????

??,?????,???????? ??????????????????:??????????????????