?? ?????????????????????????
????:1???????????:????????
2???????500?4???
3???????
4???????
5??????????
??????????12???18????????????? ????18??????,??
12??18????,???????????????(???)???????????????????????????????????????(?????????????????)????????? ???????????????????,??????,?????????????????,?“??????????”,??????“??????????????”?????????????,??????,??,?????????????,???,?????????
?????????????????,??????????,??????,????“??????????”??“????”,?????????,????,?????????,??(??)
??:??????????????????????