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

2?????

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

4???????

5?????????

??????????12?????????????????18????????? ?????????????18??,????????????????????????????????????????

12??????????????18????,???????????????????????????????(?????????)?????????(??)??????????? ?????????????

?,??????,??????????,???“?????????”,?“??????????”????????????,???,??,?????????????,??????,??

????????,???,??????,????“??”???????????“??????????”,??????,?,????,???????(?)

??:??????????????????????