???12????????????20?????????? (?? ????????????)20??????????????,??,?????????????????,??????

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

????????? ????? ???????

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

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

??? ????????? ?????

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

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

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

???,?????????????????“??”“?????”“???”“?????”“??”?????,???3??????????????(??????????????)

??????????????:???? ??“?????????”

?? ???????????

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

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

3???sn??

4?????????????

5???????

???12????????????20?????????? (?? ????????????)20??????????????,??,?????????????????,??????

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

????????? ????? ???????

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

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

??? ????????? ?????

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

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

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

???,?????????????????“??”“?????”“???”“?????”“??”?????,???3??????????????(??????????????)

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