??????????????11???????????????28?? (????? ????)??????????????????L2?????????????????L4???????,28??????????????????,???(?)?????????????????????????

????????,??10??????????????,???????????????????????????????????????,?????????????

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

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

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

?? ????????????(????)???

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

2?????????

3???50???

4?????????

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

??????????????11???????????????28?? (????? ????)??????????????????L2?????????????????L4???????,28??????????????????,???(?)?????????????????????????

????????,??10??????????????,???????????????????????????????????????,?????????????

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

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

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