????:1???????????:?????95?98?

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

3???sn??

4??????

5?????????

????????????????????????????11????23?????????(?? ???????????????????????)???????23????(????)????????????,????,????,????????????,???

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

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

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

??,????????????,???,??,????????????????,?????????????(?????????????????) ??????????:????????