????:1???sn??:?????????

2???????

3?????

4??????

5?qq?????????

???12?????????22? ????“?????????”?????????????,?????,??,??????,???????????(??)??????????21?????????????,?????????????

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

???????????????:“?????????????????????,??‘??????’,??????????”(??????????????) ??????????????????????:?????????????