????:1????????vx:??????

2???11?????

3???????

4?????????

5???????

??11?????????23???????????(????? ??????????)11???????22???,???“????”???????????????(????)????,?????????????????,?????,?????????????????????????????????????????,????

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

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

?????????“????????‘????’??”??,????????????????3????????????????,?“???????”????????????,????????“???????????”??????????

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