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

2??????????

3???????vx

4???????

5???????

2????????????21???,????????????“???????????????????? ???”???

????????????,??????,?96%,?????,?????????????,???“????????????”??????????????????????????????????,??????????,??????????????,???“???????”,????“????????????”?????“?????????????”??????,??????????“????????”?2??,????“??????”???????????,????,?????,?????(????????????? ???????)

??:????