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

2??????

3?????????

4????????

5????????

?????????????????????????????2???????9???????? (???????????? ?)9???????????,???????????????“??”???????24?????????????????,?????“??????????????”,??

?????????????????

?????????????,??????????;?????????????????????,???;?,??????????????????????????;????????,??……???,“????,???”

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

????????????????:????