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

2??????????

3????

4???????

5???????????

??????2???4???????? (?? ??????????????)???4??????????????,??(????2????4???18????????????????),???????????????,??,??

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

?,?????????(2???????4???)??????,??????????????????????,???????????????,?,???,??????,??????;?????????????????,??????“???????????????????????????????”,????????????????????????;?????????????????,??“?????????????????”,?????????????,??,??(?????)

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