????????????6?28???????? (????? ??????)????????????28???

????????????????:?????50????50??????????????

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

?????????????????:??50????,???,??

50?????????,?????????????,???,??,??????????“??”??????????????9??????????????????????????????,???????????????????,????????????????????????????????,???????

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

???????????:??? “???????”_????

?? ??????50???????:??,????????????

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

2???????vx

3???????

4?????95?????

5????????

????????????6?28???????? (????? ??????)????????????28???

????????????????:?????50????50??????????????

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

?????????????????:??50????,???,??

50?????????,?????????????,???,??,??????????“??”??????????????9??????????????????????????????,???????????????????,????????????????????????????????,???????

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

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