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

2???????

3??????????

4??????

5???????

?????????10??9?????????? ??,????,?,????????????????????????????????????????????????????????6~8?,?9~10???;???????????????,????????

??,?????,9??????????????11???????,?????????3~6?,????8??????,?????4~5????,??6~8????,?????????????????????????,9??????????????10??,???????????????????5~7?????????????????8?????

????:???

??,??????????,???????,????????9????,????,??,??????????10????????,????????????,???????

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

?????????????????,????????????????????,??????,?????????????????????????????,????;?????????

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