???????2?7?? ?????,?(2??6?????),????,???????????????????????????????????6~8??,????9~13?;??????????????????????????????????????????????????8???????????8?,???????????????6~8??????,?12~16?????????????????,??

???????(7???8?????????),???????????,???????6~8???,????10??????;??4~6?,????????????8~10?,???????????????????10??????????????????????????

????,7???????,????????????5~6?????????????7~8????,??????,???????????9~10????;?????????????????????????????????9???????????????10~11???8??,??????????,???????

???

7?????,??,?????????????????????????

?????,7????8????,?????????,?????????????????????????;????????????????????????????????????????????,??7??????,????????

????,?????????,?????,???????????????,???????????????????????????,??????????,??????,????????????,??????????,??,???????????????????,?????????

??:??? ??“?????V”

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

????:1??????V:???????

2???????

3???????

4?????????

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

???????2?7?? ?????,?(2??6?????),????,???????????????????????????????????6~8??,????9~13?;??????????????????????????????????????????????????8???????????8?,???????????????6~8??????,?12~16?????????????????,??

???????(7???8?????????),???????????,???????6~8???,????10??????;??4~6?,????????????8~10?,???????????????????10??????????????????????????

????,7???????,????????????5~6?????????????7~8????,??????,???????????9~10????;?????????????????????????????????9???????????????10~11???8??,??????????,???????

???

7?????,??,?????????????????????????

?????,7????8????,?????????,?????????????????????????;????????????????????????????????????????????,??7??????,????????

????,?????????,?????,???????????????,???????????????????????????,??????????,??????,????????????,??????????,??,???????????????????,?????????

??:???