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

2???????

3??????

4???????vx

5?????????

? ??????2????5?????06????:

??????????,2?5?08?6????08?,????????????????????????????????????5~6???????????????????7~8?,??,??????????????????????????6~8??????????9~11????;????????????????????????????7~8???????9~10??,?9???????????????10???

2??????????????????6???????????08??7??08?????,????????????????????????????????????5~6??????????7~8?,?,?????????????????????????????????????????????????6~8?????9~10?????;????????????????????????????????????????7~8???????9~10??,?9??????10??????????????

????:

1??????????????????,???????????????,????????????,???????;

2?????????????????????????????,?????????????????????;

3??????????,??,?????,???????;

4???????????????????,??

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