??????????????????1??????????30??? ?1????????29??????,??????????????????,?,????40???

???,??1?????2???????????,??????????,???

????????????????,??????????39??????????,???40????????

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

?? ??40??? ??:???????“????”

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

2??????????

3???????vx

4????????????

5?????????

??????????????????1??????????30??? ?1????????29??????,??????????????????,?,????40???

???,??1?????2???????????,??????????,???

????????????????,??????????39??????????,???40????????

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