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

2????????

3??????

4??????95?98?

5??????????

?6???14??? ?,?13??????,?????????,??????????????,?????,14???????????,?,???“??”20????????????

  ?????????,??? ??????“????”

???????????????????????????,14???????????7????30??,??,????????,????????????????,?????????????????20???,??????????????????????

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

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