????:1???????:??????????100?

2???????????

3???????vx

4???????

5?92?95?98??????

????2????????????????????17?????????????????? ????????????????(???????????????????“??????”)17???,??37.7%???,?2???????

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

?????????????,?35??????????????????,?????5???????????,????,?????,??????????,???????????

??????????????????,?????????????????,??(54.3%)??????????????????,?????????????2??,???????????????????3.5???????????

?????????,??,?,??????????????(46.6%)?????????

????????“???”??????,???????????????,????????????12????????????17?????????????12.5%?????????????18.4%,??????????????????,??????(??) ??:?????????????????