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

2???????

3???????

4????????

5??????

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

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

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

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

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

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