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

2???????

3???????

4??????????

5??????v

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

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

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

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

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

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