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

2??????????

3???????a???

4??????????

5???????????

????????????12??????2?? ????2?????????????,57.2%?,??????28.7%?

????,???10????,??????,??????????????????????????????????????16.7%?,40.5%?????;11.4%??,17.3%??????;?????????????14%???

??????????8????????,44%????,34%?????????????????????,???????13.2%,??????????

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

?3???????,??????????????“????”??;10????13????,??????????????????,?,?????

????????????????“??????????”??????????????????????“????????????????????”???????“????????”??,??????????????????????2??«???»??,????????????????,????????????????????,???????????????,???(???) ???????????:?????????