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

2???9598?

3?????????

4????????

5?????

??(???????????????):6?????????17??30?????,???????,53%???

??????,??????3.31???????????,??“????”????????“??????”???????????????????“???”?????????4.8?????????????,????12.8?????,????????????1978??5.05%??????????13.84%??????????4?,??515????????????1000?,?????,2019???????????????????2000??????40%????????,??????????????????????????,4.5????????????

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

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