????:1??????50??????:????????

2???????300

3?????

4????????

5???????

??8?28????????????? (??????????????? ???)????28???,200??????????2????????????27?????????,????????????6?,????

???????????????????,??,?????????,??????

?????????????,?6??????????????????,??????????????????????????????,???“??????????????????500???????????????,???????????????”

??????????????????,?7??????????,???????????142.5?????????????????????????????,??????????????????8.9%?(????????????????) ??????:?????