????:1???????????:????6???

2???????????

3??????

4???????

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

????:???????12????????????,??????????(12???????????????????????????1????????????)?,??,????????

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???????????????????????«????????»12?????????????1????,«???»?????????????????,?????????????;????“????????????”??

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12???1???,?????????????????«??????????????????????»?????????«??»????????????????,?????????????????????????“????”“?????”????????????????????????????????:????????????????????????????;?????????????????;???????,?????

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???????12????1???????????????,«?»?????,????0.5????????,???????????????????,???1.5%,???????????????1%,??0.5%(??)?

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????????????«????»,?12????????1????????????????,???????????,??20%????????????????

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