?? ??????????????:???80%????
????:1???????????:????qq?
2???????
3?????
4???????????
5???????????
???????12???????5?????????? ?,????????????????«??????????????????»?12????????????????????????????5??????????????,????????,???????????«??»??????????,????
?????????????????????????,?????????????????????????????????????????????,???????????,??????????80%?,????96.6%,???18.9??,??,???
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