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• 1?????????????????????
• 2????????4.2???????15??
• 3????????13????????????
• 4?????????????????????
• 5??:???3??????100???????
• 6?????????????????
• 7????:??8???????????
• 8???????????0.6%?????????
• 9??????:??????????????
• 10????:???????????????
• 11????????13????????????
• 12????????????????????
• 13????????13????????????
• 14????!????????????????
• 15????12?????????????????
• 16???????????“??”??????
• 17????????????????????
• 18?·???!???????????????
• 19??:??“??”????????????
• 20?????????????????????