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25??????????????????????????0????,“???????????”????????,“???”????,??15?????

???????????,“?????”?????10-15????????,?????????????(??????????????,12-14???,35-45?/????????)?????????????????,?????????????????,?????

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???????????????,?????,???????????????????????????,??,??????????????????????????,???????????????????????????????????????????????7-8?????????,????????????????????????????????9-12?????????,“???????”?????13-14?,?????????15-16???

??,?????“?????????????????????”????????,??69.3%,?15??,?????11.8%???“???????”?????,??“????????”?

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