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6??,??????????????????????????????????4~8???35?????????????,??40?????????

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7??????????(7??1-10?),?????????????????????????????????????????????????????50~100?????,??????????????????????????????????????????????????150~200?????,????250?;???????????????????????????????30~80????,??100???????????????3~7??,??1??

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7???10??,???

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??????11-14????(7?????11-14?),?????????????????????????????????????????????30~60???,?????70~100??????????

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7?????3-8????????????

7??????1-2??????,3?,4-8????????????,10??(???6??)?

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7????4-8????,??????????,?35~38????????,???????????????,????4-8???

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7???????2-3??????6?????????????,??????,????????????

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