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????????2?4??????????? ????4??????,??,?,????,???????,?????,???????????????,???????????????,??????5??,????,??????????????????

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2??????4?5?,??,??,6??,????,?,??????????????6~8?,?????????10???????,???????????????????4~6?,?7~8?;??4~6?????????????,?????7~8????????????,??,??9~10?,?????????????7~8?????????????,????9~10????????????????????2?????4??06???:?????,2?4????????08??5?????08??,???????????????????????????????????????5~6??????????7~8??,??,????????????????????????????6~8??????9~10????;?????????????????????????7~8???9???????,???????????????9????10?????

?,4-5??????,????,???????????(10~19?)?5-7?,??,??????????????,?????????????

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2??4??08?5?08?,????????????????????????????,??,???,?(10~19??????????????)???????????????????????????????????????????????????????????????????????????????????????4~6?????????????????????????7~8??????????????????,??????????9~10???

2????5????????????08?????6??08???????????????????????,?????????????????????????????????????????,????,?(5~7?)??????????????????????????????????????????????,?????,????????????????????????4~6??????,?,???????6~8?????????????????;??????????????????????????????????7~8?????9~10??

2?6?08?????7??08????????????,??????????????????????????????????????????????????????????,???????,?????(5~7?????)????????????????????????????,??,??????????????????????????????????????????????????????4~6?;????????????????????7~8??,????????9~10?????