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2?????????

3?????????????

4?????????

5?????????

?????12??21? ??,21??,???,??????????????????????????4~8?;???????????????????????????2~4???,????,?,?????

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21????,?????????,???????????4~8?;????????????????????????????????????????2~4????????7~8???????9~10??

??12???????????21????08?:?,12??21????????????08????22???????????????08???????????,??????????????????????????????????????????????????????5~6??????7~8??;???????????????????7~8???????????????9~10??,??9?????10~11????

??(12?21????08?-22???????????????????08???????)

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?,????,?,??

??,21????????22?????,?;??????????????????????????????

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12????????21??????????????????08?22?????????????????08??,????????????????????????????,????,?(3~9??)????????????????????????????????????????????????????????????5~6????,????7~8?;??6~8?,??????????9~10??

?(12????????????21????????????????????08????????????-22????????????08??????)

12?????22????08???????????????23?08??,??????????????????????????????????????,????,???????????(3~6??????)??????????????????????????????????????????????5~6???????,?7~8?;?6~8????,?9~10?????

?(12????22??08????-23?08????)

12?????23?08?24??????08????,???????????????????????????????????,????,??????????????????????????4~6??,?7~8??????;????????6~8??,?9~10???

????????(12?23?08???????-24????08?) ?????:??