?? ????????????
????:1???????:???????????
2?????????????
3??????????
4???????
5??????
?12??????????2? (?? ???)??12?2?????,????,??12??????????3???5?????????(???????????)
???????????:????????????12??????????2? (?? ???)??12?2?????,????,??12??????????3???5?????????(???????????)
???????????:???????????????:1???????:???????????
2?????????????
3??????????
4???????
5??????
?12??????????2? (?? ???)??12?2?????,????,??12??????????3???5?????????(???????????)
???????????:???????????