????:1???????:??????????

2????????

3???????

4???????v

5???????

???????????11???????????????22?????????? ?,11??23????27???????????????,????????????????????,?????????,28???????????,?????0??????????????????????????,????!

?????:23-27?????,??????????6~10?,?????????????12~14?,????????????16????????????,?5~6???,????6~9???

??:?????????????????????

??:23-27?????????,??????,??????????????????????????????????,?????????????(?????20~35????);???????????????????????????????????????????????????????8~15???????,?????????????20??????????????????,??????????????,???

????????????:??

???,???????,??,??????????????????????;?????????????????????????,????,???????,?????????????,?????????????????????????????,??,?????????,???????

?????????:???????