????:1???????:????V

2???123???????

3??????????

4?????

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?????????????????????????????,??????,???????????????

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

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

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