???????????????

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

???????????6??????????15??? ????,????6?????15??????????????10?:??????????,6?????????????15????????????????????14??16?????14??,??????????????????????????????????????????????????????????,??,???????????????????????????????(100~200?)???????????????????????????(??30~50?,????????????????70????????????),??????

?????????????

?????:

1???;

2??????????,?????;

3???,?,????;

4???????????????,?????????????????

?????:???