??6?15? ??,??6?15???????????????18?????????:??,6??????????????15?20??16?20?,???????????????(?????),??????????????????????,????(??????????????????????)??,???????????????????????

????????????:???? ??“????????”????

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

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

2?????????????

3???????

4????????????

5???????

??6?15? ??,??6?15???????????????18?????????:??,6??????????????15?20??16?20?,???????????????(?????),??????????????????????,????(??????????????????????)??,???????????????????????

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