???????????2??3???? ????????????,??,2??3????20?4?20??,????????????????????????????????????????5~6????7~8?????,??,???????????6~8????9~10??????????????????????????7~8???????????????????????9?,???????9?????????10???????

2?????4?????20??5???????20??,???????????????????????????????????????????????????5~6????7~8??????,????????6~8?????????????????????9~10????????????;?????????????????????????????????????????????????????7~8?????????????????????9?,????9?????????10????????????????

??????

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

1??????????????,?;

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

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

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

?????:??? ??“???????”

?? ??????:?9?10??????????????

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

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

3???????????????

4???????

5???????

???????????2??3???? ????????????,??,2??3????20?4?20??,????????????????????????????????????????5~6????7~8?????,??,???????????6~8????9~10??????????????????????????7~8???????????????????????9?,???????9?????????10???????

2?????4?????20??5???????20??,???????????????????????????????????????????????????5~6????7~8??????,????????6~8?????????????????????9~10????????????;?????????????????????????????????????????????????????7~8?????????????????????9?,????9?????????10????????????????

??????

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

1??????????????,?;

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

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

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

?????:???