??2???6???????????? ??????:?????????????????6??????????????????????,??????,??,??556????????????????????

????????????6???,????????????,??????????1???19??25??30??????2??????????1???????????????????18?????(?????????)?538???

????????????????,???????????,?,????????????????“?”??????

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

?????????????????,????????????????????????????????????????????,????????,??????(?) ???????????????????????????:??? ??“???????”

?? ?????????:????????556????????

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

2?????v

3???????

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

5?????????

??2???6???????????? ??????:?????????????????6??????????????????????,??????,??,??556????????????????????

????????????6???,????????????,??????????1???19??25??30??????2??????????1???????????????????18?????(?????????)?538???

????????????????,???????????,?,????????????????“?”??????

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

?????????????????,????????????????????????????????????????????,????????,??????(?) ???????????????????????????:???