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

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

??????????6??????15???? ??,??????6?15?????????????18??:16?,??????????,???????????6?16??,????????????????????????????????????????????????????????35~36???????????,??????,????????????37~39?,???????40????

17-19??,?????????????????????????????17?????????????????????,??????????????????????37~39????,?????????????????????????????????????40?????????????

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

????:

1????;

2????;

3???????????????????????????;

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

???:?????