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

2?????????

3?????QQ?

4??????????

5????????????

???2?????????????????????????????????21???????????????? (??? ??????)2?21?????????,?????????????????????,???????;????????

??,???,1977?????????????11???,??????????????????????????,?????????????

?,1973?5???????????????????,?,??????????????,????

?????????,1971??2??????????????,????????????????????????????????????,??(???) ??????:?????