©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(210093):,,,,:;;:F270:A:1001-8263(2005)07-0027-08,,(),,,,,,,,,,,,,,,,,1,,,,2,,,,,,,72SOCIALSCIENCESINNANJINGNo.7Jul.2005Z©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.()(),,,,(1),,,(),,,82[SOCIALSCIENCESINNANJINGNo.7Jul.2005©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:?,?5,,,,,67,(),,92SOCIALSCIENCESINNANJINGNo.7Jul.2005Z©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(),8:,,,,,,,,,,,,,,9,,,,,,,,:,;,,,,,,,,,,,,03[SOCIALSCIENCESINNANJINGNo.7Jul.2005©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,,,,,,,,,,1940,4011.511,,??,,,:,,3M,3M,,12,,,,,,(1),,,,,,,,,,,,,,,,(),,,13,,,,,,,,13SOCIALSCIENCESINNANJINGNo.7Jul.2005Z©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,;,;,,,,,,,,,,,,,,(1),,,,,2080,,,,,,,23[SOCIALSCIENCESINNANJINGNo.7Jul.2005©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(2),,,,,(3),,15,,33SOCIALSCIENCESINNANJINGNo.7Jul.2005Z©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:1F:,,20022:,,20003:,,200364::,2005,,20055::,,200536::,,200417:,,200438::,(),200459:,,199810:,,200311:,,200412:,,2002613P:,,199714:,(),20042,200415:,,199716:,,200417:,,2004118:,,200119::,,2004:43[SOCIALSCIENCESINNANJINGNo.7Jul.2005