20013()NO.32001(15)JOURNALOFLIAONINGTEACHERSCOLLEGE(SOCIALSCIENCESEDITION)GeneralNo.15:,,:;;,,,,,,,?,,,;,?:,,,,:,,,,,,,,,,,,,,,,,,,:1718,,;,;;,71©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,,,,,:,,,,,,,,,,,,,,:(1),(2),,(3)(4),,,,,,,;,,,,,,,,,,,,,,,:,:,,,,,,,,,,,,;;,,;,,,,,,,,,:,,;,,,81©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.lv,,,:,lw:,,,,,,,,,,lx,,,,,,,,,,1992,,,,,,,,,,,,(J)1997(1)21(M)19966185(J)1999(8):(M)199994849(M)1991102(N)199389(J)1997(3)(J)1994(1)188(J)2000(2)lv2lw(M)331lx18891©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.