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该文在充分阐述多媒体辅助大学英语教学优越性的基础上,分析了日新月异的信息技术对大学英语教学的影响,探讨了信息时代师生角色的变化问题.“,”On the basis of full exploration of the advantages of CAI,this thesis analyses the influences of fast-changing information technology on college English instruction,then briefly discusses the new roles of teaehers and students in the information age.