ile:LIST 7.mp3 file:LIST 6 PART 2.mp3 file:高频词-List 8.pdf file:专业词-讲座部分（Sociology 社会学）.pdf file:专业词-对话部分（学习场景+生活场景）.pdf file:专业词-讲座部分（Physics & Chemistry 物理与化学）.pdf file:专业词-讲座部分（Earth Science 地球科学）.pdf file:SOCIOLOGY.mp3 file:SERVICE ENCOUNTER.mp3 file:EARTH SCIENCE.mp3 file:PHYSICS&CHEMISTRY.mp3