original edition of course-book 基本例句 原版教材 XIN DU uses a range of additional materials to facilitate the course, including case studies, international textbooks, guest speakers, CD-Rom and video learning material.信都运用一系列辅助教学手段，包括案例分析，原版教材，客座讲师，激光视盘和有声教学材料来促进课堂教学。