file:新概念英语课本第一册(扫描版).pdf file:Lesson 99-100 Ow!_知识拓展（学生版）.flv file:Lesson 97-98 A small blue case_知识拓展（学生版）.flv file:Lesson 85-86 Paris in the spring_知识拓展（学生版）.flv file:Lesson 81-82 Roast beef and potatoes_知识拓展（学生版）.flv file:Lesson 93-94 Our new neighbour_知识拓展（成人版）.flv file:xgn1b1_l99_yfjj.flv