人教版九年级全册英语Unit 6 When was it invented？SectionA 1a-1d 教案

人教版九年级全册 Unit6 When was it invented？Section A 1a-2d教案

人教版九年级全册Unit 6 When was it invented？SectionA 3a-3c 教案

人教版九年级全册 Unit 6 When was it invented？ Section A 3a-3c 教案

人教版九年级全册英语 Unit 6 When was it invented？SectionA 1a-1d 导学案（无答案）

人教版九年级全册 Unit 6 When was it invented？Section B 2a-2e 教案

人教版英语九年级全册 Unit 6 When was it invented？ Section A 1a-2c 学案（无答案）