视频地址：https://video.cache.bdschool.cn/vd/382711ab4ace7d81a39d0133287d97d6.mp4
附件：0424初一英语(师大版)-Unit 1 Lesson 3 Safety First 2-1教案.docx
附件：0424初一英语(师大版)-Unit 1 Lesson 3 Safety First 2-2PPT课件.pptx
附件：0424初一英语(师大版)-Unit 1 Lesson 3 Safety First 2-3学习任务单.docx
