2016秋人教精通版英语六上Unit 6《There are four seasons in a year》（Lesson 35）
- （精通）英语三年级起点 Unit 6 Lesson 35 （六年级上册） - There are four seasons in a year
2016秋人教精通版英语六上Unit 6《There are four seasons in a year》（Lesson 35）2016秋人教精通版英语六上Unit 6《There are four seasons in a year》（Lesson 35）