本课程为收费课程，购买后即可观看完整内容
-
- 00:00 免费1、Unit 1 The king's new clothe ...
- 00:00 付费2、Unit 1 The king's new clothe ...
- 00:00 付费3、Unit 2 What a day!
- 00:00 付费4、Unit 3 Holiday fun
- 00:00 付费5、Unit 4 Then and now
- 00:00 付费6、Review 1
- 00:00 付费7、Unit 5 Signs
- 00:00 付费8、Unit 6 Keep our city clean
- 00:00 付费9、Unit 7 Protect the earth
- 00:00
付费10、Unit 8 Chinese New Year - 00:00 付费11、Review 2