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 Friends(1)
- 00:00 付费2、Unit 1 Friends(2)
- 00:00 付费3、Unit 1 Friends(3)
- 00:00
付费4、Unit 2 School life(1) - 00:00 付费5、Unit 2 School life(2)
- 00:00 付费6、Unit 2 School life(3)
- 00:00 付费7、Unit 3 A day out(1)
- 00:00 付费8、Unit 3 A day out(2)
- 00:00 付费9、Unit 3 A day out(3)
- 00:00 付费10、Unit 4 Do it yourself(1)
- 00:00 付费11、Unit 4 Do it yourself(2)
- 00:00 付费12、Unit 4 Do it yourself(3)
- 00:00 付费13、Unit 5 Wild animals(1上)
- 00:00 付费14、Unit 5 Wild animals(1下)
- 00:00 付费15、Unit 5 Wild animals(2上)
- 00:00 付费16、Unit 5 Wild animals(2下)
- 00:00 付费17、Unit 5 Wild animals(3)
- 00:00 付费18、Unit 6 Birdwatching(1)
- 00:00 付费19、Unit 6 Birdwatching(2)
- 00:00 付费20、Unit 6 Birdwatching(3)
- 00:00 付费21、Unit 7 Seasons(1)
- 00:00 付费22、Unit 7 Seasons(2)
- 00:00 付费23、Unit 7 Seasons(3)
- 00:00 付费24、Unit 8 Natural disasters(1) ...
- 00:00 付费25、Unit 8 Natural disasters(2) ...
- 00:00 付费26、Unit 8 Natural disasters(3) ...