本课程为收费课程，购买后即可观看完整内容
-
- 03:32 付费1、Welcome back to school_A
- 05:50 付费2、Welcome back to school_B
- 04:33 付费3、Welcome back to school_C
- 04:04 付费4、More to learn_I
- 04:37 付费5、My family_A
- 00:00 付费6、My family_B
- 04:04 付费7、My family_C
- 06:41 付费8、More to learn_II
- 00:00 付费9、How many?_A
- 00:00 付费10、How many?_B
- 00:00 付费11、How many?_C
- 00:00 付费12、More to learn_III
- 00:00 付费13、Recycle 1
- 00:00 付费14、Do you like pears?_A
- 05:38 付费15、Do you like pears?_B
- 00:00 付费16、Do you like pears?_C
- 00:00
付费17、More to learn_IV - 00:00 付费18、Where is my ruler?_A
- 00:00 付费19、Where is my ruler?_B
- 00:00 付费20、Where is my ruler?_C
- 00:00 付费21、More to learn_V
- 00:00 付费22、At the zoo_A
- 00:00 付费23、At the zoo_B
- 00:00 付费24、More to learn_VI
- 00:00 付费25、Recycle 2