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- 00:00 免费1、Unit 1 Encyclopedias(1)上
- 00:00 付费2、Unit 1 Encyclopedias(1)下
- 00:00 付费3、Unit 1 Encyclopedias(2)上
- 00:00 付费4、Unit 1 Encyclopedias(2)下
- 00:00 付费5、Unit 2 Numbers(1)
- 00:00 付费6、Unit 2 Numbers(2)
- 00:00 付费7、Unit 3 Computers(1)上
- 00:00 付费8、Unit 3 Computers(1)下
- 00:00 付费9、Unit 3 Computers(2)
- 00:00
付费10、Unit 4 Inventions(1) - 00:00 付费11、Unit 4 Inventions(2)
- 00:00 付费12、Unit 5 Educational exchange ...
- 00:00 付费13、Unit 5 Educational exchange ...
- 00:00 付费14、Unit 5 Educational exchange ...
- 00:00 付费15、Unit 6 Ancient stories(1)
- 00:00 付费16、Unit 6 Ancient stories(2)
- 00:00 付费17、Unit 6 Ancient stories(3)
- 00:00 付费18、Unit 7 Memory(1)
- 00:00 付费19、Unit 7 Memory(2)
- 00:00 付费20、Unit 7 Memory(3)
- 00:00 付费21、Unit 8 English Week(1)
- 00:00 付费22、Unit 8 English Week(2)
- 00:00 付费23、Unit 8 English Week(3)