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视频
Unit 1 Wise men in history P1
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17:21
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视频
Unit 1 Wise men in history P2
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17:52
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视频
Unit 1 Wise men in history P3
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19:56
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视频
Unit 1 Wise men in history P4
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21:44
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视频
Unit 2 Great minds P1
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20:43
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视频
Unit 2 Great minds P2
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18:52
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视频
Unit 2 Great minds P3
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21:53
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视频
Unit 2 Great minds P4
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29:23
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视频
Unit 3 Family life P1
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21:35
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视频
Unit 3 Family life P2
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19:51
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视频
Unit 3 Family life P3
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19:04
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视频
Unit 3 Family life P4
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20:29
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视频
Unit 4 Problems and advice P1
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20:12
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视频
Unit 4 Problems and advice P2
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19:04
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视频
Unit 4 Problems and advice P3
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20:13
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视频
Unit 4 Problems and advice P4
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20:10
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视频
Unit 5 Action P1
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20:53
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视频
Unit 5 Action P2
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21:52
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视频
Unit 5 Action P3
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19:09
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视频
Unit 5 Action P4
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18:17
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视频
Unit 6 Healthy diet P1
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17:03
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视频
Unit 6 Healthy diet P2
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21:25
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视频
Unit 6 Healthy diet P3
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24:36
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视频
Unit 6 Healthy diet P4
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18:26
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视频
Unit 7 The Adventures of Tom Sawyer P1
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19:41
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视频
Unit 7 The Adventures of Tom Sawyer P2
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18:53
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视频
Unit 7 The Adventures of Tom Sawyer P3
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19:37
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视频
Unit 7 The Adventures of Tom Sawyer P4
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18:14
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视频
Unit 8 Surprise engings P1
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21:08
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视频
Unit 8 Surprise engings P2
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16:26
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视频
Unit 8 Surprise engings P3
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22:38
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视频
Unit 8 Surprise engings P4
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20:14