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The top documents tagged [shen nong shen nong]
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Unit 6 When was it invented? Section A. Talk about the inventions( 发明 ). Which one do you think is the most helpful in our daily life? Lead in
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Unit 6 When was it invented? Section A (1a—1c). Talk about the inventions( 发明 ). Which one do you think is the most helpful in our daily life? Lead in
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