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"The Nature and Movement of Seawater" PPT download of water on earth (the first lesson on the nature of seawater)
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2023-09-25 17:35:04
"The Nature and Movement of Seawater" PPT download of water on earth (the movement of seawater in the second lesson)
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"Change" PPT courseware
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"The Evolution of the World Pattern" Changes in the World Pattern after the Cold War PPT Courseware 2
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"Changing Trends of Random Phenomenon" PPT Courseware 2
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"Erosion of Land by Rainwater" Earth's Surface and Its Changes PPT Courseware 2
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"Sewage and Sewage Treatment" Environment and Us PPT Courseware 3
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"Sewage and sewage treatment" environment and us PPT courseware 2
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"Erosion of Land by Rainwater" Earth's Surface and Its Changes PPT Courseware 3
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"Changing Fish" Position and Coordinates PPT Courseware 6
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"Changing Fish" Position and Coordinates PPT Courseware 6
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"Combustion and Fire Extinguishing" PPT courseware on changes in matter
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"Iron is Rusty" Changes in Matter PPT Courseware 2
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"Changing Fish" Position and Coordinates PPT Courseware 4
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"Four Seasons Starry Sky" Changes in the Four Seasons PPT courseware
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"Changing Trends of Random Phenomenon" PPT Courseware 2
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"Chemical Formula and Valence" Water in Nature PPT Courseware 4
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"Chemical Formula and Valence" Water in Nature PPT Courseware 5
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"Chemical Formula and Valence" Water in Nature PPT Courseware 3
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"Chemical Formula and Valence" Water in Nature PPT Courseware 6
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"Chemical Formula and Valence" Water in Nature PPT Courseware 7
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"Water Cycle" Water on Earth PPT
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"Dominant and Recessive Genes" Biological Inheritance and Variation PPT Courseware 2
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"Dominant and Recessive Genes" Biological Inheritance and Variation PPT Courseware 4
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"The Air Around Us" Water and Air PPT
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"The Air Around Us" Water and Air PPT
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"Chemical Equations" Chemical Changes and Their Representation PPT Courseware
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"Chemical Equations" Chemical Changes and Their Representation PPT Courseware
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"Sewage and sewage treatment" environment and us PPT courseware 3
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"Sewage and sewage treatment" environment and us PPT courseware 3
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"Erosion of Land by Rainwater" Earth's Surface and Its Changes PPT Courseware 3
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"Chemical Formula and Valence" Water in Nature PPT Courseware 2
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"Changes of Sea and Land" Land and Ocean PPT Courseware
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"Changes in Population Genetic Composition and Formation of Species" Biological Evolution PPT courseware (Lesson 1: Changes in Population Genetic Composition)
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"I Love the Mountains and Waters of My Hometown" PPT
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"River and Boat" PPT courseware
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"Slowing down the speed of food spoilage" Food PPT courseware 3
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"Classification and Transformation of Matter" Matter and its Changes PPT (Lesson 2: Transformation of Matter)
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"Dominant and Recessive Genes" Biological Inheritance and Variation PPT Courseware 2
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"Vaporization and Liquefaction" State of Matter and Its Changes PPT Courseware
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"Dominant and Recessive Genes" Biological Inheritance and Variation PPT Courseware 2
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"Dominant and Recessive Genes" Biological Inheritance and Variation PPT Courseware 4
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"Utilization, Development and Protection of Water Resources" PPT
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"Measurement of Angle" PPT courseware
下载 0 次
2019-01-28 09:00:00
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