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"Natural Features and Agriculture" Northern Region PPT Courseware 4
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2023-09-25 18:38:31
"Natural Features and Agriculture" Northern Region PPT Courseware 2
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"The Rise of the Mongols and the Establishment of the Yuan Dynasty" PPT download
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"Natural Features and Agriculture" Northern Region PPT Courseware 3
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"Exploring Combustion and Fire Extinguishing" PPT courseware on combustion knowledge
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"Generation and Propagation of Electromagnetic Waves" Electromagnetic Wave PPT Courseware
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"The Generation and Propagation of Sound" Sound Phenomenon PPT Courseware 15
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"Application of Density Knowledge" Quality and Density PPT Courseware
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"Conditions for Floating and Sinking of Objects" Pressure and Buoyancy PPT Courseware
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"The Generation and Propagation of Sound" Sound Phenomenon PPT Courseware 7
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"The Generation and Propagation of Sound" Sound Phenomenon PPT Courseware 8
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"The Generation and Propagation of Sound" Sound Phenomenon PPT Courseware 9
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"The Generation and Propagation of Sound" Sound Phenomenon PPT Courseware 10
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"Electromagnet Electromagnetic Relay" Electricity and Magnetism PPT Courseware 4
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"Solar Energy" Energy and Sustainable Development PPT Courseware 4
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"Energy" Energy and Sustainable Development PPT Teaching Courseware
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"The Generation and Propagation of Sound" Sound Phenomenon PPT Courseware 2
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"Measuring the Density of Matter" Mass and Density PPT Courseware
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"Where does food, clothing and supplies come from" Production and Life PPT Courseware 2
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"Climate Characteristics and Major Meteorological Disasters in my country" PPT
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"Make an Ecological Bottle" Biology and Environment PPT Courseware 4
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"Maintaining Ecological Balance" Biology and Environment PPT Courseware 2
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"Maintaining Ecological Balance" Biology and Environment PPT Courseware 3
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"Seed Germination Experiment (2)" Biology and Environment PPT Download
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"Into the Microcosm" Small Particles and the Big Universe PPT Courseware 4
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