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"Movement and Breathing" We exercise on campus PPT courseware
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Compilation and presentation of data in "Little Shoe Store" PPT download
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"One Day's Domestic Water" Environment and Us PPT download
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"Observing and describing minerals (1)" Rocks and minerals PPT download
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"Average" Average and bar chart PPT download
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"Science and Technology and Sino-foreign Transportation in the Song and Yuan Dynasties" PPT download
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"The Theory and Practice of Scientific Socialism" PPT download
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"Seed Germination Experiment (1)" Biology and Environment PPT Download
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"Angle bisectors, midlines and heights of a triangle" PPT download
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"Mechanical Energy and Its Transformation into Potential Energy" PPT
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"Test in this Chapter" Simple Machinery PPT
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"Exercise and Brain" We exercise on campus PPT courseware
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