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发表于2024-11-28
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NATIONAL STANDARDS: Grades K-4 National Science Standards- Earth and Space Science: IV- Objects in the sky- The sun, moon, stars, clouds, birds, and airplanes all have properties, locations, and movements that can be observed and described.- Science and Technology: V- Tools help scientists make better observations
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Space 在线电子书 pdf 下载 txt下载 epub 下载 mobi 下载 2024