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发表于2024-11-24
Planets pdf epub mobi txt 电子书 下载 2024
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Where does the word "planet" come from? How long is a year on Mercury? What is the temperature on Venus? Is Pluto really a planet? This new Level 2 All Aboard Reading book will answer these questions and more about the solar system. The information is completely up to date and accurate-a perfect introduction for young skywatchers.
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Planets pdf epub mobi txt 电子书 下载 2024