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IB/第 4 组/项目
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来自维客教科书，开放世界中的开放书籍
<
IB
|
第 4 组
与其他组的科目相比，第 4 组的科目较难，但很有趣。它们包括科学科目和基于 STEM 的科目。
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书籍：IB
华夏公益教科书
