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ge li he qiao yong kong qi
Pages: 42-45
Year: Issue:  12
Journal: The Science for Juvenile

Keyword:  科学学青少年创造力科学发明;
Abstract: 尽可能多地说出或写出“不同的分隔物以及它们所分开的东西”。如,墙壁把房间隔开。答案越多越好,越奇特越好。
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