题目（一年级 · 变换几何）：



如图, 把它沿虚线折叠后的形状是（）。

选项：
A、


B、

<img class="imgSvg" id = "lwyz3cpsoaspnietr6a" src="data:image/svg+xml;base64,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"/>
C. $\square$


答案：B
解析：解B; 把这个正方形沿虚线对折两次，刚好是 4 个小正方形。