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| 测验你的智商 | |
| 作者姓名： | Kareem |
| 摘 要： | There are seven piglets in the following picture.Each of them can be separated by only three straightlines.Do you know how to draw the lines? 下图中共有七只小猪。只要在它们之中画上三条直线,它们就可被个别分开。你知道如何画出这三条直线吗? |
| 本文献已被 CNKI 等数据库收录！ | |
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