[教學] 130回--翹課的日子,要看教育頻道。
電視機前面的觀眾,大家好…
今天「簡單易懂科學教室」,要教大家「眼睛的錯覺」…!!
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請問直線(1)與直線(2),哪一條比較長呢?
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(1)
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(2) 0rz.net/7e0je
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