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bg1=bg1+"方格有多少"+""+"["+"2005-5-11"+"]"
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bg1=bg1+"方格有多少"+" | "+"["+"2005-5-11"+"]"
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bg1=bg1+"和 与 差"+" | "+"["+"2005-5-11"+"]"
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bg1=bg1+"普乔柯趣题"+" | "+"["+"2005-5-11"+"]"
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bg1=bg1+"鬼谷算"+" | "+"["+"2005-5-11"+"]"
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| "+""
bg1=bg1+"整数与偶数哪一种数多"+" | "+"["+"2005-5-11"+"]"
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bg1=bg1+"牛顿问题"+" | "+"["+"2005-5-11"+"]"
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| "+""
bg1=bg1+"鸡兔同笼"+" | "+"["+"2005-5-11"+"]"
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| "+""
bg1=bg1+"倒推转化巧拿硬币"+" | "+"["+"2005-5-11"+"]"
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