老年生活准则，风趣幽默
关注：老刘的心灵鸡汤，每天都能收到这样的好文章！
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与老年朋友们共勉！
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最后给大家出道趣味数学题，您试试能否做出来！
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你能否根据下图
求出桌子的高度吗？
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从以下5个答案中选取：
A)110cm B)120cm C)130cm D)140cm E)150cm
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这道题的确有点难度，你做出来了吗？请把答案写在留言里告诉大家吧~
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