甲、乙两个水池共贮水40吨,若甲池再注入4吨,乙池放出8吨,则甲、乙两池水的吨数刚好相等,两个池水原来各
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甲、乙两个水池共贮水40吨,若甲池再注入4吨,乙池放出8吨,则甲、乙两池水的吨数刚好相等,两个池水原来各
贮水多少吨
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举一反三
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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