在3和9之间插入两个正数，使前三个数成等比数列，后三个数成等差数列，则这两个数的 发布时间：2017-04-29 16:13 │ 来源：www.tikuol.com 题型：选择题 问题： 在3和9之间插入两个正数，使前三个数成等比数列，后三个数成等差数列，则这两个数的和是（ ）A．912B．1014C．1114D．1212
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