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1、1八年级第一学期期中联考数学试卷八年级第一学期期中联考数学试卷 学校： 班级： 姓名： 座号： 一、选择题：（每题一、选择题：（每题 3 3 分，共分，共 3636 分）分）1在下列各数, , , ，, 3.1415, 2.(相邻两个 1 之间有 1 个 0)722458中，是无理数的有（ ） A. 1 个 B. 2 个 C. 3 个 D. 4 个2已知三组数据：2，3，4；3，4，5；1， ，2分别以每组数据中的三个数3为三角形的三边长，构成直角三角形的有（ ）A B C D 39 的算术平方根是（ ）A. 3 B. C. D.333 4.下列各式中正确的是 （ ）A. B. C. D. 5
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