ideological and theoretical qualities and practical working ability, and strive to build a contingent of league cadres with positive work style and high quality. Hold a regular meting of the party secretary every fortnightly, arrange the work of the regiment, fedback the student information. Focus on training junior high school, junior high school secretary of the regiment branch to enable them to raise A firm political conviction, diligent and diligent learning spirit and practical and innovative work style.第一章 数与式第 5 课时 二次根式基础导练一、选择题1（2024 年锦州） 下列二次根式中属于最简二次根式的是 ( ) A. B. C. D.2.（2024 年南通）若 在实数范围内有意义，则 x 的取值范围是 （ ） A．x≥ B．x≥－ C．x＞ D．x≠ 3 若 m＝1＋，n＝1－，则代数式的值为 ( )A．9 B．±3 C．3 D．5二、填空题1.（2024 年衡阳）化简：×(－)＝________．2.若实数 x，y 满足＋2(y－1)2＝0，则 x＋y 的值等于________．3.若是整数，则正整数 n 的最小值为________．三、解答题1.（2024 年益阳）计算：＋30－.2.（2024 年威海）先化简，再求值：(－)÷，其中 x＝－2＋.参考答案一、选择题1. D 2.C 3.C二、填空题Strengthen the team connection, strengthen the knowledge education among the students (especially the first grade students), and promote the formation of good school spirit with the influence of the league members. All League branches should start with recommending outstanding students as the development objects of the League, take amateur league schools as the basis, conscientiously do a good job in the work of pre-league education, league membership education, League members' vanguard exemplary consciousness education, excellent league members' education, etc. Under the premise of ensuring the quality, the development quantity of league members will increase steadily, and the ranks of league me...
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