中职数学集合测试题一选择题:本大题共12 小题,每小题4 分,共48 分。
在每小题给出的四个选项中只有一项是符合题目要求,把正确选项写在表格中。
题号 1 2 3 4 5 6答案题号7 8 9 10 11 12答案1.给出四个结论:①{1,2,3,1}是由 4 个元素组成的集合②集合{1}表示仅由一个“1”组成的集合③{2,4,6}与{6,4,2}是两个不同的集合④集合{大于3 的无理数}是一个有限集其中正确的是 ( );A.只有③④B.只有②③④C.只有①②D.只有②2.下列对象能组成集合的是( );A.最大的正数B.最小的整数C. 平方等于1 的数D.最接近1 的数3.I ={0,1,2,3,4},M={0,1,2,3},N={0,3,4}, M (C I N ) =( );A.{2,4}B.{1,2}C.{0,1}D.{0,1,2,3}4.I ={a,b,c,d,e},M={a,b,d},N={b},则(C I M ) N =( );A.{b}B.{a,d}C.{a,b,d}D.{b,c,e}5.A ={0,3},B={0,3,4},C={1,2,3}则(B C) A =( );A.{0,1,2,3,4}B.C.{0,3}D.{0}6.设集合M ={-2,0,2},N ={0},则( );A.N =B.N ∈MC.N ⊂MD.M ⊂N7.设集合 A = {(x , y ) xy > 0}, B = {(x , y ) x > 0且y > 0}, 则正确的是();A. A B = BB. A B =C. A ⊃ BD. A ⊂ B8. 设集合 M= {x 1 < x ≤ 4}, N = {x 2 ≤ x < 5}, 则 A B = ();A. {x 1 < x < 5} B. {x 2 ≤ x ≤ 4}C. {x 2 < x < 4}D. {2,3,4}9. 设集合 M= {x x ≥ -4}, N = {x x < 6}, 则 M N = ();A.RB. {x - 4 ≤ x < 6}C.D. {x - 4 < x < 6}10.设集合 A = {x x ≥ 2}, B = {x x 2 - x - 2 = 0},则A B = ();A.B. AC. A {- 1}D. B11.下列命题中的真命题共有();① x =2 是 x 2 - x - 2 = 0 的充分条件② x≠2 是 x 2 - x - 2 ≠ 0 的必要条件③ x = y 是 x=y 的必要条件④ x =1 且 y =2 是 x -1 + ( y - 2)2 = 0 的充要条件A.1 个B.2 个C.3 个D.4 个12.设{1,2}⊂ M ⊆ {1,2,3,4},则满足条件的集合M 共有().A.1 个B.2 个C.3 个D.4 个二 填空题:本大题共 6 小题,每小题 4 分,共 24 分. 把答案填在题中横线上. 1.用列举法表示集合{x ∈ Z - 2 < x < 4}= ; 2.用描述法表示集合{2,4,6,8,10} =;3. {m,n }的真子集共 3 个,它们是;4. 如果一个集合恰由 5 个元素组成, 它的真子集中有两个分别是 B ={ a,b,c } ,C ={a,d,e },那么集合 A = ;5. A = {(x , y ) x - y = 3}, B = {(x , y ) 3x + y = 1}, 那么 A B =;6. x 2 - 4 = 0 是 x +2=0 的条件.I 三 解答题:本大题共 4 小题,每小题 7 分,共 28 分. 解答应写出推理、演算步骤. 1.已知集合 A= {x 0 < x < 4}, B = {x 1 < x < 7}, 求A B , A B .2.已知全集 I=R ,集合 A = {x - 1 ≤ x < 3}, 求C A .3.设全集 I= {3,4,3 - a 2 }, M = {- 1}, C I M = {3, a 2 - a + 2},求 a 值.4.设集合 A = {x x 2 - 3x + 2 = 0}, B = {x ax - 2 = 0},且A B = A , 求实数a 组成的集合M.“”“”At the end, Xiao Bian gives you a passage. Minand once said, "people who learn to learn are very happy people.". In every wonderful life, learning is an eternal theme. As a professional clerical and teaching position, I understand the importance of continuous learning, "life is diligent, nothing can be gained", only continuous learning can achieve better self. Only by constantly learning and mastering the latest relevant knowledge, can employees from all walks of life keep up with the pace of enterprise development and innovate to meet the needs of the market. This document is also edited by my studio professionals, there may be errors in the document, if there are errors, please correct, thank you!。