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2019年高考数学一轮复习 1-1集合的概念与运算检测试题(1)文1xx山东已知集合A0,1,2,则集合Bxy|xA,yA中元素的个数是()A1个B3个C5个 D9个解析:当x0,y2时,xy2;当x0,y1时,xy1;当xy时,xy0;当x1,y0时,xy1;当x2,y0时,xy2;当x2,y1时,xy1.所以,B2,1,0,1,2,故选C.答案:C2xx江西已知集合M1,2,zi,i为虚数单位,N3,4,MN4,则复数z()A2i B2iC4i D4i解析:由题意,得zi4,所以z4i,故选C.答案:C3xx课标全国已知集合Ax|x22x0,Bx|x,则()AAB BABRCBA DAB解析:Ax|x0或x2,Bx|xABR,故选B.答案:B4xx课标全国已知集合Mx|(x1)24,xR,N1,0,1,2,3,则MN()A0,1,2 B1,0,1,2C1,0,2,3 D0,1,2,3解析:由(x1)24,得x22x30,1x3.故Mx|1x3又N1,0,1,2,3,得MN0,1,2,故选A.答案:A5xx浙江设集合Sx|x2,Tx|x23x40,则(RS)T()A(2,1 B(,4C(,1 D1,)解析:Tx|4x1,RSx|x2,(RS)Tx|x1(,1,故选C.答案:C6xx湖北已知全集为R,集合Ax|x1,Bx|x26x80,则ARB()Ax|x0 Bx|2x4Cx|0x2或x4 Dx|0x2或x4解析:由题意知集合Ax|x1x|x0,集合Bx|x26x80x|2x4,RBx|x2或x4因此A(RB)x|0x2或x4,故选C.答案:C
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