襄阳五中2025届高三下学期5月适应性考试(一)数学
襄阳五中2025届高三下学期5月适应性考试(一)数学试题命题人:何宇飞胡晋审题人:曹标平一、选择题:本大题共8小题,每小题5分,共40分。在每小题给出的四个选项中,只有一项是符合题目要求的。1.已知集合A={x∨x2≤x},B={y∨y=2x,x>0},则A∪B=¿()A.RB.¿C.(0,1)D.[0,1]2.若复数z满足1+iz=i,则z的虚部为()A.−1B.1C.−iD.i3.点绕原点按逆时针方向旋转到达点,则点的坐标为()A.B.C.D.4.已知椭圆的两个焦点为(0,√2),(0,−√2),点(−1,√2)在该椭圆上,则该椭圆的离心率为()A.√22B.√24C.12D.145.设函...
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