文档介绍：数学试题第1页(共4页)机密★启用前湖南省2010年普通高等学校对口招生考试数学试题时量120分钟总分:120分一、选择题(在本题共10小题,每小题4分,共40分。在每一小题给出的四个选项中,只有一项符合题目要求的)1、已知全集{1, 2, 3, 4, 5, 6}U?,集合{1, 2, 3, 4}M?,集合{2, 4, 6}N?,则( )UM N??e·······················································································()(A){1, 3}(B){1, 2, 3, 4, 5}(C){2, 4}(D){1, 2, 3, 4, 6}2、2a?是| | 2a?的······················································································()(A)充分不必要条件(B)必要不充分条件(B)充分必要条件(D)既不充分也不必要条件3、在三角形ABC中,内角A,B,C的对边分别为, ,a b c,已知45 , 105 , 2B C a? ??? ?,则b?··························································()(A)2(B)2(C)2 2(D)2 64、从7名志愿者中挑选3名,分别担任翻译、导游、导购工作,且每名志愿者都能胜任其中任一项工作,则不同的选派方法的种数是·························································()(A)3 37 3P P?(B)3 17 3P C?(C)37C(D)37P5、已知向量(4, 2), ( 1, )a b m? ?????且a?与b?共线,则m?···································()(A)12?(B)12(C)2?(D)26、过点(0, 1)?且垂直于直线2 4 0x y? ??的直线方程是······································()(A)2 1 0x y? ??(B)2 1 0x y? ??(C)2 2 0x y? ??(D)2 2 0x y? ??7、已知椭圆的中心在原点,长轴长是焦距的2倍,且它的一个焦