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1、2010 年高考选填冲刺卷(7)曲靖 2010(2)1.设集合,则为( )22Mx xxln(2)Nx yxMNIA. B. C. D. 0,2)(0,2)0,2( 1,02.若,则复数的虚部为( ) 11iiz zA. 0 B. C. D. 1123.已知,则( )tan222sin1 sin2 A. B. C. D. 5 313 413 513 44.若,则( )31log0,( )13ba A. B. C. D. 1,0ab01,0ab1,0ab01,0ab5.,则的值为( 201022010 0122010(1 3 )()xaa xa xaxxRL201012 22010333aaaL
2、)A. 2 B. 0 C. D. 126.设双曲线的渐近线与抛物线相切,则该双曲22221(0,0)xyabab22yx线的离心率等于( ) A. B. 3 C. D. 45107.已知函数在处连续,则常数的值为( )32log(1) ( )1(1)1ax x f xxxx1x aA. 1 B. 2 C. 3 D. 48.已知是偶函数,当时,当时,( )yf x0x 4( )f xxx 3, 1x 恒成立,则的最小值是( ) ( )nf xmmnA. B. C. D. 1 22 3129. 设的三个内角为,向量ABC, ,A B C若,则为( (sin, 3cos),( 3cos,sin),m
3、BB nCCu rr1 cos()m nBC u r rgA) A. B. C. D. 5 62 3 3 610.如图是一个棱长为 2 的正四面体为的中点,则与平面,PABC EPCAE所成角的正弦值为( )ABCA. B. C. D. 2 33 26 32 2 311.已知 M 在不等式组所表示的平面区域上,点 N 在20 344 30x xy y 曲线上,那么的最小值是( )22430xyxMNA. B. C. D. 1 212 10132 10 312.半径为 2 的球面上有 P、M、N、R 四点,且 PM、PN、PR 两两垂直,则的最大值为( ) PMNPMRPNRSSSA. 8 B.
4、 12 C. 16 D. 2413. 设等差数列的前项和为,若则 nannS24924,aaa9S 14.在某校举行的数学竞赛中,全体参赛学生的成绩近似服从正态分布已知成绩在 90 分以上(含 90 分)的学生有 12 名,问此次参赛的学(70,100),N生的总数约为 人。(参考数据:)(2)0.977215. 3 位男生和 3 位女生共 6 位同学站成一排,若男生甲不站两端,3 位女生中有且只有两位女生相邻,则不同排法的总数是 。16.已知椭圆的左焦点为,左准线为 ,点线段交椭圆2 2:12xCyFl,AlAF于点,若,则 。CB3FAFBuu u ruu u rAF uuu r内部资料
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