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杜桥中学2014学年第二学期高二年级第一次统练数学(理科)试题满分100分,考试时间120分钟一、选择题(本大题共25小题,1—15每小题2分,16—25每小题3分,共60分.每题给出的四个选项中,只有一项符合题目要求.不选、多选或选错均得0分)1.设全集SKIPIF1<0,集合SKIPIF1<0,集合B=SKIPIF1<0,则SKIPIF1<0()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<02.在下列函数中,函数的图象关于坐标原点对称的是()A.B.C.D.3.函数SKIPIF1<0的定义域是()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<04.设SKIPIF1<0是等比数列,则“SKIPIF1<0”是“数列SKIPIF1<0是递增数列”的()A.充分而不必要条件B.必要而不充分条件C.充分必要条件D.既不充分也不必要条件5.已知SKIPIF1<0,则SKIPIF1<0、SKIPIF1<0、SKIPIF1<0的大小关系是()A.SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0B.SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0C.SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0D.SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<0SKIPIF1<06.下列通项公式表示的数列为等差数列的是()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<07.若SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,SKIPIF1<0成等比数列,则()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<08.函数SKIPIF1<0的图象()A.关于点SKIPIF1<0对称B.关于直线SKIPIF1<0对称C.关于点SKIPIF1<0对称D.关于直线SKIPIF1<0对称9.函数y=cos2x在下列哪个区间上是减函数()A.SKIPIF1<0B.C.D.10.已知等差数列SKIPIF1<0的前SKIPIF1<0项和为SKIPIF1<0,则SKIPIF1<0()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<011.函数的图象大致是()12.已知角为第二象限角,则()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<013.设等比数列的前项和为,且,,则SKIPIF1<0()A.60B.70C.90D.4014.下列四个函数中,是奇函数且在区间(-1,0)上为减函数的是()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<015.函数y=sin(2x+φ)的图象沿x轴向左平移个单位后,得到一个偶函数的图象,则φ的一个可能的值为()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<016.在钝角中,,,则的面积为……()A.B.C.D.17.已知函数SKIPIF1<0是SKIPIF1<0上的偶函数,且在SKIPIF1<0上是减函数,若SKIPIF1<0,则实数SKIPIF1<0的取值范围是()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<018.设SKIPIF1<0,则满足SKIPIF1<0的SKIPIF1<0的取值范围是()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<019.在等差数列SKIPIF1<0中,已知SKIPIF1<0,SKIPIF1<0,SKIPIF1<0,则SKIPIF1<0()A.SKIPIF1<0B.SKIPIF1<0C.SKIPIF1<0D.SKIPIF1<0