20221~4DCCD5~8CBAB9.ACD10.AC11.AD12.BCD13.114.445615.816.17.1·················1ABC(0,)Csin0C······································2··································································································3(0,)A·························································································42·······················································································5sinDE······························································6DEF12sin23DEFSDEDF····························································································7···························································································8DEF·······································101EFDBCA2·······················································································5·································································································6·····································································72a2222c

昌平区2022年高三年级第二次统一练习数学试卷2022.5本试卷共6页，150分。考试时长120分钟。考生务必将答案答在答题卡上，在试卷上作答无效。考试结束后，将答题卡收回。第一部分（选择题共40分）一、选择题共10小题，每小题4分，共40分．在每小题列出的四个选项中，选出符合题目要求的一项.（1）已知集合}1|{},20|{xxBxxA,则BAU（A）}0|{xx（B）}21|{xx（C）}1|{xx（D）}20|{xx（2）若复数z满足i2i)(1z，则z（A）i1（B）i1（C）i1（D）i1（3）为倡导“节能减排，低碳生活”的理念，某社区对家庭的人均月用电量情况进行了调查，通过抽样，获得了某社区100个家庭的人均月用电量（单位：千瓦时），将数据按照]160,140[),140,120[),120,100[),100,80[),80,60[),60,40[分成6组，制成了如图所示的频率分布直方图.若该社区有3000个家庭，估计全社区人均月用电量低于80千瓦时的家庭数为（A）300（B）450（C）480（D）600（4）记nS为等差数列}{na的前n项和，若2,1253aaaS，则4a（A）4（B）7（C）8（D）9（5）已知双曲线)0,0(1:2222babyaxC的焦距为4，其右焦点到双曲线C的一条渐近线的距离为2，则双曲线C的渐近线方程为（A）xy2（B）xy3（C）xy2（D）xy（6）“2π”是“函数)sin()(xxf在区间)2π,0(上单调递减”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（7）如图，在正四棱柱1111DCBAABCD中，O是底面ABCD的中心，FE,分别是11,DDBB的中点,则下列结论正确的是（A）OA1//（B）EFOA1（C）OA1//平面1EFB（D）OA1//平面1EFB（8）已知直线01:yaxl与圆4)1(:22yxC相交于两点BA,，当a变化时，△ABC的面积的最大值为（A）1（B）2（C）2（D）22（9）已知函数)0(24)(2aaxaxxf，则关于x的不等式xxf2log)(的解集是（A）)4,(（B）)1,0(（C）)4,0(（D）),4(（