辽宁鞍山市海城市高级中学2025-2026学年高一下学期6月阶段练习数学试卷

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海城高中2025-2026学年下学期高一(2028届)6月阶段练习

数学试卷

命题人:高一数学组       审校人:高一数学组

时间:120分钟  满分:150分

一、单项选择题:本题共8小题,每小题5分,共40分.在每小题给出的四个选项中,只有一项符合题目要求.

1.已知复数,则(     )

A. B. C. D.

2.如图所示,梯形是平面图形用斜二测画法得到的直观图,,,则平面图形中对角线的长度为(     )

A. B. C. D.

3.已知平面向量,满足,且,,则向量与的夹角(     )

A. B. C. D.

4.如图,三棱柱中,点E,F,G,H分别为,,,的中点,则下列说法错误的是(     )

A.E,F,G,H四点共面 B.与是异面直线

C.,,三线共点 D.

5.圆台的一个底面圆周长是另一个底面圆周长的3倍,母线长为15,圆台的侧面积为,则圆台较小page number 0

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底面圆的半径为(     )

A.7 B.6 C.5 D.3

6.已知点是单位圆劣弧上一点,,以为原点,所在的直线为轴,建立平面直角坐标系,设,则,如图所示.若(,),则的取值范围是(     )

A. B. C. D.

7.如图,是圆的直径,,垂直于圆所在的平面,为圆周上不与点,重合的点,于,于,则下列结论不正确的是(     )

A.平面平面 B.平面

C.平面  D.平面平面

8.已知函数,若将其图象向左平移个单位得到函数的图象.在钝角中,内角,,的对边分别是,,,若,则的取值范围是(     )

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二、多项选择题,本大题共3个小题,每个小题6分,共18分,在每小题给出的四个选项中,有多项符合题目要求,全部选对得6分,选对但不全的得部分分,有选错的得0分

9.下列命题是真命题的是(     )page number 1

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