2021年全国高考乙卷文科数学试卷试题 - 学进去中小学试卷试题库

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【单选】1．已知全集，集合，则（）
A． B． C． D．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】2．设，则（）
A． B． C． D．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】3．已知命题﹔命题﹐，则下列命题中为真命题的是（）
A． B． C． D．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】4．函数的最小正周期和最大值分别是（）
A．和 B．和2 C．和 D．和2
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】5．若满足约束条件则的最小值为（）
A．18 B．10 C．6 D．4
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】6．（）
A． B． C． D．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】7．在区间随机取1个数，则取到的数小于的概率为（）
A． B． C． D．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】8．下列函数中最小值为4的是（）
A． B．
C． D．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】9．设函数，则下列函数中为奇函数的是（）
A． B． C． D．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】10．在正方体中，P为的中点，则直线与所成的角为（）
A． B． C． D．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】11．设B是椭圆的上顶点，点P在C上，则的最大值为（）
A． B． C． D．2
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】12．设，若为函数的极大值点，则（）
A． B． C． D．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】13．已知向量，若，则_________．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】14．双曲线的右焦点到直线的距离为________．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】15．记的内角A，B，C的对边分别为a，b，c，面积为，，，则________．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】16．以图①为正视图，在图②③④⑤中选两个分别作为侧视图和俯视图，组成某个三棱锥的三视图，则所选侧视图和俯视图的编号依次为_________（写出符合要求的一组答案即可）．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】17．某厂研制了一种生产高精产品的设备，为检验新设备生产产品的某项指标有无提高，用一台旧设备和一台新设备各生产了10件产品，得到各件产品该项指标数据如下：
旧设备
9.8
10.3
10.0
10.2
9.9
9.8
10.0
10.1
10.2
9.7
新设备
10.1
10.4
10.1
10.0
10.1
10.3
10.6
10.5
10.4
10.5
旧设备和新设备生产产品的该项指标的样本平均数分别记为和，样本方差分别记为和．
（1）求，，，；
（2）判断新设备生产产品的该项指标的均值较旧设备是否有显著提高（如果，则认为新设备生产产品的该项指标的均值较旧设备有显著提高，否则不认为有显著提高）．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】18．如图，四棱锥的底面是矩形，底面，M为的中点，且．

（1）证明：平面平面；
（2）若，求四棱锥的体积．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】19．设是首项为1的等比数列，数列满足．已知，，成等差数列．
（1）求和的通项公式；
（2）记和分别为和的前n项和．证明：．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】20．已知抛物线的焦点F到准线的距离为2．
（1）求C的方程;
（2）已知O为坐标原点，点P在C上，点Q满足，求直线斜率的最大值.
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】21．已知函数．
（1）讨论的单调性；
（2）求曲线过坐标原点的切线与曲线的公共点的坐标．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】22．在直角坐标系中，的圆心为，半径为1．
（1）写出的一个参数方程;
（2）过点作的两条切线．以坐标原点为极点，x轴正半轴为极轴建立极坐标系，求这两条切线的极坐标方程．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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【单选】23．已知函数．
（1）当时，求不等式的解集;
（2）若，求a的取值范围．
- A Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- B 我是超长选项我是超长选项我是超长选项我
- C Monday1 Monday 1Monday 1Monday 1onday 1Mond1 Monday1
- D Tuesday
正确答案：B，您的答案：B,回答错误。

【解析】
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean euismod bibendum laoreet. Proin gravida dolor sit amet lacus accumsan et viverra justo commodo. Proin sodales pulvinar tempor. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Nam fermentum, nulla luctus pharetra vulputate, felis tellus mollis orci, sed rhoncus sapien nunc eget odio.

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旧设备	9.8	10.3	10.0	10.2	9.9	9.8	10.0	10.1	10.2	9.7
新设备	10.1	10.4	10.1	10.0	10.1	10.3	10.6	10.5	10.4	10.5

A．	B．
C．	D．

答题卡