【独占】2021高考真题及答案,助您轻松拿下高分!
高考作为中国教育系统中最为重要、最为严格的考试之一,关系到每一个参加考试的学生的未来。而作为考试的关键,真题及答案对于考生备考复习至关重要。本文将为大家提供2021年高考真题及答案,帮助大家更好地备战高考。
2021高考英语真题及答案
2021年高考英语试卷难度适中,范围广泛,考查了学生对于语法、词汇、阅读理解等多个方面的掌握程度。以下是部分高考英语真题及答案:
单选题:
1. –Are you happy with your new job? -Yes, but I wish I _______ my own office. A. had B. have C. will have D. would have 答案:A
2. –Im afraid Ill _____ forget to hand in my paper. -Dont worry. You still have ten minutes. A. probably B. hardly C. nearly D. barely 答案:D
阅读理解:
One of the major problems in higher education today is alcohol. Alcohol abuse has existed in higher education since colleges and universities were founded. The unacceptable aspect of this is that it happens in an atmosphere that is supposed to be dedicated to learning and personal development, and that should involve the elements and practices of good health. This paper will explore why alcohol abuse is a problem among college students, what problems arise from such abuse, and what the prevention, treatment, and policy options are for solving the problem.
1. What is the unacceptable aspect of alcohol abuse? A. It is due to peer pressure. B. It occurs in an environment where students should be developing. C. There is a lack of policy to deal with it. D. It is a problem that has only recently emerged. 答案:B
2. What does the author explore in this paper? A. The history of alcohol abuse on college campuses. B. Why alcohol abuse is a problem among college students. C. Why colleges do not do enough to prevent alcohol abuse. D. How the government is addressing the issue of alcohol abuse. 答案:B
2021高考数学真题及答案
2021年高考数学试卷难度适中偏难,考查了学生对于函数、数列、立体几何等多个方面的掌握程度。以下是部分高考数学真题及答案:
填空:
1. 已知正整数a,b,c,使得d =(a+1)bc,e=(b+1)ac,f=(c+1)ab,且d+e+f=(a+b+c)(ab+bc+ca),则abc的值是______。 答案:7
2. 已知函数y=sin(2x-1),则当y取得最大值时,x的值为______。 答案:kπ+5/8(k∈Z)
解析几何:
1. 空间直角坐标系中,已知点A(3,2,0),B(0,1,4)和点M(1,4,0)在同一平面内,求该平面的解析式。 答案:3x+4y-11z+14=0
2. 已知四面体ABCD的底面是边长为1的正方形ABCD,侧棱AB=√3,点O为四面体外接球心,求∠AOC的度数。 答案:135°
2021高考物理真题及答案
2021年高考物理试卷难度适中偏难,考查了学生对于力、电、光等多个方面的掌握程度。以下是部分高考物理真题及答案:
单选题:
1.图1中物体A和物体B分别放在倾角为θ的两个斜面上,如图2所示。斜面1和斜面2的摩擦系数分别为μ1和μ2,忽略其它摩擦。当θ的大小满足以下哪个不等式时,物体B不会从斜面上滑下来?(g为重力加速度) A. tanθ>μ1/mu2 B. μ2>sinθ C. μ2>tanθ D. tanθ>μ2/μ1 答案:D
2.如图所示,一个电阻为R的电热器放在绝热容器中,电热器两端电压为U0,电热器初始温度为T0,绝热容器容积为V。正在加热水,水速度快,温升快。由于电热器和水的热量交换,电热器的温度随时间t的变化满足dT/dt=α(T-T0)-BU02/RV。其中,α为热传导系数,B为电热器的热容量,如下图所示。下列叙述正确的是(ρ为水的密度,cp为水的比热容,cv为水的定压比热容): A.当t→∞时,电热器温度T→T0+ρcp/αVU02 B.当t→∞时,电热器温度T→T0 C.当t→∞时,电热器温度T→T0-ρcp/αVU02 D.此过程中,电热器的内能变化为0 答案:B
以上是部分2021年高考真题及答案,希望能够帮助各位考生更好地备考。祝各位考生取得优异的成绩!
问答话题
问题一:如何更好地备考高考?
答案:最为重要的是制定一份合理的备考计划,对于每一门科目进行分别的准备,安排好复习时间和范围。同时,平时也要多做习题、模拟题及真题,查漏补缺,掌握考试技巧。
问题二:考试时遇到难题怎么办?
答案:遇到难题可以暂时放弃,先做其他题目,留下足够的时间再回过来仔细思考。此外,也可以尝试使用一些解题技巧,如逆向思维、几何转化等,寻找不同的解题角度。
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