河南省周口市中英文学校高三上学期期中考试

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2021届河南省周口市中英文学校高三年级上学期期中考试英语试题及答案

绝密★启用前河南省周口市中英文学校2021届高三年级上学期期中教学质量检测英语试题2020年11月第Ⅰ卷（选择题共95分）第二部分：阅读理解（共两节，满分40分）第一节（共15小题；每小题2分，共30分）阅读下面短文，从每题所给的A、B、C、D 四个选项中选出最佳答案。

AAmerican track and field athlete Jacqueline Joyner-Kersee once said，“Age is no barrier. It's a limitation you put on your mind.” And50-year-old Indian Lakyntiew Syiemlieh stands an evidence for this saying. She recently cleared her Class 12 board exams. Lakyntiew，who has four children and two grandchildren， decided to go after her higher secondary education over three decades after dropping out of school. Earlier this year， she was one of the 24，267 students who appeared for the state board's Higher Secondary School Leaving Certificate(HSSLC) exam. Lakyntiew took part in the exams for the arts stream and had chosen subjects like Khasi，English， Political Science， Economics， and Education as her areas of specialization.On July 13，2020，when the results were announced， she was excited. “Though I only got the third division(分段)，my children were still so excited that they started shouting， hugging， and kissing me when the results were declared，"said Lakyntiew.In fact，the grandmother of two has expressed her interest in pursuing(追求) higher studies in the field of local language. Lakyntiew took up a distance education course offered by a university in 2015. She stopped goingto school because mathematics was too difficult for her to understand. She was offered a job to teach in a preschool in 2008， and that was the beginning of her love for re-learning.Being the oldest student in the class， most of Lakyntiew's classmates called her as "Mei”，which means “mother” in the local language. Besides concentrating on academics，she also participated in after-class activities like field trips， dance competitions， and singing challenges， among others.Age is not a problem when one is in search of education. Lakyntiew Syiemlieh is an example for everybody，and especially for those who give up studies midway.21．When did Lakyntiew probably drop out of school?A．In 2008. B．In 1998. C．In 1988. D．In 1968. 22．Which of the following caused Lakyntiew to stop going to school? A．Her family was too poor to afford her education.B．She had too much difficulty in learning one subject.C．She was offered so good a job that she couldn't refuse.D．She had many children to raise and had no time to study.23．Which can best describe Lakyntiew's performance at school? A．Independent. B．Reasonable. C．Outstanding. D．Active. 24．What can we learn from Lakyntiew's story?A．Live and learn. B．Hard work pays off.C．Many hands make light work. D．Education is the key to success.BAs an elementary school student in New York City， Robert Lee would stare in disbelief at his classmates throwing away half-eaten sandwiches after lunch. His Korean immigrant parents had taught him not to waste food.。

河南省周口中英文学校2020届高三英语上学期期中试题

河南省周口中英文学校2020 届高三英语上学期期中试题第I卷（选择题共95分）第二部分：阅读理解（共两节，满分40 分）第一节（共15 小题；每小题 2 分，共30 分）阅读下面短文，从每题所给的A、B、C、 D 四个选项中选出最佳答案。

ASomeidiomatic phrases in English, often used in both spoken and written language, are very confusing! Th ey don ' t even make sense when you first see them. However,using one of these phrases correctly when speaking or writing to an English speaker is very impressive and shows that you are comfortable with the language. Here are some wonderful and interesting British idioms. Use them wisely.When pigs fly!This expression is one of my favorites and I use it all the time. It is usedprimarily when speaking, meaning that something is extremely unlikely or impossible. For example, “I will forgive him when pigs fly! ” “ When do you think you will geta gym membership, Lucy? ” “ When pigs fly! ”A penny for your thoughts?This question is used in a situation where someone appears thoughtful or is very quiet seeming lost in thought. But remember that you don' t actually have to pay them a penny if they do tell you what is going on! For example, “ You' ve been a bit quietthis evening, Pete. A penny for your thoughts? ”It ' s the bee ' s kneesThe phrase dates back to the 1920s, and refers to an extraordinary person, thing, idea, a nd so on. For example, “ Try this chocolate. It ' s the bee ' s knees. ”To feel a bit under the weatherI use this expression in many different situations but most use it to refer to feeling ill, or unwell. You would not use this phrase if you were feeling extremely unwell. It is only for those times when you are feeling a little ill or suffering from something slightly like a cold or a cough. However, this can also be used torefer to feeling emotionally low.21. What will you say if you think something is special?A. When pigs fly!B. A penny for your thoughts?C. To feel a bit under the weather. D . It ' s the bee ' s knees22. Which of the following sentence can replace “ A penny for your thoughts? ”A. What are you thinking about?B. What can I do for you?C. How are you feeling?D. How do you like it?23. Why does the author write the passage?A. To show how to remember idioms.B. To introduce some useful idioms.C. To tell people the importance of idioms.D. To arouse the interest in idioms.BMom and Dad are two of the most important people in your life. You probablysee at least one of them every day. If your dad worships( 崇拜) the Pittsburgh Stealers, you' re likely to grow up being a big fan of that football team. And if your momlov es to read, you just might grow up carrying a book wherever you go, just like she does.Here are four ways you can stay close and build a strong relationship with your parents.(1) Spent time together. How much time do you spend just enjoying each other ' s company?Instead of playing a computer game or watching TV, maybe you can ask your mom and dad to play with you. Go outside together, try a board game, or read a book out.(2) Share your feelings and ask for help. Your mom or dad might not know that you ' re having a problem. Tell a parent if you ' re sad or struggling withsomething.(3) Show your care. Some families are always kissing, hugging, and saying “ Ilove you” . It ' s important to show that you care for each other. In additionto kisses and hugs, kids and parents show their love by respecting each other, being caring, polite, and thoughtful.(4) Whatever you do, do your best! You don' t have to be perfect,but when you do your best, you make your parents proud. It makes them happy to see how you ' re turning into such a great kid. Why? Because it lets them know doing a good job.24.The first paragraph mainly tells us .A. the Pittsburgh Stealers is a famous football teamB. the kid will like reading if his or her mother likesC. parents influence their kids greatlyD. we should follow our parents' hobbies25.In the third paragraph, the author suggests thatA. you keep your parents company all the timeB. you stay at home with your parentsC. you enjoy games when your parents watch TVD. you do something together with your parentsA. they have very good jobsB. their jobs can bring the family much moneykidD. they make you find a good job 27. The text intends to tell useveryoneB. how we get along with our parents parentsD. to share feelings with our parentsWhenwe think of a generation gap we usually think of conflicting tastes in music, or pastimes. Butnow the generation gap is handwriting. After one teacher in Tennessee discovered that she hadthey ' re26.The underlined partthey ' re doing a good job ” meansC.they make you become greatA.parents are important toC. to respect ourstudents who couldn ' t read the assignments she was writingon the board, she posted it on the Internet saying handwriting should be taught in schools.Opponents claim that handwriting has become out of time in our modern world. Typed words have become a primary form of communication. Once a practical skill, handwriting is no longer used by the vast majority of Americans. It is no longer taught in schools, and some claim that the time that it would take to teach it could be put to better use, for instance, by teaching the technical skills.But even in today ' s world there are still plenty of reasons to pick up a pen and apply it to paper. Many American institutions still require original signatures,for instance, signing for a registered letter and buying a house. And original signatures are much more difficult to forge （伪造）than their digital counterparts.There is also strong evidence that writing by hand is good for the mind. It activates a different part of the brain, and improves fine moving skills in young children.People also tend to remember what they write by hand more than what they type, and the process of writing by hand has been shown to stimulate ideas. Not only that, studies have shown that kids who write by hand learn to read and spell earlier than those who don' t. Not to mention, handwriting is pleasing, as is evidenced by the fact that no one has ever typed a love letter. And handwriting remains popular as an art form.Yes we live in a modern world, but we live in a modern world that is based on fundamental values.28. What did the teacher find in her class?A. Her students had a big generation gap with her.B. Her handwriting was too terrible to understand.C. Some stu dents ' handwriting on the blackboard was too difficult to tell.D. Some students could not recognize her handwriting on the blackboard.29. Why do some people agree to teach handwriting in school?A. Handwriting is beneficial to the brain.B. Handwriting is very easy to remember.C. Handwriting can help one buy a house.D. Handwriting is an art form out of time.30. What can we infer from the passage?A. Lovers often write love letters to each other.B. What people write by hand is not easy to fake.C. Handwriting is unnecessary in our modern society.D. Technical skills are more important than handwriting.31. What is the authors attitude towards teaching handwriting in school?A. Opposed.B. Objective.C. Supportive.D. Unconcerned.DChina officially informed the World Trade Organization on Tuesday that it will ban the import of 24 different types of solid waste by the end of this year as part of a campaign to deal with environmental pollution and protect people ' s health.In response to growing public concerns over the potential environmental and health danger caused by the increasing amounts of solid waste imported into the country for recycling and treatment, China passed a special law in 1995 to control imports of waste materials, such as plastics, slag from steelmaking, unsorted scrap paper and discarded textile materials.A year later, the country published a list for solid waste imports and began implementing a permit system to control the import volumes and types of waste imported.However, due to the lack of effective supervision （监管）and the failure of relevant departments to fulfill their duties, solid waste imports have not been effectively controlled.So far, China is the world ' s largest importer of solid waste. According to theMinistry of Environmental Protection, China imported 7.3 million metric tons of plastic waste worth $3.7 billion in 2016, accounting for 56 percent of global imports of solid waste.Correct recycling of solid waste materials is an important part of the global economy, and moderate imports of scrap plastic, scrap paper and scrap rubber products, such as vehicle tires, can to some extent, make up for China's shortage of various raw materials.However, the lack of supervision has resulted in the country ' s severe soil and environmental worsening.Given that China ' s continuing efforts to push for industrial transformation and upgrading have resulted in a noticeable decline in the demand for the materials recycled from solid waste imports. It is right for the country to restrict such imports for the sake of the environment and public health, and tobetter adapt to the changed industrial structure.32. Why will China ban the import of some waste materials?A. The amount of imported solid waste is increasing.B. The demand for imported solid waste is in decline.C. People are more concerned about the environment and health now.D. Some solid waste has damaged the environment and public health.33. Which phrase has the same meaning as the underlined word?A. Putting off.B. Carrying out.C. Calling off.D.Fighting against.34. What is the problem when China deals with the imported waste?A. Some imported waste is difficult to control.B. Some departments haven ' t shouldered their duties.C. The environment can ' t afford the impor ted waste.D. Some useful materials are also among the solid waste.35. What can we learn from the passage?A. China will not rely on importing solid waste any more.B. Solid waste plays an important part in the global economy.C. Some imported waste can release the urgent need for raw materials.D. People are against importing solid waste from developed countries. 第二节（共5 小题；每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。

2021届河南省周口市中英文学校高三年级上学期期中考试数学试题及答案

(文科学生做)已知函数的导数为 ,且满足关系式 ,则的值等于（）
A． B． C．2 D．
9. 的图像大致是（）
10．《九章算术》是我国古代著名数学经典,其中对勾股定理的论述,比西方早一千多年,其中有这样一个问题：“今有圆材埋在壁中,不知大小；以锯锯之,深一寸,锯道长一尺,问径几何？”其意为：今有一圆柱形木材,埋在墙壁中,不知其大小,用锯去锯该材料,锯口深1寸,锯道长1尺,问这块圆柱形木料的直径是多少？长为0.5丈的圆柱形木材部分镶嵌在墙体中,截面图如图所示（阴影部分为镶嵌在墙体内的部分）.己知弦尺,弓形高寸,估算该木材镶嵌墙内部分的体积约为（）．（注：一丈=10尺=100寸, ,答案四舍五入,只取整数）
∵(∁RA)∩B＝B,∴B⊆∁RA.——————
①若B＝∅,则m≥0；——————-7分
②若B≠∅,则m<0,
∴2x≤－m,∴x≤log2(－m)．
∵B⊆∁RA,∴log2(－m)≤1,
即log2(－m)≤log22,因此0<－m≤2,－2≤m<0.
综上所述,实数m的取值范围是[－2,＋∞)．——————10分
18、（本大题共两小题,每小题6分,共12分）
1) 3sinα＋cosα＝0⇒cosα≠0⇒tanα＝－ ,
＝＝
＝＝ .————————6分
2）∵f(α)＝
＝＝＝ ,
∴f ＝＝＝＝ .——————12分
19．（本大题12分）
(1)因为 ,所以 ; 由 ,即 ,
(2)由(1)得 ,由得,
绝密★启用前
河南省周口市中英文学校
2021届高三年级上学期期中教学质量检测
数学试题
2020年11月
时间 120分钟满分150分

河南省周口市中英文学校2021届高三上学期期中考试数学试题含答案

f (2) 的值等于（）
A． 2
B． 9 4
9
C．2
D．
4
9.
覸ፚⵠ
ʅ
ln ፚ ȁ
ፚ
的图像大致是（
）
A
B
C
D
10．《九章算术》是我国古代著名数学经典，其中对勾股定理的论述，比西方早一千多年，其中有这样一个问题：“今有圆材埋在壁中，不知大小；以锯锯之，深一寸，锯道长一尺，问径几何？”其意为：今有一圆柱形木材，埋在墙壁中，不知其大小，用锯去锯该材料，锯口深 1 寸，锯道长 1 尺，问这块圆柱形木料的直径是多少？长为 0.5 丈的圆柱形木材部分镶嵌在墙体中，截面图如图所示
2
4
2
当 1 ≤ x 1 时,解得 1 ≤ x 5
2
2
8
所以 f (x)
2 1的解集为 x
2
x
5
8
4
8
20、（本大题 12 分）
(1)因为二次函数 f(x)满足 f(0)＝f(1)＝0，所以其对称轴为 x＝1. 2
又 f(x)的最小值是－1， 4
故
f(x)＝a
x－1 2
2－1.
4
因为 f(0)＝0，所以 a＝1，故 f(x)＝x2－x.————————5 分
x
（1）当 a 2 时，求曲线 y f x 在点 1, f 1 处的切线方程．
（ 2 ）如果函数 g x f x 2x 在 0, 上单调递减，求 a 的取值范围．
( 3 )当 a 1 时，求函数 f x 在区间 1，a2 上最大值和最小值 e
22. （本大题 12 分）
已知函数 f x x 1 ex ax2 （ e 是自然对数的底数）（1）判断函数 f x 极值点的个数，并说明理由；（2）若 x 0 ， f x ex x3 x ，求 a 的取值范围.

河南省周口中英文学校12—13学度高三上期中考试卷(实验班)—英语

河南省周口中英文学校12—13学度高三上期中考试卷（实验班）—英语第Ⅰ卷(共115分)第一部分：听力明白得(共两节。

满分30分)第一节(共5小题：每小题1.5分，满分7.5分)听下面5段对话。

每段对话后有一个小题，从题中所给的A、B、C、三个选项中选出最佳选项，听完每段对话后，你都有10秒钟的时刻来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1.How much does each stamp cost?A. Fifteen centsB. Sixty centsC. Thirty cents2. What is the relationship between the two speakers?A. Teacher and studentB. Boss and workerC. Classmates3. What does the woman mean?A. Karen has to change her schedule.B. Karen can take her to the airport.C. Karen will attend the meeting.4. What can we learn about the man?A. He looks fit now.B. He works in a gym.C. He no longer drinks beer.5. Why is the woman so angry?A. Because her company is losing money.B. Because her boss has insulted her in public.C. Because she has been under a lot of pressure.第二节(共15小题，每小题1.5分，满分22.5分)听下面5段对话或独白。

每段对话或独白后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，听每段对话或独白前，你将有时刻阅读各个小题，每小题5秒钟；听完后，各小题将给出5秒钟的作答时刻。

河南省周口中英文学校高三化学上学期期中试题

河南省周口中英文学校高三化学上学期期中试题说明：1．本试卷分第一卷选择题和第二卷非选择题两局部，总分值100分，考试时间90分钟。

2．请将你的答案写在答题卡相对应的位置上，否那么不予记分，坚持卷面整洁。

3．能够用到的相对原子质量：H ：1 O ：16 C ：12 S ：32 K ：39 Fe ：56 Na ：23 N ：14 Mg ：24 Cl：35.5 BaSO4 233 CuSO4 160 CuSO45H2O 250第一卷一、选择题〔每题只要一个正确选项,每题3分，共54分〕1．用N A表示阿伏加德罗常数的值，以下说法正确的选项是( )A．含0.1 mol Na2O2的晶体中阳离子与阴离子总数为0.4N AB．46 g NO2和N2O4的混合气体中含有的氧原子数为2N AC．1 mol Fe与一定量硝酸恰恰完全反响时，转移电子数一定为3N AD．1 mol CH4与过量氯气发作取代反响，生成CH3Cl气体的体积约为22.4 L2．同温同压下，a g甲气体和2a g乙气体所占体积之比为1∶2，依据阿伏加德罗定律判别，以下表达不正确的选项是( )A．同温同压下甲和乙的密度之比为1∶1B．甲与乙的相对分子质量之比为1∶1C．同温同体积上等质量的甲和乙的压强之比为1∶1D．等质量的甲和乙中的原子数之比一定为1∶13．如图是某学校实验室从化学试剂商店买回的硫酸试剂标签上的局部外容。

以下说法正确的选项是( )硫酸化学纯 CP 500 mL品名：硫酸化学式：H2SO4相对分子质量：98密度：1.84 g/cm3质量分数：98%A．该硫酸的物质的量浓度为9.2 mol/LB．1 mol Fe与足量的该硫酸反响发生2 g氢气C．配制200 mL 4.6 mol/L的硫酸需取该硫酸50 mLD．等质量的水与该硫酸混合后所得溶液的物质的量浓度大于9.2 mol/L4．以下有关说法中正确的选项是( )A．有单质生成的反响一定是氧化恢复反响B．焰色反响是元素表现出来的化学性质C．由两种元素组成，原子个数比为1∶1的物质一定是纯真物D．能与酸反响产物中有盐和水的氧化物不一定是碱性氧化物5．以下说法正确的选项是( )A．淀粉、纤维素等高分子化合物均属于纯真物B．非金属氧化物都是酸性氧化物C．食醋、纯碱、食盐区分属于酸、碱、盐D．丁达尔效应可用于区别溶液与胶体6．在给定的四种溶液中，一定能少量共存的微粒组是( )A．常温下，酸性溶液中：Ba2＋、K＋、Br－、SiO2－3B．常温下葡萄糖溶液中：SCN－、Cl－、K＋、NH＋4C．溴水中：Na＋、CO2－3、NH＋4、SO2－4D．常温下，pH大于7的溶液：Na＋、Ba2＋、SO2－3、Cl－7．以下离子方程式书写正确的选项是( )A．廓清石灰水与过量的小苏打溶液反响：Ca2＋＋OH－＋HCO－3===CaCO3↓＋H2OB．酸性高锰酸钾溶液与稀草酸反响：5C2O2－4＋2MnO－4＋16H＋===2Mn2＋＋10CO2＋8H2OC．AgCl的悬浊液中滴加Na2S溶液：2AgCl＋S2－===Ag2S＋2Cl－D．NH4HCO3溶液参与过量NaOH溶液加热：NH＋4＋OH－===NH3•H2O8．在混合体系中，确认化学反响先后顺序有利于效果的处置，以下反响先后顺序判别正确的选项是( )A．在含等物质的量的FeBr2、FeI2的溶液中缓慢通入Cl2：I－、Br－、Fe2＋B．在含等物质的量的Fe3＋、Cu2＋、H＋的溶液中参与Zn：Fe3＋、Cu2＋、H＋C．在含等物质的量的Ba(OH)2、KOH的溶液中通入CO2：KOH、Ba(OH)2、BaCO3、K2CO3D．在含等物质的量的AlO－2、OH－、CO2－3的溶液中，逐滴参与盐酸：AlO－2、Al(OH)3、OH－、CO2－39．将磁性氧化铁放入稀硝酸中可发作如下反响：3Fe3O4＋28H NO3===9Fe(NO3)x＋NO↑＋14H2O，以下判别合理的是( )A．Fe(NO3)x中x为2B．磁性氧化铁中的铁元素全部被氧化C．稀硝酸在反响中只作氧化剂D．反响中每生成0.4 mol恢复产物，就有1.2 mol电子转移10．在给定条件下，以下物质之间的转化能完成的是( )①C ――→O 2/扑灭CO 2――→C/高温CO ②Si ――→O 2/扑灭SiO 2――→H 2O H 2SiO 3 ③饱和NaCl(aq)――→NH 3、CO 2NaHCO 3――→加热Na 2CO 3 ④Mg(OH)2――→HCl aq MgCl 2(aq)――→加热无水MgCl 2 ⑤NH 3――→O 2/催化剂、加热NO ――→O 2NO 2――→H 2O HNO 3A ．①③⑤B ．②③④C ．②④⑤D ．①④⑤11．香烟烟雾中往往含有CO 和SO 2气体，以下关于它们的说法中正确的选项是( ) A ．两者都易溶于水 B ．两者都是构成酸雨的主要缘由 C ．两者都能使品红溶液褪色 D ．两者都污染环境，危害安康12．氯水的性质多样，以下对氯水的性质和表达相应性质的缘由说法均正确的选项是〔〕选项氯水的性质缘由A新制氯水呈无色氯气溶于水时与水反响生成HCl 和HClO ，HCl 和HClO都是无色的B 氯水能使KMnO 4溶液褪色氯水中存在HClO ，HClO 有漂白性C久置氯水不能使白色纸条褪色氯水中的HClO 有漂白性，但不动摇，久置进程中HClO 见光分解了D氯水中滴加硝酸银溶液，出现白色沉淀氯水蜕变了，HClO 分解促进了Cl 2与水反响的平衡正移，该氯水曾经蜕变为了稀盐酸。

2021届河南省周口市中英文学校高三上学期期中英语试题(解析版)

周口中英文学校2020-2021学年上期期中考试英语试题第Ⅰ卷（选择题共95分）第二部分：阅读理解（共两节，满分40分）第一节（共15小题；每小题2分，共30分）阅读下面短文，从每题所给的A、B、C、D 四个选项中选出最佳答案。

AAmerican track and field athlete Jacqueline Joyner-Kersee once said,“Age is no barrier. It's a limitation you put on your m ind.” And 50-year-old Indian Lakyntiew Syiemlieh stands an evidence for this saying. She recently cleared her Class 12 board exams. Lakyntiew,who has four children and two grandchildren, decided to go after her higher secondary education over three decades after dropping out of school. Earlier this year, she was one of the 24,267 students who appeared for the state board's Higher Secondary School Leaving Certificate(HSSLC) exam. Lakyntiew took part in the exams for the arts stream and had chosen subjects like Khasi,English, Political Science, Economics, and Education as her areas of specialization.On July 13,2020,when the results were announced, she was excited. “Though I only got the third division(分段)，my children were still so excited that they started shouting, hugging, and kissing me when the results were declared,"said Lakyntiew.In fact,the grandmother of two has expressed her interest in pursuing(追求) higher studies in the field of local language. Lakyntiew took up a distance education course offered by a university in 2015. She stopped going to school because mathematics was too difficult for her to understand. She was offered a job to teach in a preschool in 2008, and that was the beginning of her love forre-learning.Being the oldest student in the class, most of Lakyntiew's classmates called her as "Mei”, which means “mother” in the local language. Besides concentrating on academics,she also participated in after-class activities like field trips, dance competitions, and singing challenges, among others.Age is not a problem when one is in search of education. Lakyntiew Syiemlieh is an examplefor everybody,and especially for those who give up studies midway.1. When did Lakyntiew probably drop out of school?A. In 2008.B. In 1998.C. In 1988.D. In 1968.2. Which of the following caused Lakyntiew to stop going to school?A. Her family was too poor to afford her education.B. She had too much difficulty in learning one subject.C. She was offered so good a job that she couldn't refuse.D. She had many children to raise and had no time to study.3. Which can best describe Lakyntiew's performance at school?A. Independent.B. Reasonable.C. Outstanding.D. Active.4. What can we learn from Lakyntiew's story?A. Live and learn.B. Hard work pays off.C. Many hands make light work.D. Education is the key to success.【答案】1. C 2. B 3. D 4. A【解析】【分析】这是一篇记叙文。

河南省周口中英文学校2020届高三上学期期中考试化学试题

绝密★启用前周口中英文学校2019-2020学年度上期高三期中考试化学试卷题号一二三四五六七总分得分注意事项：1．答题前填写好自己的姓名、班级、考号等信息2．请将答案正确填写在答题卡上第I卷（选择题）一、选择题（每小题3分，共54分）1.某反应物A浓度是1.0mol/L，2s后A的浓度变为0.8mol/L，在这2s内A的化学反应速率是（）A．0.1mol/（L•s） B．0.2mol/（L•s）C．0.3mol/（L•s） D．0.4mol/（L•s）2.下列化合物中，不能通过两种单质间直接化合制取的是( )A．FeCl3 B．CuCl2 C．HCl D．FeCl23.下列依据热化学方程式得出的结论正确的是A．甲烷的燃烧热是890kJ/mol，则甲烷燃烧的热化学方程式：CH4(g)＋2O2(g)＝CO2(g)＋2H2O(g) △H＝－890kJ/molB．已知C(石墨，s)=C(金刚石，s) ΔH>0，则金刚石比石墨稳定C．已知H＋(aq)＋OH－(aq)=H2O(l) ΔH＝－57.3 kJ·mol－1，则任何酸碱中和反应的热效应均为57.3 kJD．已知2C(s)＋2O2(g)=2CO2(g) ΔH1，2C(s)＋O2(g)=2CO(g) ΔH2，则ΔH1<ΔH24.下列措施不能．．加快化学反应速率的是（）A.升高温度B.降低温度C.提高反应物浓度D.使用合适的催化剂5.下列变化属于物理变化的是A. 煤的气化B. 煤的干馏C. 石油的分馏D. 乙烯聚合6.下列物质在常温下发生水解时，对应的水解方程式正确的是()A. Na 2CO3：CO32－＋H2O2OH－＋CO2↑B. NH 4NO3：NH4＋＋H2O NH3H2O＋H＋C. CuSO 4：Cu2＋＋2H2O Cu(OH)2↓＋2H＋D. KF：F－＋H2O===HF＋OH－7.下列热化学方程式中的反应热能表示标准燃烧热的是(a、b、c、d均大于0)：A. C6H12O6(s)＋6O2(g)===6CO2(g)＋6H2O(l) ΔH＝－a kJ·mol－1B. CH3CH2OH(l)＋O2(g)===CH3CHO(l)＋H2O(l) ΔH＝－b kJ·mol－1C. C(s)＋O2(g)===CO(g) ΔH＝－c kJ·mol－1D. NH3(g)＋O2(g)===NO(g)＋H2O(g) ΔH＝－d kJ·mol－18.最不适宜于制造炊事用具的金属是( )A. FeB. PbC. AlD. Cu9.下列关于酸碱盐的说法正确的是（）A. 化合物电离时，生成的阳离子有氢离子的是酸B. 化合物电离时，生成的阴离子有氢氧根的是碱C. 化合物电离时，只有生成金属阳离子与酸根离子的才是盐D. 盐酸、稀硫酸、浓硝酸都能导电，但它们既不是电解质也不是非电解质10.100 mL 3mol/L的NH4Cl溶液与50 mL2 mol/L的CaCl2溶液中氯离子的物质的量浓度之比为A. 3∶2B. 3∶1C. 3∶4D. 1∶111.化学与生产、生活密切相关，下列说法正确的是A. 丙烯和氯乙烯可以合成食品包装材料B. 蚕丝羊毛、棉花可用来制作纺织品，它们的成分都是蛋白质C. 用于文物年代鉴定的放射性14C和作为相对原子质量的12C,化学性质不同D. 将水库的钢闸门与电源负极相连或将锌块焊接于钢闸门上以防止钢闸门生锈12.常温时，体积均为50 mL物质的量浓度均为0.10 mol/L 的HX、HY、HZ 三种弱酸，分别用0.10 mol/L 的NaOH溶液滴定，滴定曲线如图所示。

河南省周口市中英文学校高三英语上学期期中试题新人教版

河南省周口市中英文学校2014届高三英语上学期期中试题新人教版第一部分英语知识运用第一节. 单项选择（共15小题；每小题1分，满分15分）21. ---Jenny, I think I’ll just have some coffee for a change．--- ____．The coffee I bought yesterday is in the cupboard．A．Change it, please B．Never mindC．With pleasure D．Help yourself22. --- Haven’t you heard the news?--- What news?--- Some of the workers are on ____ march while others are on ____ strike.A. /; theB. the; /C. /; /D. the; the23. --- ____busy schoolwork, the children also have to take arts, music andsports classes in their free time.--- I wonder what they will become.A. Rather thanB. Expect forC. Apart fromD. Owing to24. --- I’llcome to see your performance at 9:00 tomorrow evening.--- I’m sorry, but by then my p erformance ____ and I ____ reporters in the meeting room.A. will have ended; will be meetingB. will end; will meetC. will be ended; am going to meetD. is to end; will meet25. One of myclassmates accidentally ____ he had cheated in the last e xamination, or he wouldn’t have got so high a mark.A. pointed outB. let outC. took outD. tried out26. --- Whatabout the price of these washing machines?--- They are equal in price to, if not cheaper than, ____ at the other shops in the street.A. othersB. itC. thatD. the ones27. In thepast few years, My Heart Will Go On was a popular song amongyoung people, ____ were often heard singing it at parties．A. theyB. thatC. who D．which28. Behindthe coach ____ our team wearing blue suits.A. have B．walk C．is followed D．appears29. But when Igot ____ the town ought to have been, all I found was a gasstation.A. what B．which C．where D．that30. The hotelwas nice; the weather was warm; the beaches were beautiful.____ I’d say it was a great vacation.A. Completely B．Eventually C．Actually D．Altogether31．You fix my what? It was to get my brakes repaired ____ I brought my car in, not to get the engine replaced!A. so that B．when C．that D．because32. --- Wewant someone to design the new art museum for us.--- ____ the young fellow outside have a try?A. MayB. ShallC. WillD. Need33.How many of us ____ a meeting that has nothing to do with us is not important at all.A．attending B．to attendC．have attended D．attend34.Of the 9,500 drivers ____ since the beginning of the year, 23% were found ____ in road knowledge.A．tested; lacked B．testing; lackedC．tested; lacking D．to test; lacking35.The girl was drowned unfortunately. She ____, though, because there were so many people standing on the banks at that moment.A．should have saved B．could have been savedC．should be saved D．couldn’t have been saved第二节完形填空（共20小题；每小题1.5分，满分30分）阅读下面短文，掌握其大意，然后从36 ~ 55各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。

河南省周口中英文学校高三英语上学期期中试题(含解析)

学年上期高三期中考试英语试题第二局部阅读理解〔本大题共两节，每题2分,共40分〕第一节〔共15小题，每题2分，总分值30分〕阅读以下短文，从每题所给的〔A,B,C和D)中，选出最正确选项。

ASports can help us a lot. Taking exercises can make us strong. In collective 〔集体的〕sports like basketball, volleyball or football, we will learn the importance of cooperation(合作). And sports can also help us relax after work or study.However, as the saying goes, “there are two sides of everything.〞 Sometimes we may hurt other players or ourselves if we are not careful enough when participating(参加) in sports activities. What’s more, too much or hard practice can be bad for our health.Sports can make us healthy both physically and psychologically(心理地). It is also a good way for people to know each other and can improve friendship between people. So long as we are careful enough, sports can do us nothing but good.1. can make us strong.A. SleepingB. SingingC. Making friendsD. Taking exercise2. Too much exercise can be for us.A. goodB. enoughC. badD. helpful3. Sports can .A. help people to know each otherB. improve friendship between peopleC. do us nothing but good if we are carefulD. All of the above4. Which of the following is NOT true?A. Sports can help us relax after work or study.B. Sports can only make us healthy physically.C. Sometimes we may hurt other players or ourselves when participating in sportsactivities.D. Basketball and volleyball are both collective sports.【答案】1. D 2. C 3. D 4. B【解析】这是一篇说明文。

河南省周口市中英文学校高三上学期期中考试数学试题.pdf

一、选择题（本大题共1小题，每小题分，共分，在每小题给出的四个选项中，只有一项是符合题目要求的） 2．函数的定义域为A． B． C． D．．已知A＝{0,1}，B＝{－1,0,1}，f是从A到B的映射，则满足f(0)>f(1)的映射有( ) A．3个 B．4个C．5个D．2个．在上为减函数，则的取值范围是（） A. B. C. D. 5、已知函数在上单调递减，则不等式的解集是( )（A）（B）C）（D） 9.若函数，若,则实数的取值范围是　（） A. B. C. D. 10、若的二次方程的一个根大于零，另一个根小于零，则是的（） A．充分不必要条件 B．必要不充分条件 C．充要条件 D．既不充分也不必要条件 11、已知是的一个零点，，则　（　） A. B. C. D. 12．已知函数是定义在实数集R上的奇函数，且当时成立（其中的导函数），若，，则的大小关系是 ( ) A．B．C．D．二、填空题（本大题共4小题，每题分，共分，把答案填在题中横线上）的定义域是R, 则的取值范围是 14、若函数f(x)=(3－a)xg(x)=logax的增减性相同，则实数a的取值范围是_________． 15、已知函数有三个不同的零点，则实数的取值范围是 . 16、下列叙述正确的有 ①集合，,则 ②若函数的定义域为，则实数 ③函数是奇函数 ④函数在区间上是减函数三、解答题（本大题共小题，共分，解答应写出文字说明，证明过程或演算步骤．(本小题满分1分)：实数满足，其中；命题：实数满足且的必要不充分条件，求实数的取值范围. 18．(本题满分1分)设函数f(x)＝ax3＋bx＋c(a≠0)为奇函数，其图像在点 (1，f(1))处的切线与直线x－6y－7＝0垂直，导函数f′(x)的最小值为－12. (1)求a，b，c的值； (2)求函数f (x)的单调递增区间，并求函数f(x)在[－1,3]上的最大值和最小值．记函数的定义域为集合，函数为增函数时的集合为函数的域为集合. (1) 求集合； (2) 求集合∩(B∪C) 20、（本小题满分12分）已知奇函数，（1）求实数a的值（2）判断在上的单调性并进行证明；（3）若函数满足，求实数的取值范围； 21.（本题满分12分）已知函数. （）若函数在处取得极值，且函数只有一个零点，求的取值范围. （）若函数在区间上不是单调函数，求的取值范围周口中英文学校2013—2014学年高三期中考试数学试题答案三、解答题（本大题共小题，共分，解答应写出文字说明，证明过程或演算步骤17.（本小题1分）解　(1)f(x)为奇函数， f(－x)＝－f(x)，即－ax3－bx＋c＝－ax3－bx－c. c＝0，f′(x)＝3ax2＋b的最小值为－12，b＝－12. 又直线x－6y－7＝0的斜率为，因此，f′(1)＝3a＋b＝－6. a＝2，b＝－12，c＝0.(2)单调递增区间是(－∞，－)和(，＋∞)．f(x)在[－1,3]上的最大值是18，最小值是－8.20. （本小题12分） (3) 因为为奇函数，由（1）知在上单调递增可化为又由（1）知在上单调递增 ………12分 21. （本小题12分）解，由，所以，可知：当时，，单增；当时，，单减；当时，，单增；而. 所以函数只有一个零点或，解得的取值范围是. .由条件知方程在上有两个不等的实根，且在至少有一个根.所以；由使得：. 综上可知：的取值范围是.? m>－. 又m<0，∴－<m<0. ∴m的取值范围是. 第1题。

2021届河南省周口市中英文学校高三上学期英语期中考试试题答案

2021届河南省周口市中英文学校高三上学期英语期中考试试题答案一、阅读理解CBDA ABCD CBDD BAD EFGCA二、完型填空DACBB CDDAC BCABD ABACD三、语法填空61．Developing 62．European 63．Which 64．Countries 65．is seen66．a 67．rapidly 68．to be 69．to 70．will/can learn第四部分：写作（共两节，满分35分）第一节：短文改错（共10小题；每小题1分，满分10分）【小题1】here→there【小题2】us→our【小题3】flower→flowers【小题4】cleaning→clean【小题5】hardly→hard【小题6】chat→chatting【小题7】told后去掉to【小题8】share→shared【小题9】since→before【小题10】end前加the五：书面表达：One possible version：Dear Andy,Glad to hear that you’re collected large sums of money for our city. I’m writing to extend our sincere gratitude for your genuine act of kindness. It is what many people like you have done that lets us feel we’re not alone. We can’t thank you too much!Currently, everything is improving. China has taken a series of powerful measures to contain the spread of COVID-19 since its outbreak. The lockdown of our city is a most effective way and our citizens are going all out to do our parts. Touchingly, more and more volunteers are flooding in from across China to help us out.Honestly, I'm praying that the epidemic will disappear soon and everything will return to normal. I believe so!Best wishes to you!Yours,Li Hua。

河南省周口中英文学校2020┄2021届高三上学期期中考试英语试题

I第一部分：阅读理解（共两节，满分40分）第一节（共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的四个选项（A、B、C和D中，选出最佳选项。

AIt is natural that young people are often uncomfortable when they are with their parents. They say that their parents don’t understand them. They often think that their paren ts are out of touch with modern ways, that they are too serious and too strict with their children, and they seldom give their children a free hand.It is true that parents often find it difficult to win their children’s trust and they tend to forget how they themselves felt when young. For example, young people like to act on the spot without much thinking. It is one of their ways to show that they have grown up and they can face any difficult situation. Older people worry more easily. Most of them plan things ahead, at least in the back of their minds, and do not like their plans to be upset by something unexpected. When you want your parents to let you do something, you will have better success if you ask before you really start doing it.Young people often make their parents angry with their choice in clothes, in entertainment and in music. But they do not mean to cause any trouble：it is just that they feel cut off from the older people’s world, into which they have not yet been accepted. That’s why young people want to make a new culture of their own, and if their parents do not like their music or entertainment or clothes or their way of speech, this will make the young people extremely happy.Sometimes you are so proud of yourself that you do not want y our parents to say, “ Yes” to what you do. All you want is to be felt alone and do what you like. It is natural enough, after being a child for so many years, when you were completely under your parents’ control. If you plan to control your life, you’d bet ter win your parents over and try to get them to understand you. If your parents see that you have a high sense of responsibility, they will certainly give you the right to do what you want to do.1. ___ are to blame for the quarrels between parents and their children according to this passage.A. ParentsB. Young peopleC. Neither parents nor their childrenD. Both parents and their children2. According to the passage, young people prefer to ___.A. ask for advice before they really start to do anything.B. do things without thinking carefully ahead.C. think in the same way as their parents do.D. be very strict with themselves3. Young people like to have clothes, entertainment and music in their way, because ____.A. they want to make their parents happy.B. they try to get their parents to believe them.C. they want to try on something new and look different from the older.D. they want to test whether they are cleverer than old people.4. According to the passage, young people want to make a new culture of their own, because ___.A. they don’t feel they belong to the world of the older people.B. they do not want to get into trouble.C. they feel they are as clever as old people.D. they want to show they have grown up.BWe don't know how different our future will be in the future. We can only try to imagine it.At first we think about human relationship．In the year 2050, we will use computers almost every day we will be making new friends through the Internet-even our husbands or wives wil l be met in this way．It will be much faster and easier for us. On the other hand, our relationships with people won't be as important as they are today-we will feel a little lonely. Computers will also help us in many other activities in 2050．For example, they will be used by the children at school to make their learning easier. In addition，there will be much more other machines which will play a similar role as computers, like robots which will do the homework for us.Spending holidays will also be completely different．Traveling to other planets or to the moon will he available for everyone．Means of transport will，of course，change，too．We will be using solar-powered ears，which will be much cleaner．We could expect that the faster technological progress would lead to a more polluted environment．But it isn't true．We will pay more attention to protecting the environment. And, Scientists will probably find cures for many dangerous diseases，like cancer or AIDS. Therefore，our surroundings as well as health will be in better condition．Although we can't predict the exact changes which will be made in the world，we oftenthink about them. We worry about our and our children's future；we have expectations, hopes as well as fears. But I think we should be rather sanguine about our future．We should be happy and believe good things will happen．5．Why will people probably feel a little lonely in 2050？A．Because the number of people will become much smaller．B．Because there will be less face-to-face communicationC．Because people won't like making friends with each otherD．Because people won't communicate with each other much often．6．The third paragraph mainly tells is_______A．that computers will do all the things for human beingsB．how people will use computers to communicate with each otherC．that machines like computers and robots will help people a lotD．how people will use robots to do the housework7．According to the passage，which of the following will happen in 2050？A．The relationship between people will be more important than today．B．The way of spending holidays will be the same as that of today．C．It won't be difficult for people to travel to other planetsD．Our environment will be much more polluted with a growing number of cars8．What does the passage mainly talk about？A．How people will communicate in the year 2050．B．What our life will be like in the year2050．C．How people will travel and spend their holidays in the year 2050．D．What high technology will appear in the year2050．CI was never very neat, while my roommate Kate was extremely organized. Each of her objects had its place, but mine always hid somewhere. She even labeled （贴标签） everything. I always looked for everything. Over time, Kate got neater and I got messier. She would push my dirty clothing over, and I would lay my books on her tidy desk. We both got tired of each other. War broke out one evening. Kate came into the room. Soon, I heard her screaming, “ Take your shoes away! Why under my bed!” Deafened, I saw my shoes flying at me. I jumped to my feet and started yelling. She yelled back louder.The room was filled with anger. We could not have stayed together for a single minute but for a phone call. Kate answered it. From her end of the conversation, I could tell right away her grandma was seriously ill. When she hung up, she quickly crawled （爬） under her covers, sobbing. Obviously, that was something she should not go through alone. All of a sudden, a warm feeling of sympathy rose up in my heart.Slowly, I collected the pencils, took back the books, made my bed, cleaned the socks and swept the floor, even on her side. I got so into my work that I even didn’t notice Kate had sat up. She was watching, her tears dried and her expression one of disbelief. Then, she reached out her hands to grasp mine. I looked up into her eyes. She smiled at me, “Thanks.”Kate and I stayed roommates for rest of the year. We didn’t always agree, but we learned the key to living together：giving in, cleaning up and holding on.9. What made Kate so angry one evening？A. She couldn’t find her books.B. She heard the author shouting loud.C. She got the news that her grandma was ill.D. She saw the author’s shoes beneath her bed.10. The author tidied up the room most probably because _________.A. She was scared by Kate’s anger.B. She hated herself for being so messy.C. She wanted to show her care.D. She was asked by Kate to do so.11. What might be the best title for the story？A. My Friend KateB. Hard Work Pays OffC. How To Be OrganizedD. Learning To Be RoommatesD“Just ate chicken feet for lunch. ” These were the words I wrote on my blog yesterday. By the next day there were hundreds of comments from my friends. They ranged from “OH MY GOD! That is so disgusting! ” to “What were they like？” to “Why can’t you eat sandwiches like everyone else？”To Chinese people, chicken feet are a normal snack. To my friends in Britain, the thought of eating a chicken’s foot is——well, weird （古怪的）. As weird, in fact, as eating a bullfrog, scorpion（蝎子）, snake, or turtle.But if there are two things I love more than anything else in life, they are ：trying new things and foodI arrived in Beijing five months ago. Since then, I’ve searched for the “weirdest” foods so I can try them, then treat my friends to some “virtual（虚拟的）eating” on my blog.One weekend, I went to Wangfujing, Beijing’s “snack street”. The trip gave me tons of blog material.“I chose a stick with three live, wriggling（扭动的） scorpions on it,” I wrote. “ And it was pretty good. The scorpion was warm and crispy. The legs did have a tendency to get stuck between on e’s teeth, however. What’s more, I am sure scorpion number two stung me with its tail in revenge（报复）.”Next came snake：“ A bit like a cross between fish and chicken, with a slightly rubbery texture and meaty taste.”Some people were actually angry when I ate turtle soup——especially when I posted pictures showing the poor little guy’s head staring sadly up at us from the bowl. “ I am never speaking to you again,” wrote one （former） friend.Still, I will continue my culinary quest.Next on my list is starfish, though I feel I should have some vegetables too——algae, maybe. So what am I eating, tonight, you may ask. Pizza. Well, a girl’s gotta have a break sometimes.12. What does the writer like most in life？A. Trying new things and food.B. Traveling.C. Walking.D. Shopping.13. Where did the writer get her blog material？A. From his friends.B. From Wangfujing, Beijing’s “snack street”.C. From Shopping.D. From the Internet.14. What is the writer’s friends’ attitude toward her trying “weird” foods？A. They are satisfied.B. They are happy.C. They are surprised and even angry.D. They are sorry.15. Which of the following “weirdest” foods is the one writer hasn’t tried？A. Chicken’s feet.B. Bullfrog.C. Scorpion.D. Chicken’s head.笫二节（共5小题；每小题2分，满分10分）根据短文内容，从短文后的选项中选出能填人空白处的最佳选项。

河南省周口中英文学校高三数学上学期期中试题文

周口中英文学校高中部2019-2019学年度上学期期中考试高三文科数学试卷时间120分钟满分150分一、选择题：本大题共12小题，每小题5分，共60分．在每小题给出的四个选项中，只有一个是符合题目要求的．1．已知集合{|||2,}A y y x x R ==-∈，{|1}B x x =≥，则下列结论正确的是（）A. 3A -∈B.3B ∉C.D.A B B =U 2．下列命题正确的是（）A. 2000,230x R x x ∃∈++=B. 32,x N x x ∀∈>C. 1x >是21x >的充分不必要条件D. 若a b >，则22a b > 3、若点(9,)a 在函数3log y x =的图象上，则tan 6a π的值（） A ．0 B ．33C ．1D ．34、下列函数中，图像的一部分如右图所示的是（） A ．sin()6y x π=+ B.cos(2)6y x π=-C.cos(4)3y x π=-D.sin(2)6y x π=-5、已知命题p ：函数y ＝e |x －1|的图象关于直线x ＝1对称，q ：函数y ＝cos ⎝⎛⎭⎪⎫2x ＋π6的图象关于点⎝ ⎛⎭⎪⎫π6，0对称，则下列命题中的真命题为( ) A ．p ∧q B ．p ∧(非q ) C ．(非p )∧q D ．(非p )∨(非q )6、函数()2ln f x x x =的图象大致为（）A. B. C.D.7、已知a 为函数f (x )=x 3–12x 的极小值点，则a =（）A2 B ．–2 C ．4D –48. 用二分法求方程ln(2x+6)+2=3x 的根的近似值时,令f (x )=ln(2x+6)+2-3x ,并用计算器得到下表:x1.001.251.375 1.50 f (x ) 1.0794 0.1918−0.3604−0.9989则由表中的数据,可得方程ln(2x+6)+2=3x 的一个近似解(精确度为0.1)为A ．1.125B ．1.3125C ．1.4375D ．1.468759、若偶函数()f x 在(],0-∞上单调递减, ()()3224log 3,log 5,2a f b f c f ⎛⎫=== ⎪⎝⎭,则满足A . a b c <<B . b a c <<C . c a b <<D . c b a << 10、△ABC 中，AB ＝2，AC ＝3，B ＝60°，则cos C ＝( )A ．33B ．±63C ．－63D ．6311、已知定义域为(0,)+∞的函数()f x 的图象经过点(2,4)，且对任意的(0,)x ∈+∞，都有()10'x f ->，则不等式22()2x x f -<的解集为A ．(1,)+∞B ．(0,2)C ．(1,2)D ．(0,1)12、已知函数为增函数，则的取值范围是（）A. B.B.D.二、填空题：(本大题共4小题，每小题5分，共20分)13．已知△ABC 中，内角A ，B ，C 的对边分别为ɑ，b ，c ，若ɑ2＝b 2＋c 2－bc ，bc ＝4，则△ABC 的面积为 14．曲线y ＝x e x ＋2x －1在点(0，－1)处的切线方程为 15．如图所示，为测量山高MN ，选择A 和另一座山的山顶C 为测量观测点．从A 点测得M 点的仰角∠MAN ＝60°，C 点的仰角∠CAB ＝45°以及∠MAC ＝75°.从C 点测得∠MCA ＝60°，已知山高BC ＝100 m ，则山高MN ＝______米16.设()f x 是定义在R 上且周期为2的函数，在区间[1,1)-上，,10,()2,01,5x a x f x x x +-≤<⎧⎪=⎨-≤<⎪⎩其中.a ∈R 若59()()22f f -= ，则(5)f a 的值是 .三、解答题：本大题共6小题，共70分．解答时应写出必要的文字说明、证明过程或演算步骤．17. (本小题满分10分) 设命题p ：函数()()2lg 21f x ax x =-+的定义域为R ；命题q ：当122x ⎡⎤∈⎢⎥⎣⎦，时，1x a x +>恒成立，如果命题“p ∧q ”为真命题，求实数a 的取值范围．18. (本小题满分12分) 已知x x g kx x x f 4)(,5)(2=++=，设当1≤x 时，函数2241+-=+x x y 的值域为D ，且当D x ∈时，恒有)()(x g x f ≤，求实数k 的取值范围.19、（本小题满分12分）已知函数f (x )＝cos 4x －2sin x cos x －sin 4x . (1)求f (x )的最小正周期； (2)求f (x )的单调区间；(3)若x ∈⎣⎢⎡⎦⎥⎤0，π2，求f (x )的最大值及最小值． 20．（本小题满分12分）△ABC 的内角A ，B ，C 的对边分别为a ，b ，c ，已知2cos C (a cos B ＋b cos A )＝c . (1)求C ；(2)若c ＝7，△ABC 的面积为332，求△ABC 的周长． 21．（本小题满分12分）已知函数R x a x e x f x ∈+-=,)(2的图像在点0=x 处的切线为bx y =．（1）求函数)(x f 的解析式；（2）当R x ∈时，求证：x x x f +-≥2)(；（3）若kx x f >)(对任意的),0(+∞∈x 恒成立，求实数k 的取值范围；22、（本小题满分12分）已知函数f (x )＝ln x －ax ＋1－ax －1(a ∈R )： (1)当a ≤12时，讨论f (x )的单调性；(2)设g (x )＝x 2－2bx ＋4，当a ＝14时，若对∀x 1∈(0,2)，∃x 2∈[1,2]，使f (x 1)≥g (x 2)，求实数b 的取值范围．周口中英文学校2019―2019学年上期期中考试高三文科数学试题答案一、选择题：（每小题5分，共60分）题号 1 2 3 4 5 6 7 8 9 10 11 12 答案 CCDBAAA课本、报刊杂志中的成语、BDCA二、填空：13、 3 14、y ＝3x －1 15、150_ 16、52- 三、解答题17（满分10分）由题意可知，命题,p q 均为真命题， p 为真命题时：()2{240a a >∆=--< ，解得： 1a > ， q 为真命题时：()1f x x x =+ 在区间1,12⎡⎤⎢⎥⎣⎦上单调递减，在区间[]1,2 上单调递增， min11121x x ⎛⎫+=+= ⎪⎝⎭ ，故：2a <，综上可得，实数a 的取值范围是()1,2 . 18、（满分12分）【解答】解：令x t 2=，由于1≤x ，则]2,0(∈t 则原函数]2,1[],2,1[1)1(2222=∈+-=+-=D t t t y 即由题意：,45)(2x kx x x f ≤++=法1：则D x x k x ∈≤+-+ 05)4(2时恒成立法二：则D x xx k ∈++-≤在4)5(时恒成立，故24)5(min-=⎥⎦⎤⎢⎣⎡++-≤xx k19（满分12分）：解 (1)f (x )＝(cos 2x －sin 2x )(cos 2x ＋sin 2x )－sin2x ＝cos2x －sin2x ＝2cos ⎝⎛⎭⎪⎫2x ＋π4，所以最小正周期T ＝2π2＝π.(2)由2k π－π≤2x ＋π4≤2k π，k ∈Z ，得k π－58π≤x ≤k π－π8，k ∈Z ，所以函数f (x )的单调增区间为⎣⎢⎡⎦⎥⎤k π－58π，k π－18π(k ∈Z )．要练说，得练看。

河南省周口市中英文学校2021届上学期高三年级期中考试化学试卷

河南省周口市中英文学校2021届上学期高三年级期中考试化学试卷第Ⅰ卷可能用到的相对原子质量：H 1 C 12 N 14 O 16 Na 23 Mg 24 Al 27 Fe 56 Cu 64一、选择题（本题共 16小题，每个小题只有一个选项符合题意，选对得3 分，共 4 8 分）1 我国清代《本草纲目拾遗》中叙述了“铁线粉”：“粤中洋行有舶上铁丝，……日久起销，用刀刮其销，……，所刮下之销末，名铁线粉”。

这里的“铁线粉”是指A．Fe B．FeCl3 C．FeO D．Fe2O32 下列关于铝及其化合物的说法不正确的是A．Al既可用于食品包装，也可用作建筑材料B．Al2O3既可用来冶炼金属Al，也可用作耐火材料C．明矾既可用作净水剂，也可用作消毒剂D．AlOH3既可用作治疗胃酸过多的药物，也可用来制备一些铝盐3 既能跟稀盐酸反应，又能跟氢氧化钠溶液反应的化合物是①NaHCO3②Al2O3③AlOH3④AlA．①②③B．①④ C．②③④ D．①②③4下列反应中，Na2O2只表现强氧化性的是A．2Na2O2＋2CO2===2Na2CO3＋O2B．Na2O2＋MnO2===Na2MnO4C．5Na2O2＋2MnO错误!＋16H＋===10Na＋＋2Mn2＋＋5O2↑＋8H2OD．2Na2O2＋2H2SO4===2Na2SO4＋2H2O＋O2↑5 NaClO2可用作造纸的漂白剂，它由H2O2＋2ClO2＋2NaOH===2NaClO2＋2H2O＋O2制得，下列说法正确的是A．H2O2是氧化剂，H2O2中的氧元素被还原B．每生成1 mol O2转移的电子的物质的量为4 molC．ClO2中的氯元素被氧化D．ClO2是氧化剂，H2O2是还原剂6 下列反应的离子方程式书写正确的是A．CO2通入NaAlO2溶液中：AlO错误!＋CO2＋H2O===AlOH3↓＋CO错误!B．Al2O3与过量氨水：Al2O3＋6NH3·H2O===2Al3＋＋6NH错误!C．向AlCl3溶液中加入过量NaOH溶液：Al3＋＋3OH－===AlOH3↓D．向AlCl3溶液中滴入过量的氨水：Al3＋＋3NH3·H2O===AlOH3↓＋3NH错误!、Mg、Al分别与100 mL 2 mol·L－1的盐酸反应，实验测得生成气体的体积V已折合为标准状况与时间t的关系如图所示，则下列说法错误的是A．＝ B．钠的物质的量为 molC．反应时，Na、Mg、Al均过量 D．曲线b为Mg与盐酸反应的图像8 下表中，对陈述Ⅰ、Ⅱ的正确性及两者间是否具有因果关系的判断都正确的是2CO2的体积与所加盐酸体积之间关系如图所示。

河南省周口中英文学校2022届高三化学上学期期中试题202222240292

河南省周口中英文学校2022届高三化学上学期期中试题题号一二三四五六七总分得分考前须知：1．答题前填写好自己的姓名、班级、考号等信息2．请将答案正确填写在答题卡上第I卷〔选择题〕一、选择题〔每题3分，共54分〕1.某反响物A浓度是1.0mol/L，2s后A的浓度变为0.8mol/L，在这2s内A的化学反响速率是〔〕A．0.1mol/〔L•s〕 B．0.2mol/〔L•s〕C．0.3mol/〔L•s〕 D．0.4mol/〔L•s〕2.以下化合物中，不能通过两种单质间直接化合制取的是( )A．FeCl3 B．CuCl2 C．HCl D．FeCl23.以下依据热化学方程式得出的结论正确的选项是A．甲烷的燃烧热是890kJ/mol，那么甲烷燃烧的热化学方程式：CH4(g)＋2O2(g)＝CO2(g)＋2H2O(g) △H＝－890kJ/molB．C(石墨，s)=C(金刚石，s) ΔH>0，那么金刚石比石墨稳定C．H＋(aq)＋OH－(aq)=H2O(l) ΔH＝－57.3 kJ·mol－1，那么任何酸碱中和反响的热效应均为57.3 kJD．2C(s)＋2O2(g)=2CO2(g) ΔH1，2C(s)＋O2(g)=2CO(g) ΔH2，那么ΔH1<ΔH24.以下措施不能．．加快化学反响速率的是〔〕A.升高温度B.降低温度C.提高反响物浓度D.使用适宜的催化剂5.以下变化属于物理变化的是A. 煤的气化B. 煤的干馏C. 石油的分馏D. 乙烯聚合6.以下物质在常温下发生水解时，对应的水解方程式正确的选项是()A. Na2CO3：CO32－＋H2O2OH－＋CO2↑B. NH4NO3：NH4＋＋H2O NH3H2O＋H＋C. CuSO4：Cu2＋＋2H2O Cu(OH)2↓＋2H＋D. KF：F－＋H2O===HF＋OH－7.以下热化学方程式中的反响热能表示标准燃烧热的是(a、b、c、d均大于0)：A. C6H12O6(s)＋6O2(g)===6CO2(g)＋6H2O(l) ΔH＝－a kJ·mol－1B. CH3CH2OH(l)＋O2(g)===CH3CHO(l)＋H2O(l) ΔH＝－b kJ·mol－1C. C(s)＋O2(g)===CO(g) ΔH＝－c kJ·mol－1D. NH3(g)＋O2(g)===NO(g)＋H2O(g) ΔH＝－d kJ·mol－18.最不适宜于制造炊事用具的金属是( )A. FeB. PbC. AlD. Cu9.以下关于酸碱盐的说法正确的选项是〔〕A. 化合物电离时，生成的阳离子有氢离子的是酸B. 化合物电离时，生成的阴离子有氢氧根的是碱C. 化合物电离时，只有生成金属阳离子与酸根离子的才是盐D. 盐酸、稀硫酸、浓硝酸都能导电，但它们既不是电解质也不是非电解质10.100 mL 3mol/L的NH4Cl溶液与50 mL2 mol/L的CaCl2溶液中氯离子的物质的量浓度之比为A. 3∶2B. 3∶1C. 3∶4D. 1∶111.化学与生产、生活密切相关，以下说法正确的选项是A. 丙烯和氯乙烯可以合成食品包装材料B. 蚕丝羊毛、棉花可用来制作纺织品，它们的成分都是蛋白质C. 用于文物年代鉴定的放射性14C和作为相对原子质量的12C,化学性质不同D. 将水库的钢闸门与电源负极相连或将锌块焊接于钢闸门上以防止钢闸门生锈12.常温时，体积均为50 mL物质的量浓度均为0.10 mol/L 的HX、HY、HZ 三种弱酸，分别用0.10 mol/L 的NaOH溶液滴定，滴定曲线如下图。