山东省济南市2021届高三上学期期中考试英语试题(含答案解析)
山东省威海市文登区2021届(新高考)高三上学期11月期中考试英语试题(含答案)
绝密★启用前高三英语注意事项:1. 答卷前,考生务必将自己的姓名、考生号等填写在答题卡和试卷指定位置上。
2. 回答选择题时,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑。
如需改动,用橡皮擦干净后,再选涂其他答案标号。
回答非选择题时,将答案写在答题卡上。
写在本试卷上无效。
3. 考试结束后,将本试卷和答题卡一并交回。
第一部分听力(共两节,满分30分)做题时,先将答案标在试卷上。
录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。
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,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. What does the woman want to do first?A. Go up one floor.B. Go to the bus stop.C. Go to the boy’s classroom.2. What does the woman think of the medicine?A. It doesn’t work.B. It makes her tired.C. It makes her have no appetite.3. How many cookies did John eat?A. Three.B. Four.C. Seven.4. Where are the speakers?A. On the plane.B. At a conference room.C. On the train.5. Who might the man be?A. A librarian.B. A student.C. A novelist.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。
山东省2021届高三上学期期中英语试卷汇编:七选五专题
七选五专题山东省泰安市2021届高三上学期期中考试英语试题第二节(共5小题,每小题2.5分,满分12・5分)阅读下而短文,从短文后的选项中选出可以填入空白处的最佳选项。
选项中有两项为多余选项。
Will Traditional TV Ever Be Replaced by Streaming?For a long time, people had to listen to the radio to get news, drama, and music at home. This all changed with the development of the television in the early 20th century. 36 Since then, British TV viewers have enjoyed the launch of commercial TV, the addition of Channel 4, and then Channel 5, and finally the birth of paid services through satellite and cable.A Slow DeclineWhile the uptake of TV ownership exploded, the decline of television's dominance has been slow and has been going on for the past decade. 37 Streaming services have given us access to more content than was ever possible, including back catalogues of classic shows and blockbuster movies.Changing Viewing HabitsIn the UK, adults are spending more time watching content on YouTube and streaming services than ever before. In 2018, these figures were 30 minutes and 26 minutes per day respectively. 38Still the King39 For example, in 2018 UK adults continued to watch BBC One for an average of 41 minutes per day, more than any streaming service.Average viewing time for all traditional TV channels continues to decline though, despite much larger quantities of original content being produced by these organisations. 40 While the traditional TV networks have seen a decline, the television set itself doesn't look like it's going anywhere any time soon.A. This has been the trend for the last couple of decades.B. The original content has included massively popular shows.C. Suddenly, we were able to see what was going on, not just listen along.D. The traditional TV channels are taking away audiences from streaming services.E. Most major TV channels have their own catch up streaming service.Fe While demand for streaming services is up, TV continues to be the most watched overall. G. Today, we have the power to watch whatever, whenever, wherever we want.第二节(共5小题;每小题2.5分,满分12.5分)36—40 CGAFB山东省潍坊市2021届高三上学期期中考试英语试题第二节(共5小题;每小题2. 5分,满分12. 5分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。
2021届山东省临沂一中高三上学期11月期中模拟考试英语试卷及答案
2021届山东省临沂一中高三上学期11月期中模拟考试英语试卷★祝考试顺利★(含答案)本试题卷共10页,分第I卷和第II卷两部分。
全卷满分150分。
考试用时120分钟。
第一部分:听力(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秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
例:How much is the shirt?A. £19.15.B. £9.15.C. £9.18.答案是B。
1. What does the woman want the man to do?A. Have some milk.B. Go shopping.C. Take out the garbage.2. What will the man do tonight?A. Go bowling.B. Visit the woman.C. Prepare for an exam.3. What will the man most probably do?A. Pay for the tickets.B. Go to the ticket office.C. Ask the woman for a discount.4. Where does the conversation take place?A. At home.B. At the doctor's.C. At the man's office.5. What are the speakers mainly talking about?A. A mail.B. A course.C. A language.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。
山东省2021届高三上学期期中英语试卷汇编:读后续写专题
读后续写专题山东省泰安市2021届高三上学期期中考试英语试题第二节(满分25分)阅读下面材料,根据其内容和所给段落开头语续写两段,使之构成一篇完整的短文。
续写的词数应为150左右。
In the beautiful city of San Francisco, it was spring. The flowers were blooming, the sun was shining, and the birds were singing their beautiful song. In a nearby basketball stadium.there was a basketball championship going on. Jesse like his elder brother Timmy was one of the best in the competition; he scored most of his team's points, but his team did not like that. Jesse never passed the ball. His coach always told him that it was a team game and not a one- man show.“Jesse, pass the ball more," insisted Coach Tyler.“Coach, I am good; I can win this whole tournament by myself if I want to,“ responded Jesse.“Jesse, you need to learn to respect the game!” sai d Coach Tyler."I don't need to respect anything;' said Jesse.“Okay then, and I don't need you in my team, Jesse. Get out of here!' said Coach Tyler.“Fine!” replied Jesse angrily.At school Jesse's friends Zack, Christopher, and Aaron were trying to calm down Jesse, who was still angry about what happened the previous day. Jesse was usually good in school, but after he was kicked out of the team, his attitude changed. He started doing poorly; he got in trouble and failed classes. Jesse tried to join other basketball teams, but he could not because their list was filled or he was too young or too old. Finally, Jesse was recommended a team by Zack.Five months later…Jesse started passing the ball more, and lie still averaged 26.4 points per game. Jesse enjoyed how he played, but he did not like that he was coining off the bench (替补). Jesse proved that he was a star on the court, but still the coach said that lie was better corning off the bench. "Coach, I think I have showed that I can start next game,” said Jesse calmly. "No, Jesse, you are not good enough,“ responded the coach. "But…"said Jesse before the coach interrupted him. "No, Jesse!” Jesse started getting mad. "Coach, you need to start me. I’m the best in this team ," said Jesse arrogantly, "Jesse, how about you just leave?” shouted the coach.注意:1.续写词数应为150左右;2.请按如下格式在答题卡的相应位置作答。
专题09(书面表达全国通用) 解析版 2022届高三英语百所名校好题分类快递(12月)
Thank you!
浙江省杭州学军中学2021-2022学年高三上学期期中考试英语试题
The Students’ Union
A safety lecture will be held in the school hall at 3:30 this Friday afternoon and it will last two hours. Everyone is welcome to attend the lecture.
If you are interested in the lecture, please enter the school hall ahead of time and keep quiet during the lecture.
书信体书面表达
黑龙江省牡丹江市2022届高三上学期11月联考英语试卷
“双减”,即有效减轻学生过重作业负担和校外培训负担。自从国家出台相关文件后,引来了各方的关注和讨论,也使一些学生和家长无所适从。假设你是李华,一名即将毕业的高三学生,请你根据下面提示,就实施“双减”政策后学生如何规划自己的学习和课余生活,给你的同学们写一封建议信。
Inspired by their hard work and courageous deeds, I found the answer that I have long been looking for—serving as a doctor to do my share for my country. To make it a reality, I will spare no efforts to equip myself with all the necessary knowledge and skills so that I can achieve my dream in the end.
山东省济南市中职学校2021届春考班高三第一次联考英语试题 PDF版含答案
济南市中职学校2021届春考班第一次联考英语试题本试题分卷一(选择题)和卷二(非选择题)两部分,满分80分,考试时间60分钟。
考生请在答题卡上答题,考试结束后,请将本试卷和答题卡一并收回。
卷一(选择题 50分)一、英语知识运用(本题共30个小题,每小题1 分,共30分。
在每小题列出的四个选项中,只有一项符合题目要求,请将符合题目要求的选项字母代号选出,并填涂在答题卡上)1、The English teacher gave students some on how to learn English well.A. messagesB. informationsC. suggestionsD. advices2、 will take part in the party tomorrow.A. You, he and IB.I, he and youC. He, you and ID.I, you and he3、--Honey, it’ s too hot. Please keep the door .--OK.A. openedB. openC. openingD.to open4、This room is that one.A.as two times large asB. two times as large asC.as large as two timesD.as large two times as5、It’s necessary for us to learn how to work in groups, sometimes it’s more important than grades.A. soB. veryC. tooD. even6、To the supermarket, we should take bus NO.6 here and at the next stop.A. get to get offB. get to get toC. get off get toD. get off get off7、Look! The dress is so beautiful, but the price is .A. too highB. too expensiveC. so highlyD. more expensive 8、 of the land in the country covered with trees and grass.A. Two thirds areB. Two thirds isC. Second thirds isD. Second three are9、--Hello, Mike. ?--Pretty good. Everything goes well.A. How do you doB. How is it goingC. What’s wrongD. What are you doing10、 book on the shelf is useful one.A. The theB. The anC. The aD. An an11、Tina as well as her friends going to camping tomorrow.A. areB. willC. will beD. is12、--You haven’t heard of the news, have you?-- Tell me quickly.A. Yes, I haveB. Yes, I doC. No, I haven’tD. No, I don’t13、--Must I finish my homework tonight?--No, you , you do it tomorrow.A. needn’t mayB. mustn’t canC. can’t canD. needn’t can’t14、Rose will get good grades if she hard enough.A. studysB. studyC. will studyD. studies15、It was too noisy. The leader had to raise his voice to make himself .A. hearB. to hearC. heardD. hearing16、Do you know the boy__ is sitting next to Peter?Yes. He is Peter's friend. They are celebrating his __ birthday.A.who; ninthB. who; ninethC. /; ninthD. which; nineth17、It was him I told the news the day before yesterday.A. whomB. whichC. whoseD. what第 1 页共 6 页18、Where will the art exhibition be held?A. ABC groundB. W expositionC. SSS stadiumD.W room19、--Did Anna and Mary do their homework just now?--I am not sure .A. if they did itB. whether they doC. what they doD. if did they do20、 -----It’s very kind of you to help us with the difficult task. Thanks a lot. ---- .A.NothingB. With pleasureC. All rightD. My pleasure21、I’m so nervous. I don’t know how to my feeling. Please help me.A. go overB. run afterC. deal withD. give off22、Who is the man you were chatting with a moment ago?A. whichB. whomC. whatD. whose23、--Do you think if Frank football with us tomorrow?--I think he will come if he free tomorrow.A. will play will beB. plays will beC. will play isD. plays is24、 she is tired, she can still keep working.A. Although butB. Though yetC. Because /D. As /25、You don’t look . Are you all right?A. niceB. wellC. goodD. healthy26、--I have finished the work finally. ----- .A. So do IB. So I doC. So I haveD. So have I27、Although he usually made his sister , today he was made by his sister.A. cry cryB. to cry to cryC. crying cryD. cry to cry28、You to make full preparations before accepting challenges.A. are advisedB. advisedC.advicedD. are adviced29、I’m sure that we will meet again next time.A. some timeB. sometimeC. some timesD. sometimes30、 surprised me most was you had done it so quickly.A. That thatB. That whichC. What thatD. What what二、阅读理解(本题10个小题,每小题2分,共20分)在每小题列出的四个选项中,只有一项符合题目要求,请将符合题目要求的选项字母代号选出,并填涂在答题卡上。
山东省潍坊市2021届高三上学期期中考试英语试题(含MP3+答案)
山东省潍坊市2021届高三上学期期中考试英语试题(含MP3+答案)山东省潍坊市2020-2021学年度上学期期中考试高三英语试题2020.11注意事项:1. 本试卷由四个部分组成。
其中,第一、二部分和第三部分的第一节为选择题。
第三部分的第二节和第四部分为非选择题。
2. 答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。
3. 回答选择题时,选出每小题答案后,用2B铅笔把答题卡上对应题目的答案标号涂黑;回答非选择题时,将答案写在答题卡上,写在本试卷上无效。
4. 考试结東后,将本试卷和答题卡一并交回。
第一部分听力[共两节,满分30分]该部分分为第一、第二两节。
注意: 回答听力部分时,请先将答案标在试卷上。
听力部分结束前,你将有两分钟的时间将你的答案转涂到答题卡上。
第一节(共5小题;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,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1. Where are the speakers?A. At an airport.B. In a hotel.C. In a market.2. Why doesn’t the woman try to get a PHD now?A. She doesn’t need one for her job.B. She can’t afford the payment.C. She can’t spare the time.3. How does the boy find his parents?A. Strict.B. Tolerant.C. Considerate.4. What did the woman mean?A. She failed to see the whole program.B. She stayed awake the whole.C. She went home very late.5. What are the speakers mainly talking about?A. How fruits were harvested. B Why the fruit sales increased.C. What caused the low price of fruits.第二节(共15小题; 每小题1.5分,满分2.5分)听下面5段对话或独白。
山东省济南市2020-2021学年高三上学期期末考试数学试题(含解析)
山东省济南市2021届高三第一学期期末检测数学试卷一、单项选择题(本大题共8小题,每小题5分,共计40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,请把答案添涂在答题卡相应位置上) 1.设集合{}2A |60x x x =−−≤,{}B |10x x =−<,则AB =A .{}|3x x ≤B .{}|31x x −≤<C .{}|21x x −≤<−D .{}|21x x −≤< 2.已知复数i1i z =+(其中i 为虚数单位),则z 的共轭复数为 A .11i 22−+ B .11i 22−− C .11i 22+ D .11i 22−3.已知直线l 过点(2,2),则“直线l 的方程为y =2”是“直线l 与圆224x y +=相切”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4.十二生肖是中国特有的文化符号,有着丰富的内涵,它们是成对出现的,分别为鼠和牛、虎和兔、龙和蛇、马和羊、猴和鸡、狗和猪六对.每对生肖相辅相成,构成一种完美人格.现有十二生肖的吉祥物各一个,按照上面的配对分成六份.甲、乙、丙三位同学依次选一份作为礼物,甲同学喜欢牛和马,乙同学喜欢牛、狗和羊,丙同学所有的吉祥物都喜欢.如果甲、乙、丙三位同学选取的礼物中均包含自己喜欢的生肖,则不同的选法种数共有A .12种B .16种C .20种D .24种5.已知菱形ABCD 的边长为2,∠BAD =120°,点E ,F 分别在边BC ,CD 上,且满足BEEC =,CD 2CF =,则AE AF +=AB .3C .D .46.把物体放在空气中冷却,如果物体原来的温度是1C θ︒,空气的温度是0C θ︒,那么min t后物体的温度θ(单位:C ︒)满足公式010()e kt θθθθ−=+−(其中k 为常数).现有52C ︒的物体放在12C ︒的空气中冷却,2min 后物体的温度是32C ︒.则再经过4min 该物体的温度可冷却到A .12C ︒B .14.5C ︒ C .17C ︒D .22C ︒7.已知双曲线C :22221(00)x y a b a b−=>>,的左、右顶点分别为A ,B ,其中一条渐近线与以线段AB 为直径的圆在第一象限内的交点为P ,另一条渐近线与直线PA 垂直,则C 的离心率为A .3B .2C D8.已知函数()(1)e x f x a x x =+−,若存在唯一的正整数0x ,使得0()0f x <,则实数a 的取值范围是 A .[12e −,334e ) B .[334e ,223e ) C .[223e ,12e ) D .[12e ,12) 二、 多项选择题(本大题共4小题,每小题5分, 共计20分.在每小题给出的四个选项中,至少有两个是符合题目要求的,请把答案添涂在答题卡相应位置上)9.为落实《山东省学生体质健康促进条例》的要求,促进学生增强体质,健全人格,锤炼意志,某学校随机抽取了甲、乙两个班级,对两个班级某一周内每天的人均体育锻炼时间(单位:分钟)进行了调研.根据统计数据制成折线图如下:下列说法正确的是A .班级乙该周每天的人均体育锻炼时间的众数为30B .班级甲该周每天的人均体育锻炼时间的中位数为72C .班级甲该周每天的人均体育锻炼时间的极差比班级乙的小D .班级甲该周每天的人均体育锻炼时间的平均值比班级乙的大10.已知函数12()sin(2)cos(2)f x a x b x ϕϕ=+++(()f x 不恒为0),若()06f π=,则下列说法一定正确的是A .()12f x π−为奇函数 B .()f x 的最小正周期为πC .()f x 在区间[12π−,125π]上单调递增 D .()f x 在区间[0,2021π]上有4042个零点 11.如图,在正四棱柱ABCD—A 1B 1C 1D 1中,AA 1=2AB =2,点P 为线段AD 1上一动点,则下列说法正确的是 A .直线PB 1∥平面BC 1DB .三棱锥P—BC 1D 的体积为13C .三棱锥D 1—BC 1D 外接球的表面积为32π D .直线PB 1与平面BCC 1B 112.已知红箱内有5个红球、3个白球,白箱内有3个红球、5个白 第11题球,所有小球大小、形状完全相同.第一次从红箱内取出一球后再放回去,第二次从与第一次取出的球颜色相同的箱子内取出一球,然后再放回去,依次类推,第k +1次从与第k 次取出的球颜色相同的箱子内取出一球,然后再放回去.记第n 次取出的球是红球的概率为n P ,则下列说法正确的是A .21732P =B .117232n n P P +=+C .211221()2n n n n n n P P P P P P ++++−=−+D .对任意的i ,j N *∈且1i j n ≤<≤,11111()()(14)(14)22180n n i ji j nP P −−≤<≤−−=−−∑ 三、填空题(本大题共4小题, 每小题5分,共计20分.请把答案填写在答题卡相应位置上)13.已知1sin()63απ+=,则5sin()6απ−的值为 . 14.若实数x ,y 满足lg lg lg()x y x y +=+,则xy 的最小值为 . 15.已知奇函数()f x 在(0,+∞ )上单调递减,且(4)0f =,则不等式(1)0xf x +>的解集为 .16.已知直线l 与抛物线C :28y x =相切于点P ,且与C 的准线相交于点T ,F 为C 的焦点,连接PF 交C 于另一点Q ,则△PTQ 面积的最小值为 ;若|TF |5=,则|PQ |的值为 .(本小题第一空2分,第二空3分)四、解答题(本大题共6小题,共计70分.请在答题卡指定区域内作答.解答时应写出文字说明、证明过程或演算步骤)在平面四边形ABCD 中,AB =2,BC =5,∠ABC =120°,AD,∠ADC =2∠ACD ,求△ACD 的面积. 18.(本小题满分12分)已知数列{}n a 的前n 项和2n S n =. (1)求数列{}n a 的通项公式; (2)在①218()n n n nb a a +=⋅,②2n n n b a =⋅,③(1)n n n b S =−⋅这三个条件中任选一个,补充在下面的问题中,并求解该问题.若 ,求数列{}n b 的前n 项和n T .注:如果选择多个条件分别解答,按第一个解答计分.19.(本小题满分12分)如图,在三棱柱ABC—A 1B 1C 1中,AB =AC =2,D 为BC 的中点,平面BB 1C 1C ⊥平面ABC ,设直线l 为平面AC 1D 与平面A 1B 1C 1的交线.(1)证明:l ⊥平面BB 1C 1C ;(2)已知四边形BB 1C 1C 为边长为2的菱形,且∠B 1BC =60°,求二面角D—AC 1—C 的余弦值.某县在实施脱贫工作中因地制宜,着力发展枣树种植项目.该县种植的枣树在2020年获得大丰收,依据扶贫政策,所有红枣由经销商统一收购.为了更好的实现效益,县扶贫办从今年收获的红枣中随机选取100千克,进行质量检测,根据检测结果制成如图所示的频率分布直方图.右表是红枣的分级标准,其中一级品、二级品统称为优质品.经销商与某农户签订了红枣收购协议,规定如下:从一箱红枣中任取4个进行检测,若4个均为优质品,则该箱红枣定为A 类;若4个中仅有3个优质品,则再从该箱中任意取出1个,若这一个为优质品,则该箱红枣也定为A 类;若4个中至多有一个优质品,则该箱红枣定为C 类;其它情况均定为B 类.已知每箱红枣重量为10千克,A 类、B 类、C 类的红枣价格分别为每千克20元、16元、12元.现有两种装箱方案:方案一:将红枣采用随机混装的方式装箱;方案二:将红枣按一、二、三、四等级分别装箱,每箱的分拣成本为1元. 以频率代替概率解决下面的问题.(1)如果该农户采用方案一装箱,求一箱红枣被定为A 类的概率; (2)根据所学知识判断,该农户采用哪种方案装箱更合适,并说明理由.21.(本小题满分12分)已知椭圆C :22221(0)x y a b a b+=>>(1)求椭圆C 的标准方程;(2)若折线0)y k x =≠与C 相交于A ,B 两点(点A 在直线x =的右侧),设直线OA ,OB 的斜率分别为1k ,2k ,且212k k −=,求k 的值.22.(本小题满分12分)已知函数()ln(1)f x a x x =−+. (1)讨论()f x 的单调性; (2)若1()e 1x f x x −≥−+对任意的x ∈(0,+∞)恒成立,求实数a 的取值范围.山东省济南市2021届高三第一学期期末检测数学试卷一、单项选择题(本大题共8小题,每小题5分,共计40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,请把答案添涂在答题卡相应位置上) 1.设集合{}2A |60x x x =−−≤,{}B |10x x =−<,则AB =A .{}|3x x ≤B .{}|31x x −≤<C .{}|21x x −≤<−D .{}|21x x −≤< 答案:D解析:{}2A |60x x x =−−≤=[﹣2,3],{}B |10x x =−<=(−∞,1),故AB =[﹣2,1).选D .2.已知复数i1i z =+(其中i 为虚数单位),则z 的共轭复数为 A .11i 22−+ B .11i 22−− C .11i 22+ D .11i 22−答案:D解析:i i(1i)1i1i (1i)(1i)22z −===+++−,则1i 22z =−.选D . 3.已知直线l 过点(2,2),则“直线l 的方程为y =2”是“直线l 与圆224x y +=相切”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答案:A解析:“直线l 的方程为y =2”⇒“直线l 与圆224x y +=相切”, “直线l 与圆224x y += 相切”“直线l 的方程为y =2”,故选A .4.十二生肖是中国特有的文化符号,有着丰富的内涵,它们是成对出现的,分别为鼠和牛、虎和兔、龙和蛇、马和羊、猴和鸡、狗和猪六对.每对生肖相辅相成,构成一种完美人格.现有十二生肖的吉祥物各一个,按照上面的配对分成六份.甲、乙、丙三位同学依次选一份作为礼物,甲同学喜欢牛和马,乙同学喜欢牛、狗和羊,丙同学所有的吉祥物都喜欢.如果甲、乙、丙三位同学选取的礼物中均包含自己喜欢的生肖,则不同的选法种数共有A .12种B .16种C .20种D .24种答案:B解析:甲若选牛,则有1124C C 种;甲若选马,则有1124C C 种.故共有16种,选B .5.已知菱形ABCD 的边长为2,∠BAD =120°,点E ,F 分别在边BC ,CD 上,且满足BEEC =,CD 2CF =,则AE AF +=AB .3 C.D .4答案:B解析:由题意知△AEF 的等边三角形,故AE AF +=3,选B .6.把物体放在空气中冷却,如果物体原来的温度是1C θ︒,空气的温度是0C θ︒,那么min t后物体的温度θ(单位:C ︒)满足公式010()e kt θθθθ−=+−(其中k 为常数).现有52C ︒的物体放在12C ︒的空气中冷却,2min 后物体的温度是32C ︒.则再经过4min 该物体的温度可冷却到A .12C ︒B .14.5C ︒ C .17C ︒D .22C ︒ 答案:C解析:221321240e e 2k k −−=+⇒=,6311240e 1240()172k θ−=+=+⨯=,故选C . 7.已知双曲线C :22221(00)x y a b a b−=>>,的左、右顶点分别为A ,B ,其中一条渐近线与以线段AB 为直径的圆在第一象限内的交点为P ,另一条渐近线与直线PA 垂直,则C 的离心率为A .3B .2CD 答案:B解析:将直线AP 与斜率为正数的渐近线方程联立:()a y x a bb y x a ⎧=+⎪⎪⎨⎪=⎪⎩,解得P(322a b a −,222a b b a −),因为OP =a ,则322222222()()a a b a b a b a+=−−,化简得2222222334a b a c a c a =⇒=−⇒=2e ⇒=,选B .8.已知函数()(1)e x f x a x x =+−,若存在唯一的正整数0x ,使得0()0f x <,则实数a 的取值范围是 A .[12e −,334e ) B .[334e ,223e ) C .[223e ,12e ) D .[12e ,12) 答案:C解析:0()0f x <,参变分离得:000(1)e x x a x <+,令000()(1)(1)e x x g x x x =≥+,2000201()0(1)e x x x g x x +−'=−<+,所以0()g x 在[1,+∞)且0x Z ∈单调递增, 求得1(1)2e g =,22(2)3eg =,故要使存在唯一的正整数0x ,使得0()0f x <, 则223e ≤a <12e,选C . 二、 多项选择题(本大题共4小题,每小题5分, 共计20分.在每小题给出的四个选项中,至少有两个是符合题目要求的,请把答案添涂在答题卡相应位置上)9.为落实《山东省学生体质健康促进条例》的要求,促进学生增强体质,健全人格,锤炼意志,某学校随机抽取了甲、乙两个班级,对两个班级某一周内每天的人均体育锻炼时间(单位:分钟)进行了调研.根据统计数据制成折线图如下:下列说法正确的是A .班级乙该周每天的人均体育锻炼时间的众数为30B .班级甲该周每天的人均体育锻炼时间的中位数为72C .班级甲该周每天的人均体育锻炼时间的极差比班级乙的小D .班级甲该周每天的人均体育锻炼时间的平均值比班级乙的大 答案:AC解析:班级甲该周每天的人均体育锻炼时间的中位数为65,故B 错误;班级甲该周每天的人均体育锻炼时间的平均值比班级乙的小,故D 错误.综上选AC .10.已知函数12()sin(2)cos(2)f x a x b x ϕϕ=+++(()f x 不恒为0),若()06f π=,则下列说法一定正确的是 A .()12f x π−为奇函数 B .()f x 的最小正周期为π C .()f x 在区间[12π−,125π]上单调递增 D .()f x 在区间[0,2021π]上有4042个零点答案:BD解析:()12f x π−为偶函数,故A 错误;()f x 在区间[12π−,125π]上单调,但不一定是单调递增,故C 错误.综上选BD .11.如图,在正四棱柱ABCD—A 1B 1C 1D 1中,AA 1=2AB =2,点P 为线段AD 1上一动点,则下列说法正确的是A .直线PB 1∥平面BC 1DB .三棱锥P—BC 1D 的体积为13C .三棱锥D 1—BC 1D 外接球的表面积为32πD .直线PB 1与平面BCC 1B 1答案:ABD解析:因为平面AB 1D 1∥平面BC 1D ,PB 1⊂平面AB 1D 1,所以直线PB 1∥平面BC 1D ,A 正确;V P—BC1D =V A—BC1D =V C1—ABD =111112=323⨯⨯⨯⨯,故B 正确;三棱锥D 1—BC 1D=S 球=246ππ=,故C 错误;PB 1min 点P 到平面BCC 1B 1的距离为1,所以直线PB 1与平面BCC 1B 1所成角的正弦值的最,故D 正确.综上选ABD .12.已知红箱内有5个红球、3个白球,白箱内有3个红球、5个白球,所有小球大小、形状完全相同.第一次从红箱内取出一球后再放回去,第二次从与第一次取出的球颜色相同的箱子内取出一球,然后再放回去,依次类推,第k +1次从与第k 次取出的球颜色相同的箱子内取出一球,然后再放回去.记第n 次取出的球是红球的概率为n P ,则下列说法正确的是A .21732P =B .117232n n P P +=+C .211221()2n n n n n n P P P P P P ++++−=−+D .对任意的i ,j N *∈且1i j n ≤<≤,11111()()(14)(14)22180n n i ji j nP P −−≤<≤−−=−−∑ 答案:ACD解析:第n 此取出球是红球的概率为n P ,则白球概率为(1)n P −,对于第1n +次,取出红球有两种情况. ①从红箱取出1(1)58n n P P +=⋅(条件概率), ②从白箱取出2(1)3(1)8n nP P +=−⋅, 对应121(1)(1)3184n n n n P P P P +++=+=+(转化为数列问题), 所以1111()242n n P P +−=−, 令12n n a P =−,则数列{n a 为等比数列,公比为14,因为158P =,所以118a =, 故2(21)2n n a −+=即对应(21)122n n P −+=+, 所以21732P =,故选项A 正确; [2(1)1](21)231111112[2]222224n n n n n P P −++−+−−+−=+−⨯+=−,故117232n n P P +=+不成立,故选项B 错误; 经验证可得,211221()2n n n n n n P P P P P P ++++−=−+,故选项C 正确;1(21)(21)11111()()2222n ni j i j i j n i j i P P −−+−+<==+−−=⋅∑∑∑ 1(21)(23)(23)142[22]3n i i n i −−+−+−+==⋅−∑11(44)(23)(21)114[222]3n n i n i i i −−−+−+−+===−∑∑ 844(23)3214164[(22)2(22)]3153n n n −−−−+−−−=−−⋅− 424141122218045369n n n −−−=−⋅−⋅+⋅ 421(14252)180n n −−=+⋅−⋅ 221(142)(12)180n n −−=−⋅−11(14)(14)180n n −−=−−,故D 正确. 三、填空题(本大题共4小题, 每小题5分,共计20分.请把答案填写在答题卡相应位置上)13.已知1sin()63απ+=,则5sin()6απ−的值为 . 答案:13解析:51sin()sin[()]sin()6663ππαπααπ−=−+=+=. 14.若实数x ,y 满足lg lg lg()x y x y +=+,则xy 的最小值为 .答案:4解析:11lg lg lg()1x y x y xy x y x y+=+⇒=+⇒+=, 11()()24y xxy x y x y x y x y=+=++=++≥,当且仅当x =y =2时取“=”.15.已知奇函数()f x 在(0,+∞ )上单调递减,且(4)0f =,则不等式(1)0xf x +>的解集为 .答案:(0,3)(﹣5,﹣1)解析:0(1)0(1)0x xf x f x >⎧+>⇒⎨+>⎩或003(1)0x x f x <⎧⇒<<⎨+<⎩或51x −<<−,故原不等式的解集为(0,3)(﹣5,﹣1).16.已知直线l 与抛物线C :28y x =相切于点P ,且与C 的准线相交于点T ,F 为C 的焦点,连接PF 交C 于另一点Q ,则△PTQ 面积的最小值为 ;若|TF |5=,则|PQ |的值为 .(本小题第一空2分,第二空3分)答案:16,252解析:当PQ 为抛物线通径时△PTQ 的面积最小,为16;当TF =5时,可得线段PQ 中点的纵坐标为3或﹣3,故PQ 的斜率为43或43−,故PQ =2228254sin 2()5p α==. 四、解答题(本大题共6小题,共计70分.请在答题卡指定区域内作答.解答时应写出文字说明、证明过程或演算步骤) 17.(本小题满分10分)在平面四边形ABCD 中,AB =2,BC =5,∠ABC =120°,AD,∠ADC =2∠ACD ,求△ACD 的面积.解:在△ABC 中,由余弦定理可得:所以在△ACD 中,由正弦定理可得:,即所以所以 因为,所以所以所以18.(本小题满分12分)已知数列{}n a 的前n 项和2n S n =. (1)求数列{}n a 的通项公式; (2)在①218()n n n nb a a +=⋅,②2n n n b a =⋅,③(1)n n n b S =−⋅这三个条件中任选一个,补充在下面的问题中,并求解该问题.若 ,求数列{}n b 的前n 项和n T .注:如果选择多个条件分别解答,按第一个解答计分. 解:(1)因为所以所以当时,适合上式,所以(2)若选①: 因为所以若选②:因为所以则两式相减可得:所以若选③:当n为偶数时,当n为奇数时,综上:19.(本小题满分12分)如图,在三棱柱ABC—A1B1C1中,AB=AC=2,D为BC的中点,平面BB1C1C⊥平面ABC,设直线l为平面AC1D与平面A1B1C1的交线.(1)证明:l⊥平面BB1C1C;(2)已知四边形BB1C1C为边长为2的菱形,且∠B1BC=60°,求二面角D—AC1—C的余弦值.解:(1)证明:因为AB=AC=2,D为BC的中点,所以AD⊥BC,又因为平面BB1C1C⊥平面ABC,且平面BB1C1C平面ABC=BC,AD 平面ABC,所以AD⊥平面BB1C1C,而AD∥平面A1B1C1,且AD⊂平面AC1D,平面AC1D平面A1B1C1=l,所以AD∥l,所以l⊥平面BB1C1C;(2)因为AD⊥平面BB1C1C,AD⊂平面AC1D,所以平面AC1D⊥平面BB1C1C,在平面BB1C1C内,过C作CH⊥DC1于点H,则CH⊥平面AC1D,过C作CG⊥AC1于点G,则G为线段AC1的中点,连接HG,则∠CGH就是二面角D—AC1—C的平面角,在直角中,在中,,在中,,在直角中,,所以所以二面角D—AC1—C的余弦值为20.(本小题满分12分)某县在实施脱贫工作中因地制宜,着力发展枣树种植项目.该县种植的枣树在2020年获得大丰收,依据扶贫政策,所有红枣由经销商统一收购.为了更好的实现效益,县扶贫办从今年收获的红枣中随机选取100千克,进行质量检测,根据检测结果制成如图所示的频率分布直方图.右表是红枣的分级标准,其中一级品、二级品统称为优质品.经销商与某农户签订了红枣收购协议,规定如下:从一箱红枣中任取4个进行检测,若4个均为优质品,则该箱红枣定为A 类;若4个中仅有3个优质品,则再从该箱中任意取出1个,若这一个为优质品,则该箱红枣也定为A 类;若4个中至多有一个优质品,则该箱红枣定为C 类;其它情况均定为B 类.已知每箱红枣重量为10千克,A 类、B 类、C 类的红枣价格分别为每千克20元、16元、12元.现有两种装箱方案:方案一:将红枣采用随机混装的方式装箱;方案二:将红枣按一、二、三、四等级分别装箱,每箱的分拣成本为1元. 以频率代替概率解决下面的问题.(1)如果该农户采用方案一装箱,求一箱红枣被定为A 类的概率;(2)根据所学知识判断,该农户采用哪种方案装箱更合适,并说明理由. 解:(1)从红枣中任意取出一个,则该红枣为优质品的概率是,记“如果该农户采用方案一装箱,一箱红枣被定为A 类”为事件A ,则(2)记“如果该农户采用方案一装箱,一箱红枣被定为B 类”为事件B ,“如果该农户采用方案一装箱,一箱红枣被定为C 类”为事件C ,则所以如果该农户采用方案一装箱,每箱红枣收入的数学期望为:元;由题意可知,如果该农户采用方案二装箱,则一箱红枣被定为A 类的概率为,被定为C 类的概率也为,所以如果该农户采用方案二装箱,每箱红枣收入的数学期望为: 元;所以该农户采用方案二装箱更合适.21.(本小题满分12分)已知椭圆C :22221(0)x y a b a b+=>>(1)求椭圆C 的标准方程;(2)若折线0)y k x =≠与C 相交于A ,B 两点(点A 在直线x =的右侧),设直线OA ,OB 的斜率分别为1k ,2k ,且212k k −=,求k 的值.解:(1)由题可知22c a b a⎧=⎪⎪⎨⎪=⎪⎩,又因为,所以所以椭圆C 的标准方程为(2)因为折线与椭圆C 相交于A ,B 两点,设点B 关于x 轴的对称点为B′, 则直线与椭圆C 相交于A ,B′两点,设则由得所以所以整理得解得22.(本小题满分12分)已知函数()ln(1)f x a x x =−+. (1)讨论()f x 的单调性;(2)若1()e 1x f x x −≥−+对任意的x ∈(0,+∞)恒成立,求实数a 的取值范围. 解:(1)若,,此时在上单调递减;若,由得,此时在上单调递减,在上单调递增;综上所述,,在上单调递减;,在上单调递减,在上单调递增;(2)因为记所以在上单调递增,所以,所以恒成立;若不合题意;若,由(1)知,在上单调递减,所以不合题意;若,记记所以在上单调递增,所以所以符合题意;综上实数a的取值范围是.。
解析版山东省山师附中2020┄2021届高三第三次模拟考试 英语试题
By Eric 12注意事项:本试卷分第I卷(100分)和第II卷(50分),共150分1.答第I卷,考生务必将自己的姓名.准考证号.考试科目用铅笔涂写在答题卡上。
2.每选出答案后,用铅笔把答题卡上对应题目的答案标号涂黑,如需改动,用橡皮擦干净后,再选涂其他答案标号。
3.考试结束后,考生将第II卷和答题卡一并交回。
第I卷(共100分)第一部分:语言知识运用第一节:语法和词汇知识(共20分,每小题1分,满分20分)1.—I really can’t thank you enough, sir. — .A. That’s the most I could doB. I’m glad to have been of helpC. No problemD. With pleasure2. At your company there are a few machines similar to described in this magazine.A. theseB. themC. thoseD. ones3. John had planned to make a compromise, but he changed his mind at the last minute.A. anyhowB. otherwiseC. thereforeD. somehow【答案】D4.—Are you still mad at her?—Not really ,but I can’t that her remarks hurt me.A. denyB. refuseC. rejectD. decline5. Only after Ann read her essay the second time the spelling mistake.A. did she noticeB. she noticeC. does she noticeD. she has noticed6. There are a small number of people involved possibly twenty.A. as few asB. as little asC. as many asD. shehas noticed7. They are broadening the bridge to the flow of traffic.A. put offB. speed upC. turn onD. work out【答案】B【解析】试题分析:句意:他们拓宽了大桥来加速交通的流畅。
【英语】山东省青岛即墨区2021届高三上学期11月份期中考试检测试题(解析版)
山东省青岛即墨区2021届高三上学期11月份期中考试检测英语试题第一部分听力(共两节,满分30分)第一节(共5个小题;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,并标在试卷的相应位置。
听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。
每段对话仅读一遍。
1.Where will the woman go first?A.To the beach.B.To the bank.C.To the bathroom.2.What does the woman mean?A.The man forgot to do his hair.B.The man forgot to put on a tie.C.The man is wearing clothes that don’t match.3.How does the woman probably feel?A.Annoyed.B.Hungry.C.Excited.4.Why didn’t the man answer the phone?A.He lost it.B.He didn’t hear it.C.His phone ran out of power.5.Who did the woman want to call?A.James.B.Drake.C.Daniel.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,并标在试卷的相应位置。
听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。
每段对话或独白读两遍。
听第6段材料,回答第6、7题。
6.What does the man order?A.Hot dogs and fries.B.Burgers and fries.C.Sandwiches and sodas.7.How much does the man give the woman as a tip?A.Three dollars.B.Two dollars.C.One dollar.听第7段材料,回答第8、9题。
