广东省普宁二中等七校联合体2021届高三第一次联考试卷(8月)

普宁二中2021-2022学年度高三级物理月考卷第I卷（选择题）一、单项选择题：本题共7小题，每小题4分，共28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。

1. 2021年6月17日9时22分，“长征二号”F遥十二运载火箭成功将“神舟十二号”载人飞船中的3名航天员送入预定轨道，并顺利实现与“天和”核心舱的对接.以下说法正确的是（）A.图甲：神舟飞船与“天和”核心舱对接过程，均可视为质点B.图乙：载人飞船加速上升过程，3名航天员均处于失重状态C.图丙：3名航天员环绕地球做圆周运动过程，均处于平衡状态D.图丁：以地球为参考系，飞船与核心舱的组合体绕地球一周，平均速度为零2.在某次检测国产某品牌汽车的刹车性能时，通过传感器发现踩下刹车后，汽车的位移与时间的关系满足x = 30t-5r,则关于该次测试，下列说法正确的是（）A.汽车4s内的位移是40mB.汽车的加速度是-5m/s2C.汽车的初速度是20m/s D,汽车刹车2s后的速度是10m/s3.如图所示，甲、乙两人分别乘坐两种电动扶梯，此时两电梯都匀速向上运行，则（）A.甲受到三个力的作用B.甲受到的摩擦力水平向右°c.扶梯对乙的作用力方向垂直扶梯向上甲A <2^d.扶梯对乙的作用力方向竖直向上n仁尸4.2018年10月24日港珠澳大桥正式通车运营，港珠澳大桥是“一国两制”框架下粤港澳三地首次合作建设的世界级超大型跨海交通工程.一辆汽车由引桥驶上大桥，开始加速通过大桥，汽车加速的过程可看作是匀变速直线运动，其运动的三-f图像如图所示.下t列判断正确的是（）丰阴影部分的面积表示3 ~时间内汽车通过的位移B.汽车运动的初速度大小为人2bC.汽车运动的加速度大小为丁D.O~t o时间内，汽车的平均速度大小为2b5.发光弹性球很受儿童喜爱，一儿童把弹性球竖直上抛，从空中的最高点开始计时，下列描述发光弹性球运动的图像中正确的是（）6. 重力分别为50N 和60 N 的木块A 、B 间连接有水平轻弹簧，两木块静止在水平面上，A 、B 与水平面间的动摩擦因数均为0. 25,弹簧被拉长了 2 cm,弹簧的劲度系数为400 N/m.现 用大小为F=5N 、方向水平向右的拉力作用在木块B 上，如图所示.已知最大静摩擦力等于滑动摩擦力，则力F 作用后木块A 、B 所受的摩擦力的大小分别是（ ）A. 8N 3NB. 8N 8NC. 8N 13ND. 0 0 ______ r-^-, F0000000 —►7. 现代的激光打印机都是自动进纸的，有一种进纸原理如图所示.进纸槽里〃/方7/〃；〃〃〃〃//〃〃；/〃〃叠放有一叠白纸，进纸时滚轮以竖直向下的力压在第一张白纸上，并沿逆时针方向匀速转动， 确保第一张纸与第二张纸发生相对滑动.设最大静摩擦力与滑动摩擦力相等.滚轮与白纸之 间的动摩擦因数为印，白纸之间、白纸与纸槽底座之间的动摩擦因数均为佬.不考虑静电 力的影响，下列说法正确的是（ ）A. 滚轮对第一张白纸的摩擦力方向向左B. 若村＜"2则打印机不能实现自动进纸C. 除最上面第一、二张白纸外越向下白纸之间的摩擦力越大D. 进纸过程中除最上面第一、二张白纸外其它纸之间均没有摩擦力二、多项选择题：本题共3小题，每小题6分，共18分。

2020-2021学年度普宁市第二中学第一学期高三语文第1次阶段考试卷一、现代文阅读(36分)(一)论述类文本阅读(本题共3小题，9分)阅读下面的文字，完成1一3题。

什么东西都可以低估，但唯独不能低估青春的能量；青年时期的积累与沉淀，往往影响着一个人一生的发展。

诗人艾青有句名言：“为什么我的眼里常含泪水，因为我对这土地爱得深沉。

”家国情怀是一种源自内心的质朴情感，也可说是每个人的立身之本。

对于当代青年来说，只有常怀感恩之心、砥砺家国情怀，才能自觉地把个人的前途命运与国家、民族、社会紧密地融合在一起。

家国情怀深深植根于我们的灵魂之中，内化于心、外化于行，铭刻于骨、融化于血。

家国情怀既体现为一种民族大义，也是庚续传承的文化传统。

大禹治水三过家门而不入，戚继光抗倭保家卫……回溯既往，从神话故事到历史典故，浓浓的家国情怀之中，都体现着民族大义。

《礼记大学》的“修身、齐家、治国、平天下”，屈原的“路漫漫其修远兮，吾将上下而求索”，范仲淹的“先天下之忧而忧，后天下之乐而乐”……家国情怀世代相传，成为中国人的一种文化基因。

事实证明，没有伟大的国家和民族，就难言个人的尊严。

因此，无论何时，我们都应将家国情怀牢记在心。

人无精神不立，国无精神不强。

家国情怀突出体现为爱国奉献的精神，堪称一种精神坐标。

邓小平同志曾说：“我是中国人民的儿子，我深情地爱着我的祖国和人民。

”真挚的话语，饱含着爱与真情，这正是浓厚家国情怀的写照。

“家是最小国，国是千万家”。

爱国不能停留在口头上，而应体现在行动之中。

西藏玉麦乡牧民卓嘎、央宗姐妹的事迹为什么感动了亿万人？就在于她们以行动诠释爱国情感，为祖国守护神圣土地。

对于个体而言，要关注国家为我们做了些什么，更要多问问自己为国家能做什么、做了些什么。

可以说，家国情怀需要我们爱国、奉献、担当、作为，在日常工作生活中不断升华爱国奋斗精神。

今天，家国情怀更体现为一种时代责任。

奋进在新时代，亟待我们激荡新气象、成就新作为，为实现中华民族伟大复兴的中国梦凝聚磅礴力量。

七校联合体2021届高三第一次联考试卷（8月）数学命题学校：命题人：审题人：本试卷共4页，22小题，满分150分．考试用时120分钟．注意事项：1．答卷前，考生务必将自己的准考证号、姓名填写在答题卡上。

2．回答选择题时，选出每小题答案后，用2B 铅笔把答题卡对应题目的答案标号涂黑。

如需改动，用橡皮擦干净后，再选涂其它答案标号。

3.回答非选择题时，将答案写在答题卡上。

写在本试卷、草稿纸或答题卡的非答题区上无效。

4．考生必须保持答题卡的整洁，考试结束后，将答题卡交回．第Ⅰ卷一．选择题:本大题共8小题，每小题5分，满分40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．1.设集合{1,2}A =,则满足{1,2,3}A B ⋃=的集合B 的个数是()A．1B．3C．4D．82.已知，ni im-=+11=+ni m i n m 是虚数单位，则是实数，，其中()A .i +2B．i -2C．i 21-D．i21+3.设点P 是函数x x f ωsin )(=的图象C 的一个对称中心，若点P 到图象C 的对称轴上的距离的最小值8π，则)(x f 的最小正周期是()A．π2 B.πC.2π D.4π 4.已知向量(3,1)a =，b 是不平行于x 轴的单位向量，且3a b = ，则b = ()A．（31,22）B．（13,22）C．（133,44）D．（1,0）5.若nxx )13-（的展开式中各项系数之和为64，则展开式的常数项为()A．－540（B）－162C．162（D）5406.已知()f x 是周期为2的奇函数，当01x <<时，()lg .f x x =设63(),(),52a f b f ==5(),2c f =（）A．a b c <<B．b a c <<C．c b a<<D．c a b<<7．若点P 是曲线1ln 2--=x x y 上任意一点，则点P 到直线2-=x y 的最小距离为()A．1B．22C．2D．28．有A 、B 、C 、D 、E 、F 共6个集装箱，准备用甲、乙、丙三辆卡车运送，每台卡车一次运两个。

广东省七校联合体2021届高三第一次联考试卷（8月）理科数学一、选择题：本题共12小题，每小题5分，共60分。

在每小题给出的四个选项中，只有一项符合题目要求。

1.已知集合，集合，则AB =（ ）A ．(2,3)B ．(1,2)-C ．(3,3)-D ．(1,3)- 2.已知i 为虚数单位，(1)3z i i +=-，则在复平面上复数z 的共轭复数对应的点位于（ ）A ．第一象限B ．第二象限C ．第三象限D ．第四象限 3.为比较甲、乙两名高中学生的数学素养，对课程标准中规定的数学六 大素养进行指标测验（指标值满分为5分，分值高者为优），根据测验情 况绘制了如图所示的六大素养指标雷达图，则下面叙述正确的是（ ）A ．乙的数据分析素养优于甲B ．乙的数学建模素养优于数学抽象素养C ．甲的六大素养整体水平优于乙D ．甲的六大素养中数据分析最差 4. 已知1cos(),63πα+=则sin(2)6πα-=（ ） A ．79-B ．79C ．89D ． 89-5.已知抛物线21:12C y x =与双曲线2222:13x y C a -=的焦点相同，双曲线2C 的离心率为（ ）A. 2B. 6C. 62D. 526.若函数()sin()(0)3f x x πωω=+>的最小正周期为π，若将其图象向左平移12π个单位，得到函数()g x 的图象，则函数()g x 的解析式为（ ）A ．1()sin()26g x x π=+ B ．1()sin()23g x x π=- C ．()sin(2)6g x x π=+D ．()cos 2g x x =7.在直角梯形ABCD 中，4,2AB CD ==，//,AB CD AB AD ⊥，E 是BC 的中点，则2{|60}A x x x =+->{|13}B x x =-<<()AB AC AE ⋅+=（ ）A ．B ．C ．D ． 8.设函数21()ln1xf x x x+=-，则函数()f x 的图象可能为（ ） A ． B ．C ．D ．9.已知长方体1111ABCD A B C D -中，14,2AB CC ==，长方体的体积是32，则直线1BC 和平面11DBB D 所成角的正弦值为（ ）A.32 B. 52 C. 105 D. 101010.已知抛物线2:4C y x =,过焦点F 3的直线与C 相交于,P Q 两点,且,P Q 两点在准线上的投影分别为,M N 两点,则MFN S ∆=（ ）A.83 B.833C.163D.163311.图中长方形的总个数中，其中含阴影部分的长方形个数的概率为（ ）A. 124 B.1235C. 115D. 3121012. 已知数列的前项和为，若为函数的最大值，且满足，则数列的前2019项之积2019A =（ ） {}n a n n S 1a ()()3sin cos f x x x x =+∈R 112n n n n n a a a S a S +-=-{}n aA ．20192B ．C ．D ． 1二、填空题：本题共4小题，每小题5分，共20分。

届高三第一次联考英语试卷考试用时：120分钟满分：120分命题学校：普宁二中命题人：审题人：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，并在答题卡上将该项涂黑。

AIt’s almost camp season!Summer is wonderful. Summer at one of the following awesome camps? Even more wonderful. Tahosa High Adventure BaseLocation: Ward, ColoradoPeople puzzle: Tahosa’s ropes courses are some of the nation’s best. Use your hands, feet and brains to take up high-flying challenges and overcome your fears. Fly fishing at 9,000 feet? Yes. Fishing licenses or experience needed? No, sir!Choose your adventure: Go all-inclusive, where the staff prepares meals and runs the program, or take control and plan your perfect week. The choice is yours.Camp RaymondLocation: Parks, ArizonaDon’t look down: When looking up at the stars, light pollution is your enemy. But Camp Raymond’s location and elevation (海拔) of 6,700 feet offer perfect conditions for seeing otherwise invisible stars.That’s cool: Don’t forget your camera and a jacket. During the day, you could spot bears and deer. At night, temperatures can fall sharply. Hot cocoa at summer camp? Cool.Pamlico Sea BaseLocation: Blounts Creek, North Carolina.Go coastal: Explore the Carolina coast by boat. You choose the route, and Pamlico provides the equipment. Keep an eye out for wild horses, lighthouses and boatloads of fish.Set sail: Even if you don’t know the difference between starboard and star-lord, Pamlico’s sailingjourney will make you a first-rate sailor in no time. You’ll even practice finding your way using the stars.Base CampLocation: St. Paul, MinnesotaBig upgrade: What happens when you change a 1907 cavalry drill hall (骑兵训练场) into an adventure destination in the heart of the city? You get Base Camp for overnight lock-ins, weekend retreats (隐居处) and summer camp.Inside out: Most of Base Camp is indoors, meaning the activities like climbing walls can be undertaken on winter’s coldest days.1. What do we know about Tahosa High Adventure Base?A. It requires fishing licensesB. It offers lessons on flying a planeC. It’s a camp that is intended for brave kidsD. It is a camp where you can set your own pace2. What can be learned in Pamlico Sea Base?A. How to tell starboard from star-lord B How to choose camping equipmentC. How to use the stars for directionsD. How to make a boat on your own3 In which camp can kids climb walls inside on winter days?A. Base CampB. Camp RaymondC. Pamlico Sea BaseD. Tahosa High Adventure Base.B“You’ll be blind by the time you’re twenty-five,” a doctor at Children’s Hospital predicted. “Your blood sugars are much too high.” It consumed me. No matter where I was or what I was doing, it was overhead like a dark cloud, waiting for just the right opportunity to break open and destroy my world.I liked painting. Losing myself in painting filled me with peace. Painting provided me with the only place where I could escape from those threatening words.When I was twenty-one, my right eye went blind. Precisely three months after my twenty-fifth birthday, I had a massive hemorrhage (大出血) in my left eye because of an accident. For the next twenty years, vision came and went. I went through many eye operations in an attempt to keep my vision. But after one final operation, I lost the battle and all remaining vision. And I buried all dreams of painting.Desperate, I enrolled in (注册) a sixteen-week program for the blind and visually impaired (损伤的). I learned personal adjustment and the use of a computer with adaptive software. A whole new world opened up to me through this program.“Jaws and Window-Eyes are leading software for the blind,” my instructor told me. “You can use the Internet, e-mail and Microsoft with all its tools and features.” It’s amazing! Hope went up for the first time in years. “By learning how to use hot keys to control the mouse, you can use Microsoft Access, Excel and Powerpoint,” my instructor added.For the next several years, I learned that when one door closes, another door opens. There are plenty of choices available for the blind and visually impaired through the gift of technology. Not only do I have a speaking computer, but I have a speaking watch, alarm clock and calculator.4.What does the underlined word “it” in Paragraph 1 refer to?A. The right opportunity.B. Losing my sight in the future.C. Consuming too much sugarD. The children’s hospital.5. What happened when the author was 25 years old?A. He gave up painting.B. He went blind completelyC. He injured one of his eyes.D. He picked up a new hobby6. What brought a turning point to the author?A. A special course.B. A meaningful eventC. An inspiring speech.D. An important interview.7. What does the author intend to tell us?A. No pain, no gain.B. Every man has his price.C. Nothing is impossible to a willing heart.D. Be optimistic in the face of life’s difficulties.CThese days, I walk down the steps leading toward the south end of the All England Club in Wimbledon, and still look for the Crow’s Nest, a small green observation tower with an outer ladder that I used to climb on for a wide view of the grounds, but which has since been knocked down.The Crow’s Nest was a particularly useful point, because it allowed a tennis writer to keep trackof the action on as many as 10 outside courts at a time. At days end, reporters from different nations would share notes on what they had observed all over the grounds.Twenty-seven years later, the press room has touch screens that allow us to watch live videos fromany court, and even go back to watch key moments in key matches long after they have finished. You could cover Wimbledon without leaving your seat. But that is a bit like spending all your time ordering room service and looking up fun facts on Wikipedia.More than at any other tennis tournament, there is also an appetite for stories that deal with the setting, the history and the traditions.If they change the price of the fish tacos (鱼肉卷饼) at the United States Open, it’s not a story. If they change the price of the strawberries and cream, the signature treat at Wimbledon. It’s time to email your editor using capital letters.The new retractable (可伸缩的) roof was put in place in 2009. Until then, you always had to have a rainy-day story in your notebook because there were no guarantees any matches would be played. Now tennis is a sure thing on Centre Court, which has made tennis reporters a bit less creative. But at least it guarantees us daily access to the most atmospheric place in the sport.So much has changed, but Centre Court remains true to its original spirit: more a theater than a stadium. Catching that feeling is part of covering Wimbledon, too.8. What did the author do on the Crow’s Nest in the past?A. He made friends with reporters.B. He reported on tennis matches.C. He appreciated the beautiful scenery.D. He exchanged experiences with tennis players.9. What does the author think of the new way of covering Wimbledon?A. It lacks fun.B. It is expensiveC. It is not convenient.D. It is not quick enough10. Why does the author mention strawberries and cream?A. To compare popular foods.B. To introduce the typical treat at Wimbledon.C. To describe people’s craze for traditional dishes.D. To show the traditions of Wimbledon are an attraction.11. What difference does the new roof make?A. Audiences have easier access to a tennis court.B. There’s less fun in watching Wimbledon indoors.C. Reporters are struggling to find original material.D. rainy-day stories about Wimbledon have become history.DOn January 13, 2016, France became the first country in the world to pass a law requiring supermarkets to donate food that is approaching its expiration date (保质期) instead of throwing it away. The regulation that applies to supermarkets over 4,000 square feet requires stores to sign official donation agreements with local food banks.The law also makes it illegal for stores to pour water over nearly-expired food, or store it inside locked warehouses until it is picked up by the garbage trucks. These measures are often undertaken by supermarkets to prevent the hungry from searching for food through the dustbins.Though that may appear cruel, the stores claim they do it to avoid potential food poisoning that could occur if the product is on its way past its expiry. Those who do not obey the new law face the risk of heavy fines.Also, excess goods like yogurt or milk that are likely to go bad quickly are now allowed to be donated directly to the food banks. Though this has always been possible, the current process is long and complex, making it difficult for producers to give away the food in a timely manner.France’s food banks are of course thrilled about the possibility of receiving extra food. Jacques Bailet, who heads a network of French food banks called the Banques Alimentaires, says that of the 110,000 tons of goods received annually, only 36,000 tons comes from supermarkets. Bailet estimates (估计) that just a 15% increase in supermarket donations would translate to over 10 million additional meals to feed the hungry each year.Though this is a great first step, Arash Dermabarsh, the activist responsible for the grassroots movement that led to the ban, is not done. He now wants to extend the law to other places like restaurants and also try to convince other countries in the European Union to pass similar regulations. These steps are necessary because of the over 9 million tons of food wasted in France; an astonishing 67% is thrown away by consumers, with supermarkets and restaurants making up the rest.12. What should stores do with nearly-expired food?A. Throw it away.B. Send it to the hungry.C. Store it in refrigerators.D. Give it away to food banks.13. What does the underlined word “excess” in Paragraph 4 probably mean?A. Extra.B. Cheap.C. Seasonal.D. Returned.14. What might Bailet agree with about the French food banks?A. They have a lot of expired food.B. They will get much benefit from the law.C. Their food is enough for the people in need.D. Their food mainly comes from supermarkets.15. What does Dermabarsh plan to do?A. Build more food banks in France.B. Make the law take effect in more places.C. Organize a campaign to promote this law.D. Raise consumers awareness of waste reduction.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。

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七校联合体2021届高三第一次联考试卷（8月）英语科目命题学校：命题人：审题人：本试卷共6页，满分120分，考试用时120分钟。

说明：1.请注意在对应．．．．．．．．，误涂或错涂不得分；．．的．题号上填涂答题卡2.请注意在对应．．．，误填或错填不得分。

．．．上作答．．的．答题卷第一部分阅读理解(共两节，满分35分)第一节(共10小题；每小题2.5分，满分25分)阅读下列短文，从每题所给的A、B、C和D四个选项中选出最佳选项。

AIt’s surprising how much simple movements of the body can affect the way we ing expansive gestures with open arms makes us feel more powerful,crossing your arms makes you more determined and lying down can bring more insights(领悟).So if moving the body can have these effects,what about the clothes we wear?We’re all well aware of how dressing up in different ways can make us feel more attractive,sporty or professional,depending on the clothes we wear,but can the clothes actually change cognitive(认知的)performance or is it just a feeling?Adam and Galinsky tested the effect of simply wearing a white lab coat on people’s powers of attention.The idea is that white coats are associated with scientists,who are in turn thought to have close attention to detail.What they found was that people wearing white coats performed better than those who weren’t.Indeed, they made only half as many errors as those wearing their own clothes on the StroopTest(one way of measuring attention).The researchers call the effect“enclothed cognition,”suggesting that all manner of different clothes probably affect our cognition in many different ways.This opens the way for all sorts of clothes-based experiments.Is the writer who wears a fedora more creative?Is the psychologist wearing little round glasses and smoking a cigar more insightful?Does a chef’s hat make the resultant food taste better?From now on I will only be editing articles for PsyBlog while wearing a white coat to help keep the typing error count low.Hopefully you will be doing your part by reading PsyBlog in a cap and gown(学位服).1.Adam and Galinsky’s experiment tested the effect of clothes on their wearers’___________.A.insightsB.attentionC.movementsD.appearance2.How does the author sound in the last paragraph?A.Humorous.B.Academic.C.Formal.D.Hopeful.3.What is the main idea of the text?A.Body movements change the way people think.B.How people dress has an influence on their feelings.C.People doing different jobs should wear different clothes.D.What people wear can affect their cognitive performance.BMy mother always said,"You young men should explore your own country before stepping out into the world."It seemed like a tough task.But luckily for me,Via Rail Canada offered youths between the ages of18and25the chance to ride the train across Canada for the month of July in2017.I jumped at the opportunity and secured an inexpensive ti cket.Excitement was at its peak as I approached the train station on the morning when my22-day adventure was to begin.I jumped on board the passenger vessel(车厢)like it was the train to Hogwarts in Harry Potter.The train headed west in search of our first destination—the scenic town of Banff,Alberta. After just an hour on the train,desperation already came on me.The thought of three full days on those tracks broke my spirits.As I gazed out towards Lake Superior's glistening(闪闪发亮)waves,I decided if I was to be stuck in here,I would need to enjoy my time.Those three days turned into a summer camp on rails.Real friendships with the crew were born within that train.Stops were made in small,remote railroad villages.A large group of strangers turned travelling companions would rush towards the villages to reward our endless patience with local cuisine.At night,we would walk to the glass-domed(玻璃穹顶)train car,which gave a scenic view of the night sky,untouched by light pollution.After three days,we arrived in Banff.Before my adventure of taking the train across Canada,if I could have skipped the travel and arrived at the destination,I would have.But that is no longer true.I'velearned that the journey can be more enjoyable than the destination.4.What made the author's train trip possible?A.The attraction of the splendid scenery.B.A time-limited ticket offer for youths.C.The encouragement from his mother.D.His determination to face the tough tasks.5.Which of the following best describes the author as a young man?A.Considerate.B.Determined.C.Smart.D.Adaptable.6.What has the author learned from his adventure?A.To enjoy travelling on his own.B.To skip to the final destination.C.To explore more in the process.D.To be content with train service.CLife expectancy in the United States has been in decline for the first time in decades,and public health officials have identified a series of potential causes,including inaccessible health care,rising drug addiction and rates of mental health disorders,and socio-economic factors.Now,a study led by the Yale School of Medicine has attempted to find out the relative impact of two factors most often linked to life expectancy–race and education–by looking at data about5,114black and white participants in four U.S. cities.The lives and deaths among this group of people–who took part in the study approximately30ye ars ago when they were in their early20s–show that the level of education,and not race,is the best predictor of who will live the longest.Among the5,114people followed in the study,395had died.These deaths were occurring in working-age people,often with children,before the age of60.The rates of death among participants in this group did clearly show racial differences,with approximately9%of blacks dying at an early age compared to6%of whites.There were also differences in causes of death by race.For instance,black men were significantly more likely to die of murder and white men from AIDS.The most common causes of death across all groups over time were cardiovascular disease and cancer.But there were also obvious differences in rates of death by education level.Approximately13%of participants with a high school degree or less education died compared with only approximately5%of college graduates.Strikingly,when looking at race and education at the same time,the researchers found that differencesrelated to race almost disappeared:13.5%of black subjects and13.2%of white subjects with a high school degree or less died during the course of the study.By contrast,5.9%of black subjects and4.3%of whites with college degrees had died.Therefore,improving overall quality of education is something tangible that can help reverse(扭转) this troubling trend in reduction of life expectancy among middle-aged adults.7.What can we learn about the participants in the study?A.The whites are more aggressive.B.The whites got higher education.C.More blacks than whites died young.D.More whites than blacks died of cancer.pared with education,the influence of race on death rates is______.A.unnoticeableB.growingC.long-lastingD.significant9.What does the underlined word“tangible”probably mean?A.Temporary.B.Realistic.C.Challenging.D.Creative.10.What can be inferred from the research findings？A.People can get smart through learning.B.One should not discriminate other races.C.One can live longer by getting more education.D.People don’t enjoy equal rights for education.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。

七校联合体2021届高三第一次联考试卷（8月）地理注意事项：1．答题前，考生务必用0.5毫米黑色签字笔将自己的姓名、座号、考生号等信息写在答题卡规定的位置上。

2．第I卷每小题选出答案后，用2B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。

写在试卷上无效。

3．第II卷必须用0.5毫米黑色签字笔作答，答案务必写在答题卡各题号指定区域内相应的位置；如需改动，先划掉原来的答案，然后再写上新的答案；不能使用涂改液、胶带纸、修正带。

不按以上要求作答的答案无效。

第I卷一、选择题：本题共20题，每小题3分，共60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。

“城镇收缩”指在城镇发展过程中，城市总人口不断萎缩的现象。

“中国林都”—黑龙江省伊春市以林业为主，产业结构单一，今年来出现了较为显著且持续发展的城镇收缩现象。

下图示意伊春市城镇发展不同阶段人口、经济和用地规模变化，图中外三角形数值大于内三角形数值。

读下图完成下面小题。

1. 伊春市“城镇收缩”的主要原因是（）A. 农村人口少B. 经济衰退C. 老龄化严重D. 气候寒冷2. 能正确反映伊春市“城镇收缩”先后顺序的是（）A. 甲丙乙B. 丙甲乙C. 乙甲丙D. 乙丙甲3. 与甲阶段相比，乙阶段内伊春市（）A. 交通拥堵加剧B. 土地集约度提高C. 人均产值增加D. 服务范围扩大【答案】1. B 2. B 3. C【解析】【分析】【1题详解】材料信息表明，“城镇收缩”指在城镇发展过程中，城市总人口不断萎缩的现象。

由此推断，伊春市“城镇收缩”的主要表现是城市人口减少，当地人口自然增长为正，那么城市人口减少应人口迁出所致。

如果当地农村人口少，只会导致城市人口增长速度较慢，不会导致城市人口数量减少，排除A；材料信息表明，伊春市以林业为主，产业结构单一，因此经济发展受阻，经济衰退，提供的就业机会少，大量城市人口向外迁移，导致城镇收缩，B符合题意；老龄化严重是当地“城镇收缩”的结果，不是原因，排除C；气候寒冷有可能使得部分人迁出，但一直以来，当地就具有冬季气候寒冷的特征，因此这不是当地伊春市“城镇收缩”的主要原因，排除D。

2021-2022学年广东省七校联合体高三（上）第一次联考数学试卷（8月份）一、单项选择题：本题共8道小题，每小题5分，共40分．在每小题给出的四个选项中，只有一项是符合题目要求的．1．已知集合A＝{x|x2＜4}，B＝{x|x＞0}，则A∩B＝（）A．{x|0＜x＜2}B．{x|x＞﹣2}C．{x|﹣2＜x≤0}D．{x|0＜x＜4} 2．已知复数z满足（1+i）z＝（1﹣i），则复数z的模|z|＝（）A．0B．1C．D．23．做志愿者参与社区服务是学生参加社会公益活动的主要途径．某个星期日有4名学生志愿者随机平均分配到A、B两个社区进行垃圾分类宣传活动，则其中甲乙两人都被分配到A社区的概率是（）A．B．C．D．4．二项式展开式中常数项是（）A．20B．﹣20C．D．5．函数f（x）＝•cos x的图像的大致形状是（）A．B．C．D．6．已知实数α，β，“α+β＝2kπ，k∈z''是''sin（α+β）（）A．充分而不必要条件B．必要而不充分条件C．充分必要条件D．既不充分也不必要条件7．故宫是世界上现存规模最大、保存最为完整的木质结构古建筑群．故宫宫殿房檐设计恰好使北房在冬至前后阳光满屋，夏至前后屋檐遮阴．已知北京地区夏至前后正午太阳高度角约为75°，冬至前后正午太阳高度角约为30°．图1是顶部近似为正四棱锥、底部近似为正四棱柱的宫殿，则其出檐AB的长度（单位：米）约为（）A．3B．4C．6（﹣1）D．3（+1）8．已知点P在直线x+y＝4上，过点P作圆O：x2+y2＝4的两条切线，切点分别为A，B，则点M（3，2）（）A．B．C．2D．二、多项选择题：本题共4小题，每小题5分，共20分。

在每小题给出的四个选项中，有多项符合题目要求.全部选对的得5分，部分选对的对2分，有选错的得0分。

9．已知函数，则（）A．f（x）是周期为π的周期函数B．f（x）的值域是[﹣1，1]C．f（x）在[0，]上单调递增D．将f（x）的图像向左平移个单位长度后，可得一个奇函数的图像10．设F1，F2分别是双曲线的左、右焦点，且|F1F2|＝8，则下列结论正确的是（）A．s＝8B．t的取值范围是（﹣8，8）C．F1到渐近线的距离随着t的增大而减小D．当t＝4时，C的实轴长是虚轴长的3倍11．已知两个不为零的实数x，y满足x＜y，则下列结论正确的是（）A．3|x﹣y|＞1B．xy＜y2C．x|x|＜y|y|D．12．英国数学家牛顿在17世纪给出了一种求方程近似根的方法﹣﹣牛顿迭代法，做法如下：如图，设r是f（x），选取x0作为r的初始近似值，过点（x0，f（x0））作曲线y＝f（x）的切线l：y﹣f（x0）＝f'（x0）（x﹣x0），则l与x轴的交点的横坐标，称x1是r的一次近似值；过点（x1，f（x1））作曲线y＝f（x）的切线，则该切线与x轴的交点的横坐标为x2，称x2是r的二次近似值；重复以上过程，得r的近似值序列，称x n+1是r的n+1次近似值，这种求方程f（x）＝0近似解的方法称为牛顿迭代法．若使用该方法求方程x2＝2的近似解，则（）A．若取初始近似值为1，则该方程解的二次近似值为B．若取初始近似值为2，则该方程解的二次近似值为C．D．三、填空题：本题共4小题，每小题5分，共20分.13．函数f（x）＝2x+cos x在点处的切线与两坐标轴围成的三角形面积是．14．试写出一个离心率为，焦点在y轴上的椭圆的标准方程．15．向量，，在边长为1的正方形网格中的位置如图所示，若为与，则（+）•＝．16．《九章算术》是我国古代数学名著，它在几何学中的研究比西方早一千多年，书中将四个面都为直角三角形的四面体称为鳖臑．在鳖臑ABCD的四个直角三角形中，且所有直角三角形斜边长分别为AD＝，BC＝，它的所有顶点都在球O的球面上，则球O的体积为．四、解答题：本题共6小题，共70分.解答应写出文字说明、证明过程或演算步骤. 17．在①a4＝2a2，②b3﹣b2＝4，③T3＝6这三个条件中任选一个，补充在下面的问题中，若问题中正整数k存在；若问题中的正整数k不存在，说明理由．问题：已知等差数列{a n}的前n项和为S n，各项为正的等比数列{b n}的前n项和为T n，T1＝2S1＝2，S3＝T2，且______．是否存在正整数k使T5≤2S k≤T6成立？18．在△ABC中，内角A，B，C的对边分别为a，b，c c sin B+b cos C，点D为AB边上一点，CD＝．（1）求B；（2）求△ABC的面积．19．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件产品旧设备9.810.310.010.29.99.810.010.110.29.7新设备10.110.410.110.010.110.310.610.510.410.5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s12和s22．（1）求，，s12，s22；（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﹣≥2，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）．20．如图，在四棱锥P﹣ABCD中，底面ABCD是平行四边形，AB＝1，BC＝4，M，N 分别为BC，PC的中点，PM⊥MD．（Ⅰ）证明：AB⊥PM；（Ⅱ）求直线AN与平面PDM所成角的正弦值．21．已知函数．（Ⅰ）若f（x）在（2，+∞）上有极值，求a的取值范围；（Ⅱ）求证：当﹣1＜a＜2时，过点P（0，﹣1）只有一条直线与f（x）22．如图所示，过抛物线y2＝4x的焦点F作互相垂直的直线l1，l2，l1交抛物线于A，B两点（A在x轴上方），l2交抛物线于C，D两点，交其准线于点N．（Ⅰ）设AB的中点为M，求证：MN垂直于y轴；（Ⅱ）若直线AN与x轴交于Q，求△AQB面积的最小值．。

七校联合体2024届高三第一次联考试卷（8月）物理科目（深圳宝安中学、中山一中、南海中学、仲元中学、潮阳一中、普宁二中、桂城中学）一、单选题（本大题共7小题，每小题4分，共28分）1．物理学是一门实验科学，也是一门崇尚理性、遵循逻辑推理的理论学科.下列有关原子、原子核的说法正确的是（）1向一个新台阶，如图所示，轨道1是圆轨道，轨道2是椭圆轨道，轨道3是近火圆轨道，天问一号经过变轨成功进入近火圆轨道3，已知引力常量G，以下选项中正确的是（）A．天问一号在B点需要点火加速才能从轨道2进入轨道3B．天问一号在轨道2上经过B点时的加速度大于在轨道3上经过B点时的加速度C．天问一号进入近火轨道3后，测出其近火环绕周期T，可计算出火星的平均密度D．天问一号进入近火轨道3后，测出其近火环绕周期T，可计算出火星的质量5．如图所示，一对等量异号点电荷分别固定在正方体的c、d两个顶点上，a、b是正方体的另外两个顶点，一带正电的粒子仅在电场力的作用下，以一定的初速度从a点运动到b点的轨迹如图中虚线所示，则下列说法中正确的是（）A．c点固定的是负电荷B．a、b两点的电势相等C．带电粒子在a点和b点的加速度相同D．带电粒子的动量先增加后减小6．如图所示，有一长为L的轻绳，一端系在固定在O点的拉力传感器上，另一端栓一质量为m的小球，让小球能够在竖直平面内做完整的圆周运动，测出小球在最低点时细绳拉力大小与小球在最高点时细绳拉力大小之差为∆大小与v2的关系正确的是（）∆，同时也测出小球在最高点时速度大小为v，已知重力加速度为g，则FFA．B．C．D．二、多选题（本大题共3小题，每小题6分，共18分，漏选得3分，多选不得分）8．将某均匀的长方体锯成如图所示的A、B两块后，放在水平桌面上并排放在一起，现用水平力F垂直于B的左边推B物体，使A、B整体仍保持矩形沿F方向匀速运动，则()A．物体A在水平方向上受三个力的作用，且合力为零B．物体A在水平方向上受两个力的作用，且合力为零C．B对A的作用力方向与F方向相同D．B对A的弹力等于桌面对A的摩擦力9．如图物体A、B通过细绳及轻质弹簧连接在轻滑轮两侧，物体A、B的质量分别为2m、m，开始时细绳伸直，用手托着物体A使弹簧处于原长且A与地面的距离为h，物体B静止在地面上，放手后物体A下落，与地面即将接触时速度大小为v，此时物体B对地面恰好无压力，不计一切摩擦及空气阻力，重力加速度大小为g，则下11．某同学利用如图所示的装置测量滑块P与水平桌面间的动摩擦因素。