天津市滨海新区塘沽一中2020届高三第一次月考
天津市滨海新区塘沽第一中学2024-2025学年高三上学期第一次月考数学试卷
天津市滨海新区塘沽第一中学2024-2025学年高三上学期第一次月考数学试卷一、单选题1．已知集合{}R 13P x x =∈≤≤，{}2R 4Q x x =∈≥，则()R P Q =U ð（ ）A ．{}2x x >B ．{}23x x -<≤C ．{}12x x ≤<D ．{}21x x x ≤-≥或2．设x ∈R ，则“1x <”是“ln 0x <”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3．函数y =2sin 2x x 的图象可能是A ．B ．C ．D ．4．已知角α的顶点为坐标原点，始边与x 轴的非负半轴重合，终边上有两点()1A a ，，()2B b ，，且2cos23α=，则a b -=A ．15B C D ．15．某校为了了解学生的课外阅读情况，随机调查了50名学生，得到他们在某一天各自课外阅读所用时间的数据，结果用下面的条形图表示．根据条形图可得这50名学生这一天平均每人的课外阅读时间为（ ）A ．0.6小时B ．0.9小时C ．1.0小时D ．1.5小时6．已知()1e ,1x -∈，记ln ln 1ln ,,e 2⎛⎫=== ⎪⎝⎭xx a x b c ，则,,a b c 的大小关系是（ ）A ．a c b <<B ．a b c <<C ．c b a <<D ．b c a <<7．等差数列 a n 的前n 项和为n S ，其中77S =，又2，1b ，2b ，3b ，8成等比数列，则2352b a a +的值是（ ） A ．4B ．4-C ．4或4-D ．28．已知函数()sin()f x A x B ωϕ=++(0,0,)2A πωϕ>><的部分图象如图所示，则下列正确个数有（ ）①()f x 关于点π(,3)6对称；②()f x 关于直线π3x =对称； ③()f x 在区间π5π[,]26上单调递减；④()f x 在区间5ππ(,)1212-上的值域为(1,3)． A ．1个B ．2个C ．3个D ．4个9．如图，在ABC V 中，π3BAC ∠=，2AD DB =u u ur u u u r ，P 为CD 上一点，且满足13AP mAC AB =+u u u r u u u r u u u r，若4AB AC ⋅=u u u r u u u r，则AP u u u r 的最小值为（ ）A ．2B ．3 CD ．32二、填空题10．已知i 是虚数单位，化简113i12i+-的结果为． 11．8⎛⎫的展开式中22x y 的系数为. 12．已知13a <<，则131a a a +--的最小值是. 13．甲罐中有4个红球、2个白球和2个黑球，乙罐中有4个红球、3个白球和2个黑球．先从甲罐中随机取出一球放入乙罐，再从乙罐中随机取出一球．以1A 表示由甲罐取出的球是红球的事件，以M 表示由乙罐取出的球是红球的事件，则()1P M A =；()P M =． 14．在梯形ABCD 中，AB CD ∥，且3AB C D =，M ，N 分别为线段DC 和AB 的中点，若AB a u u u r r=，AD b u u u r r =，用a r ，b r 表示MN =u u u u r .若MN BC ⊥u u u u r u u u r，则DAB ∠余弦值的最小值为.15．函数(){}2min 2,,2f x x x x =-+，其中{}min ,,x y z 表示x ，y ，z 中的最小者.若函数22()2()9y f x bf x b =-+-有12个零点，则b 的取值范围是.三、解答题16．ABC V 的内角A ，B ，C 的对边分别为a ，b ，c ，已知cos cos tan b C c B C +=. (1)求角C ；(2)若4b a =，ABC V 的面积为①求c②求()cos 2A C -.17．已知函数()4tan sin cos ππ23f x x x x ⎛⎫⎛⎫=-- ⎪ ⎪⎝⎭⎝⎭(1)求()f x 的定义域与最小正周期；(2)讨论()f x 在区间ππ,44⎡⎤-⎢⎥⎣⎦上的单调性.(3)若()065f x =，0π5π,122x ⎡⎤∈⎢⎥⎣⎦，求0sin2x 的值.18．在四棱锥P ABCD -中，PD ⊥平面ABCD ，//AB DC ，AB AD ⊥，112CD AD AB ===，45PAD ∠=o ，E 是PA 的中点，G 在线段AB 上，且满足CG BD ⊥.(1)求证：//DE 平面PBC ；(2)求平面GPC 与平面PBC 夹角的余弦值.(3)在线段PA 上是否存在点H ，使得GH 与平面PGCAH 的长；若不存在，请说明理由.19．已知数列{}n a 的前n 项和为n S ，满足21n n S a =-，*n ∈N .数列{}n b 满足()()111n n nb n b n n +-+=+，*n ∈N ，且11b =.(1)证明数列n b n ⎧⎫⎨⎬⎩⎭为等差数列，并求数列{}n a 和{}n b 的通项公式；(2)若21n n d a -=数列{}n d 的前n 项和为n M ，对任意的*n ∈N ，都有22n3n n M S a >+，求实数a 的取值范围； (3)记11m m c a -=，{}m c 的前m 项和记为m T，是否存在m ，*N t ∈，使得111m m t T t T t c +-=-+成立？若存在，求出m ，t 的值；若不存在，请说明理由.20．已知函数()2e cos222xf x x x x =+++-.()()2ln 2g x a x x a x =+-+，其中R a ∈.(1)求()f x 在0x =处的切线方程，并判断()f x 零点个数. (2)讨论函数()g x 的单调性；(3)求证：()()ln 21f x x ≥+；。
2020届天津市塘沽区第一中学高三英语月考试题及参考答案
2020届天津市塘沽区第一中学高三英语月考试题及参考答案第一部分阅读（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A、B、C、D四个选项中选出最佳选项ASongkran, ThailandThis festival marks the Thai New Year, which is celebrated in the second week of April. This is the hottest time of the year in Thailand, so it makes sense that the biggest Songkran tradition is to throw water on people. Thais of all ages join in water fights, using buckets, hoses (软管)and water guns to celebrate the event.Boryeong Mud Festival, South KoreaDon't expect to come home clean after experiencing the Boryeong Mud Festival in South Korea. Famous for its mineral-rich mudflats, visitors rush to Boryeong in July to make themselves in mud, swim in grey pools and enjoy the party. There are even mudslides and a mud skiing competition for those who are seeking the extreme mud adventure!La Tomatina, SpainThe festival dates back to a parade in which some naughty teenagers knocked one performer off his stilts (高跷)and caused a fight of throwing vegetables accidentally. It was once banned until 1957 when the locals held a protest with a funeral. They carried a coffin containing a huge tomato as bands played a funeral march. In the following decades, La Tomatina has become a popular event. If you join the event, be aware that you squash (压扁) the tomato before throwing it. Have a great time but avoid causing any injury.Dia de los Muertos, MexicoBeginning at the midnight of October 31 and lasting through November 2,it is a festival when families gather together to remember those loved ones who have died, aiming to help them on their spiritual journey. On these days, Mexican families prepare special tables in their homes. On top of them they'll put photos of the dead and their favorite food. They also visit the graves of their beloved ones to show their respect to the dead.1.If you want to experience a special new year in a country, you can choose to visit ________.A.ThailandB.South KoreaC.SpainD.Mexico2.What may happen to you as a visitor in La Tomatina?A.You can perform stilts.B.Your can play funeral music in bands.C.You may be covered with mud.D.You may be attacked with tomatoes.3.Which festival is similar to the Tomb Sweeping Festival in China?A.Songkran.B.Boryeong Mud Festival. Tomatina.D.Dia de los Muertos.BPaper is an important part of modern life. People use it in school, at work, to make artwork and books, to wrap presents and much more. Trees are the most common material for paper these days.So how do people make paper out of trees today? People first cut trees, load them onto trucks and bring them to a factory. Machines cut open the outer coverings of the trees, and cut the trees into pieces. Those pieces are boiled into a soup. After that, it is hit flat, dried and cut up into sheets of paper.The entire process, from planting a small tree to buying your school notebook, takes a very long time. Just growing the trees takes 10 to 20 years.Making tons of paper from trees can harm the planet. Humans cut down 80, 000 to 160,000 trees around the world every day, and use many of them to make paper. Some of those trees come from tree farms. But people also cut down forests for paper, which means that animals and birds lose their homes.Cutting forests down also contributes to climate change, and paper factories pollute the air. After you throw paper, it often takes the paper six to nine years to break down. That's why recycling is important. It saves a lot of trees, slows climate change and helps protect endangered animals, birds and all creatures that rely on forests for their homes and food.So if paper isn't good for the environment, why don't people write on something else?The answer: They do. With computers, tablets and cellphones, people use much less paper than in the past. Maybe a day will come when we won't use paper at all — or will save it for very special books and artworks.4. What can we know about making paper out of trees?A. It costs much money.B. It takes a lot of time.C. It is very easy and fast.D. It is dangerous and difficult.5. What is the impact of paper production?A. It promotes the recycling.B. It does harm to the environment.C. It slows down the climate change.D. It protects the animals from losing homes.6. How will we use paper someday in the future according to the text?A. Use it for books only.B. Use the recycled paper.C. Treasure it occasionally.D. Use it for artworks.7. What idea does the author want to express from the text?A. The influence of making paper on environment.B. The wonderful experience of making paper.C. The necessary process of making paper.D. The good reasons for making paper.CPopularization has in some cases changed the original meaning of emotional (情感的) intelligence. Many people now misunderstand emotional intelligence as almost everything desirable in a person's makeup that cannotbe measured by an IQ test, such as character, motivation, confidence, mental stability, optimism and “people skills.” Research has shown that emotional skills may contribute to some of these qualities, but most of them move far beyond skill-based emotional intelligence.We prefer to describe emotional intelligence as a specific set of skills that can be used for either good or bad purposes. The ability to accurately understand how others are feeling may be used by a doctor to find how best to help her patients, while a cheater might use it to control potential victims. Being emotionally intelligent does not necessarily make one a moral person.Although popular beliefs regarding emotional intelligence run far ahead of what research can reasonably support, the overall effects of the publicity have been more beneficial than harmful. The most positive aspect of this popularization is a new and much needed emphasis (重视) on emotion by employers, educators and others interested in promoting social well-being. The popularization of emotional intelligence has helped both the public and researchers re-evaluate the functionality of emotions and how they serve people adaptively in everyday life.Although the continuing popular appeal of emotional intelligence is desirable, we hope that such attention will excite a greater interest in the scientific and scholarly study of emotion. It is our hope that in coming decades, advances in science will offer new perspectives (视角) from which to study how people manage their lives. Emotional intelligence, with its focus on both head and heart, may serve to point us in the right direction.8. What is a common misunderstanding of emotional intelligence?A. It can be measured by anIQ test.B. It helps to exercise a person’s mind.C. It includes a set of emotional skills.D. It refers to a person’s positive qualities.9. Why does the author mention “doctor” and “cheater” in paragraph 2?A. To explain a rule.B. To clarify a concept.C. To present a fact.D. To make a prediction.10. What is the author’s attitude to the popularization of emotional intelligence?A. Favorable.B. Intolerant.C. Doubtful.D. Unclear.11. What does the last paragraph mainly talk about concerning emotional intelligence?A. Its appeal to the public.B. Expectations for future studies.C. Its practical application.D. Scientists with new perspectives.DWhen I was 9, we packed up our home in Los Angeles and arrived atHeathrow, London on a gray January morning. Everyone in the family settled quickly into the city except me. Without my beloved beaches and endless blue—sky days, I felt at a loss and out of place. Until I made a discovery.Southbank, at an eastern bend in the Thames, is the center of British skateboarding, where the continuous crashing of skateboards left your head ringing .I loved it. I soon made friends with the local skaters. We spoke our own language. And my favorite: Safe. Safe meant cool. It meant hello. It meant don't worry about it. Once, when trying a certain trick on the beam（横杆）, I fell onto the stones, damaging a nerve in my hand, and Toby came over, helping me up: Safe, man. Safe. A few minutes later, when I landed the trick, my friends beat their boards loud, shouting: “Safe! Safe! Safe!” And that's what mattered—landing tricks, being a good skater.When I was 15, my family moved to Washington. I tried skateboarding there, but the locals were far less welcoming. Within a couple of years, I'd given it up.When I returned to London in 2004, I found myself wandering down to Southbank, spending hours there. I've traveled back several times since, most recently this past spring. The day was cold but clear: tourists and Londoners stopped to watch theskaters. Weaving（穿梭）among the kids who rushed by on their boards, I found my way to the beam. Then a rail—thin teenager, in a baggy white T—shirt, skidded（滑）up to the beam. He sat next to me. He seemed not to notice the man next to him. But soon I caughta few of his glances. “I was a local here 20 years ago,” I told him. Then, slowly, he began to nod his head. “Safe, man. Safe.”“Yeah,” I said. “Safe.”12. What can we learn about the author soon after he moved to London?A. He felt disappointed.B. He gave up his hobby.C. He liked the weather there.D. He had disagreements with his family.13. What do the underlined words “Safe! Safe! Safe!” probably mean?A. Be careful!B. Well done!C. No way!D. Don't worry!14. Why did the author like to spend time in Southbank when he returned to London?A. To join the skateboarding.B. To make new friends.C. To learn more tricks.D. To relive his childhood days15. What message does the author seem to convey in the text?A. Children should learn a second language.B. Sport is necessary for children's health.C. Children need a sense of belongingD. Seeing the world is a must for children.第二节（共5小题；每小题2分，满分10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。
2020-2021学年天津市塘沽区第一中学高三英语月考试卷及参考答案
2020-2021学年天津市塘沽区第一中学高三英语月考试卷及参考答案第一部分阅读（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A、B、C、D四个选项中选出最佳选项ATheatre reflects the values of the civilization out of which it grows. The following are the types of theatre performances an ancient Roman might have witnessed then.Fescennine VerseFescennine Verse was a pioneer of Roman comedy. Ironic and improvisational（即兴的）, it was used mainly at festivals or weddings, and as invective. With early native Italian funny dialogues in Latin verse, it was thought to have combined with a tradition of performances by masked dancers and musicians from Etruria.Fabula AtellanaFabula Atellana relied on common characters, masks, direct humor, and simple plots. They were performed by actors improvising. Fabula Atellana came from the Oscan city of Atella. There were 4 main types of characters: the braggart, the greedy blockhead, the clever hunchback and the stupid old man, like modern Punch and Judy shows.Fabula TogataNamed for the clothing symbolic of the Roman people Fabula Togata had various subtypes. One was the Fabula Tabernaria, named for the tavern（酒馆）where the comedy’s preferred characters, lowlifes, might be found. One describing more middle-class types, and continuing the Roman clothing theme, was the Fabula Trabeata.Fabula PraetextaFabula Praetexta is the name for Roman tragedies on Roman themes, Roman history or current politics. Fabula Praetexta was less popular than tragedies on Greek themes. During the Golden Age of drama in the Middle Republic, there were four great Roman writers of tragedy, Naevius, Ennius, Pacuvius, and Accius. Of their surviving tragedies, 90 titles remain.All the performances above began as a translation of Greek forms, even to the extent of their being performed in Greek costume.1.Where might an ancient Roman witness Fescennine Verse?A.At a party.B.At a funeral.C.At a wedding.D.At a concert.2.Which type of performance describes the middle-class life?A.Fabula Atellana.B.Fabula Tabernaria.C.Fabula Trabeata.D.Fabula Praetexta.3.What do the listed types of performances have in common?A.They copy Latin dramas.B.They take on Greek forms.C.They reflect Roman themes.D.They refer to Italian stories.BDisease-carrying mosquitoes can spread diseases without affecting themselves. Nearly 700 million people get a mosquito-borne illness each year, which results in over one million deaths. Humans experience continuous pressures from disease-carrying mosquitoes in many parts of the world, so we have to find ways to fight against those insects because they keep getting scarier.Even though DEET remains the most commonly used, and most powerful, mosquito repellent ever developed, scientists are actively pursuing effective products based entirely on plant oils. While DEET is an effective contact repellent, many people dislike the oily feel and smell on their skin, and sometimes some people are sensitive to it. Consumers are always interested in alternatives to DEET and other synthetic repellents, so there are numerous natural repellents on the market.In his lab atIowaStateUniversity, Dr. Joel Coats and his team have successfully tested these repellents against three species of dangerous mosquitoes. The first group of the new repellents act through the air. These chemicals have a vapor action that provides protection, and they are called “spatial” repellents, since they act through space. These are potentially most useful in backyards, parks, and houses. The other group are the classic ones that stop insects from standing on a treated surface, such as human skin, clothing or tents; collaborators at the USDA-ARS and BioGents have conducted testing with humans to confirm the effectiveness and identify the very best ones.The new repellents were designed and made from the natural materials in plant essential oils. They maintain many of the advantages of the natural repellents: They are fully biodegradable, with no ecological concerns or environmental wastes, and generally considered safe like the thousands of types of plant essential oils used in the flavor and perfume industries. However, thorough testing will be conducted to determine if they are truly non-poisonous because there is still no enough evidence.4. What does the author mainly want to show in paragraph 1?A. The way mosquitoes spread disease.B. The high death rate of mosquito-borne illness.C. The difficulty of fighting disease-carrying mosquitoes.D. The urgency of finding tools to fight against mosquitoes.5. What is a disadvantage of DEET?A. It won’t be effective for long.B. It can’t be applied universally.C. It causes discomfort to the users.D. It greatly harms people’s health.6. What can we learn about the second group of the new repellents?A. They can kill mosquitoes indirectly.B. They are mainly used in the open air.C. They are more effective on human skin.D. They can prevent mosquitoes from contacting users.7. What’s the author’s attitude to the new repellents?A. Subjective.B. Objective.C. Doubtful.D. Disapproving.CWhen Alex Linwas 11 years old, he read an alarming article in the newspaper, which said that people were burying old computers in backyards, throwing TVs into streams, and dumping (丢弃) cell phones in the garbage. This was dangerous because e-waste contains harmful chemicals that can leak into the environment, getting into crops, animals, water supplies and people.Alex was really worried and decided to make it next project for WIN-the Westerly Innovations Network. Alex and six of his friends had formed this organization to help solve community problems two years before.But what could they do about this project with e-waste? The team spent several weeks gathering information about the harmful chemicals in e-waste and their effects on humans. They learned how to dispose(处置) of e-waste properly and how it could be recycled. Then, they sent out a Survey and found only one in eight know what e-waste was, let alone how to properly dispose of it.Alex and his friends went into action. They advertised in the local newspaper and distributed notices to students, asking residents to bring their unwanted electronics to the school parking lot. The drive lasted two days, and they collected over 9, 500 kilograms of e-waste. The next step was to set up a long-term e-waste drop-off center for the town. After some research, they’d learned that reusing is the best way to deal with electronic devices and it is seven times more efficient than recycling. So, they began learning to retrofit (翻新) computers themselves and distributed them to students who didn’t have their own. In this way, they could help students inthe area and protect the environment at the same time.For a lasting solution to e-waste, the drop-off center wasn’t enough. Lawswould have to be passed. In 2016, WIN helped push for an e-waste bill in their town, which required companies that manufactured or sold electronics to take back e-waste. The bill clearly forbids the dumping of e-waste. Because of the work of WIN, more and more people, like Alex and his team, are getting the message about safe disposal of e-waste. As Alex says, “Today’s technology should not become tomorrow’s harmful garbage.”8. What was Alex’s worry after he read the article?A. The littering of e-waste.B. The recycling of plastic.C. The change of environment.D. At 11 p.m. on Monday.9. What did Alex do to start the project?A. Set up WIN.B. Collect information.C. Ask friends for help.D. The overuse of old computer.10. Which can best describe the way Alex and his team did their work?A. Traditional.B. Competitive.C. Scientific.D. Convenient.11. What message does the story convey?A. There is no end to perfection.B. success comes through failure.C. Every positive attitude has a reward.D. young people can make a big difference.DEarthquake can disrupt whales’ hunting for food for up to a year,according to a new study.On November 14, 2016, the Kaikoura earthquake struck New Zealand’s South Island, causing a destructive tsunami. Under the surface, the earthquake caused strong currents that swept away and mostly killed off diverse ecosystems of creatures living along the Kaikoura underwater canyon.As a result, whales had to dive deeper and longer to find food—“a major shift” in their behavior, says co-author Liz Slooten, a marine biologist at the University of Otago in New Zealand.The impact earthquakes have on land animals has been well documented, but scientists know ly little about what happens underwater. Such research is important for government agencies, which may need to take recent earthquakes into consideration when considering fishing quotas（限额）, notes Rochelle Constantine, a marine mammal ecologist at the University of Auckland.The canyon’s upper reaches are rich in creatures, supplying food for the fish that make up the whales’ diet. So when these smaller life forms were washed away, it had “severe consequences for the community around there”,says study co-author Will Rayment. “That effect flowed all the way through the food chain.”As part of their ongoing study, the scientists were tracking 42 individual whales. After the earthquake, in all, the team managed to record data on 40 whales, showing that the abundance of whales in the general area didn’t change after the earthquake. However, the whales changed how they used their habitat.A year after the earthquake, the researchers observed the whales returning to their previous surface-breathing intervals. This could have been because the communities of animals that make up the whales’ food began to recover. “It gives you an idea of how resilient（有复原力的）these deep-sea communities are,” says Rayment.But he and his colleagues will continue long-term monitoring to see if there are effects they missed. Whale activity in the area had already been declining, though it’s unknown whether it is due to natural changes in food abundance, whale-watching tourism, fishing, or warming ocean temperatures. “There is something going on in Kaikoura,” says Rayment.12. What happened after the Kaikoura earthquake in the Kaikoura canyon?A. Several destructive tsunamis struck the area.B. Whales had to swim to other oceans to find food.C. Nearly all marine creatures in Kaikoura were killed off.D. Strong currents washed away many smaller creatures.13. Which is one of the findings of the study?A. Earthquakes can make it easier for whales to find food.B. The whales changed their habitat after the earthquake.C. It usually takes whales a year to adapt to their new diet.D. The number of whales in the area dropped sharply after the quake.14. What does Rochelle Constantine think of the study?A. It can help government agencies to make some decisions about fishing.B. It can help government agencies to solve problems in the fishing industry.C. It is a breakthrough in research on what happens underwater after an earthquake.D. It offers a detailed description of the impact earthquake have on marine mammals.15. What can we infer from the last paragraph?A. Something is affecting the whale activity in Kaikoura.B. Fishing quotas have been increasing in recent years.C. The team missed some effects in the research process.D. The scientists will continue studying earthquakes.第二节（共5小题；每小题2分，满分10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。
2020-2021学年天津市塘沽区第一中学高三语文一模试题及参考答案
2020-2021学年天津市塘沽区第一中学高三语文一模试题及参考答案一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成下面小题。
珍珠翡翠白玉汤蔡兴荣牛掌柜看着稀稀落落的客人，轻轻叹了口气。
珍珠食铺，开了近十年，生意和小溪里的水一样，平平淡淡。
牛掌柜出身贫穷，人善良，开了食铺，常常想起小时候搜肠刮肚，四处找食的日子。
开张之日，牛掌柜就定了一个规矩，只要贫穷没饭吃的人进店，免费供应一菜一饭。
这可是衢州城独一家的事。
新食铺开张，客人多，僧道、艺人、乞丐免费吃的也多，只能赚一点儿辛苦钱了。
牛夫人不乐意了，打起了退堂鼓。
牛掌柜依然乐呵呵的。
人都是有良心要脸面的，绝大多数免费吃饭的人都是偶尔路过来应个急，也有断断续续来的，唯独有一个道人，却是每晚必到。
牛夫人有了想法，脸上就挂不住了，上菜的盘子出了声响，牛掌柜看在眼里，自己亲自上菜。
客人少的时候，他还会请道人喝一杯。
道人须发飘飘，眉毛花白，无论别人什么眼神，他都不以为意，吃完就走，连谢谢二字也绝口不提。
牛掌柜从来不多问。
一年后，道人忽然来和牛掌柜辞别，说要云游去了。
牛掌柜有一点儿意外:“是我有招待不周吗？”道人抚着掌柜的背，哈哈大笑:“我观察一年了，你生意不好，做善事却从不间断，心地纯厚，内外如一，你是真善人哪！”一周后，珍珠食铺推出新珍珠翡翠白玉汤。
名声很快传出来，新客加老客，队就排到了街上。
食客的队伍招引了外地人品尝，珍珠食铺成了全城最旺的食铺。
一个青瓷的圆盘，豆腐如白玉柔和，菠菜翠绿如扇状铺开，白米如珍珠圆润飘浮，中间是菠菜的红根，做成昂立的孔雀来，整个造型就像孔雀开屏。
白绿红三色，清清爽爽，赏心悦目。
这道菜，豆腐细腻润滑，菠菜清脆爽口，最绝的是鲜，如琼浆玉汁，品尝之后无法忘怀。
一个月后，更离奇的事发生了。
一个官吏的母亲，眼睛昏花，第一次吃这道菜，赞不绝口，之后每周都要来两次。
一个月下来，老太太的眼睛竟然明亮了，她四处传颂。
一位有文化的老者，多年的老寒腿，走路不利索，每周必吃，拐杖竟然丢开了，欢天喜地。
2020年天津市塘沽区第一中学高三生物月考试题及参考答案
2020年天津市塘沽区第一中学高三生物月考试题及参考答案一、选择题：本题共15小题，每小题2分，共30分。
每小题只有一个选项符合题目要求。
1.关于人体三道防线的叙述中正确的是（）A.吞噬细胞只在非特异免疫中发挥作用B.机体的自身组织和细胞不可能成为抗原C.第三道防线是特异性免疫D.第二道防线的杀菌物质是指抗体2.接种乙肝疫苗后一般需要间隔1个月、6个月再次注射第二针和第三针，连续接种的主要目的是A. 疫苗被浆细胞特异性识别，产生大量的抗体B. 疫苗刺激T细胞产生大量淋巴因子C. 二次免疫刺激机体产生大量淋巴细胞和抗体D. 增强体液中的吞噬细胞、溶菌酶对病原体的杀伤力3.由COVID-19病毒引发的疾病至今仍在全球肆虐，对人类健康和全球经济、社会发展造成了极大的破坏。
COVID-19病毒表面的刺突糖蛋白与人体细胞膜表面的ACE2（血管紧张素转化酶2）有极强的结合力，是病毒锚定侵入细胞的关键。
该病毒可以攻击人体的肺泡、心脏、血管、肾脏及中枢神经等部位，严重影响患者的健康。
下列说法错误的是（）A.人体内不同细胞的形态和结构存在差异，但其DNA上都存在编码ACE2的基因B.病毒通过识别ACE2入侵细胞，体现了细胞间可以通过直接接触进行信息交流C.ACE2的合成过程需要核糖体、内质网、高尔基体等结构的参与才能完成D.宿主细胞的溶酶体能够将侵入的COVID-19病毒吞噬、分解，分解产物被排出细胞或再利用4.若用32P标记某干细胞的一个DNA分子双链，然后在不含32P的培养液中培养，在第五次细胞分裂结束后被32P标记的细胞个数和染色体条数分别是（）A.1个1条B.2个2条C.2个4条D.32个32条5.甲病和乙病均为单基因遗传病，某家族遗传家系图如图，其中Ⅱ4不携带甲病的致病基因。
下列叙述不正确的是（）A.甲病为伴X染色体隐性遗传病，乙病为常染色体隐性遗传病B.若Ⅱ2的性染色体组成为XXY，则可能是其母亲减数第一次分裂时X、X染色体未正常分离C.Ⅱ3与Ⅱ4的后代中理论上共有8种基因型D.Ⅱ1与Ⅱ2生一个正常儿子的概率3/166.如图甲表示人体内免疫细胞的起源和分化，图乙表示一正常人注射疫苗以及再次接触抗原后体内产生抗体的反应。
2019-2020学年天津塘沽区第一中学高三数学文月考试题含解析
2019-2020学年天津塘沽区第一中学高三数学文月考试题含解析一、选择题：本大题共10小题，每小题5分，共50分。
在每小题给出的四个选项中，只有是一个符合题目要求的1. 在区间上随机地取两个数x、y,则事件“”发生的概率为A. B. C. D.参考答案：D2. 设复数z=1+i（i是虚数单位），则+z2=( )A．1+i B．1﹣i C．﹣1﹣i D．﹣1+i参考答案：A【考点】复数代数形式的乘除运算．【专题】数系的扩充和复数．【分析】利用复数的运算法则、共轭复数的定义即可得出．【解答】解：∵复数z=1+i，∴z2=2i，则+z2===1﹣i+2i=1+i，故选：A．【点评】本题考查了复数的运算法则、共轭复数的定义，属于基础题，3. 不等式|x﹣5|+|x+3|≥10的解集是（）A．[﹣5，7] B．[﹣4，6] C．（﹣∞，﹣5]∪[7，+∞）D．（﹣∞，﹣4]∪[6，+∞）参考答案：D考点：绝对值不等式的解法．专题：集合．分析：解法一：利用特值法我们可以用排除法解答本题，分别取x=0，x=﹣4根据满足条件的答案可能正确，不满足条件的答案一定错误，易得到答案．解法二：我们利用零点分段法，我们分类讨论三种情况下不等式的解，最后将三种情况下x的取值范围并起来，即可得到答案．解：法一：当x=0时，|x﹣5|+|x+3|=8≥10不成立可排除A，B当x=﹣4时，|x﹣5|+|x+3|=10≥10成立可排除C故选D法二：当x＜﹣3时不等式|x﹣5|+|x+3|≥10可化为：﹣（x﹣5）﹣（x+3）≥10解得：x≤﹣4当﹣3≤x≤5时不等式|x﹣5|+|x+3|≥10可化为：﹣（x﹣5）+（x+3）=8≥10恒不成立当x＞5时不等式|x﹣5|+|x+3|≥10可化为：（x﹣5）+（x+3）≥10解得：x≥6故不等式|x﹣5|+|x+3|≥10解集为：（﹣∞，﹣4]∪[6，+∞）故选D【点评】本题考查的知识点是绝对值不等式的解法，其中利用零点分段法进行分类讨论，将绝对值不等式转化为整式不等式是解答本题的关键．4. 定义在R上的函数在（－∞，2）上是增函数，且的图象关于轴对称，则A. B. C. D.参考答案：A函数的图象关于轴对称，则关于直线对称，函数在上是增函数，所以在上是减函数，所以，选A.5. 曲线在x=e处的切线方程为（）A．y=x B．y=e C．y=ex D．y=ex+1参考答案：B【考点】利用导数研究曲线上某点切线方程．【分析】欲求在x=e处的切线方程，只须求出其斜率的值即可，故先利用导数求出在x=e 处的导函数值，再结合导数的几何意义即可求出切线的斜率．从而问题解决．【解答】解：，∴，故选B．6. 设，，，则a，b，c的大小关系是（）A. B.C. D.参考答案：B【分析】利用指数函数与对数函数的单调性，进行大小比较，从而得出相应答案。
天津市滨海新区塘沽第一中学2024届高三上学期第一次月考数学复习卷3
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天津市滨海新区塘沽第一中学2024届高三上学期第一次月考数学复习卷4
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天津市第一中学2020届高三语文上学期第一次月考试题PDF
天津一中2019-2020-1高三年级语文学科一月考质量调查试卷本试卷分第I 卷（选择题）和第II 卷（非选择题）两部分，共150分，考试时间150分钟。
考生务必将答案涂写在答题卡的规定位置上，答在试卷上的无效。
祝各位考生考试顺利!第Ⅰ卷（39分）一、语言文字运用（共24分，每小题3分）1.阅读下面的文字，完成题目①黄狗为了表示同主人的意见一致，也便在翠翠身边汪汪汪的吠着。
其余的商人皆笑着，一时不能走路。
祖父气嘘嘘．．．的赶来了，把钱强迫．．塞到那个人手里。
②洋先生不准他革命，他再没有别的路；从此决不能望有白盔白甲的人来叫他，他所有的抱负．．，志向，希望，前程，全被一笔勾销．．．．了。
至于闲人们传扬开去，给小D 王胡等辈笑话，倒是还在其次的事。
③古老的教堂和卡西莫多之间有种心电感应，相互吸引，意气相投．．．．，外表相像，使得他紧紧黏附于它，就像乌龟黏附在甲壳．．上一样，那凹凸不平的教堂正是他的甲壳。
④黛玉忙拦道：“这宝姐姐也忒胶柱鼓瑟．．．．，矫糅造作．．．．了。
这两首虽于史鉴上无考，咱们虽不曾看这些外传，不知底里，难道咱们连两本戏也没见过不成！”文中加点字的字音、字形及语段出处文常，全部正确的一项是（）A.气嘘嘘强．迫（qiǎng ）沈从文《边城》B.抱负一笔勾销鲁迅《阿Q 正传》C.甲壳．（qiào ）意气相投巴尔扎克《高老头》D.胶柱鼓瑟矫糅造作曹雪芹《红楼梦》2.下列加点字的注音全部正确的一项是（）A.休憩．（qì）蓦．然（mù）不更．事（gēng ）退避三舍．（shè）B.翕．张（xī）内讧．（hòng ）拧．毛巾（níng ）不稂．不莠（láng ）C.狡黠．（xié）噱．头（xué）冠．心病（guàn ）情不自禁．（jīn ）D.谙．熟（àn ）木讷．（nè）独角．戏（jiǎo ）钻．木取火（zuàn ）3.下列词语中没有错别字的一项是（）A.题纲发祥地别出心裁大海里捞针B.渎职敲竹杠步履为艰快刀斩乱麻C.忖度破天荒声名雀起人不可貌相D.幅员开倒车察言观色礼轻情意重4.下列词语中，字形和加点字的字音全部正确的一项是（）A.轻歌曼舞一年之季在于春拙．劣（zhuó）力能扛．鼎（gāng）B.雍荣典雅百炼钢化为绕指柔打烊．（yáng）寅吃卯．粮（mǎo）C.毋庸赘言流水不腐，户枢不蠹果脯．（fǔ）焚膏继晷．（guǐ）D.大厅广众盛名之下，其实难副履．历（lǚ）瘦削．不堪（xuē）5.下列句子中，词语使用最恰当的一项是（）①据英国广播公司报道，3·11日本大地震五周年之后，录像、证言的公开在世人面前愈发模糊，福岛第一核电站事故真相越来越了。
2020-2021学年天津市塘沽区第一中学高三语文第一次联考试卷及答案解析
2020-2021学年天津市塘沽区第一中学高三语文第一次联考试卷及答案解析一、现代文阅读（36分）(一)现代文阅读I(9分)阅读下面的文字，完成下面小题。
材料一：“前两季的夏粮和早稻已丰收到手，分别比上年增产24.2亿斤、20.6亿斤，夏粮产量创历史新高，秋粮面积预计比上年增加800万亩，丰收在望。
”农业农村部相关官员介绍说，2020年还是一个丰收年，粮食会有个好收成。
手中有粮，心中不慌。
中国始终高度重视粮食安全，把14亿人的吃饭问题作为头等大事来抓。
“十三五”期间，严守18亿亩耕地红线，加大粮食生产政策支持力度，粮食连年丰收，产量持续稳定在1.3万亿斤以上。
2019年，中国粮食产量刷新历史纪录，达到13277亿斤，人均粮食占有量超470公斤，持续高于世界平均水平。
“中国用全球9%的耕地和6%的淡水资源满足了占全球近20%人口的粮食需求，这是非常了不起的伟大成就。
”联合国粮农组织总干事称赞道。
浓浓的科技范儿改变着农业，也增添了发展动力和活力。
“十三五”期间，中国持续加强农业与科技融合，中国农作物耕种收综合机械化率超过70%，农业科技进步贡献率达到59.2%，均较2015年显著提高；主要农作物自主选育品种升至95%，稳稳地做到了“中国粮用中国种”。
“十三五”期间，中国不断加强粮食储备应急管理，形成了中央储备和地方储备协同运作、政府储备和企业库存互为补充的粮食库存体系。
当前中国粮食库存处于历史高位，特别是稻谷、小麦，这两大口粮的库存可满足全国居民1年的消费需求。
（摘编自邱海峰《1.3万亿斤以上！“中国饭碗”稳稳的》，《人民日报海外版》2020年9月30日）材料二：受新冠肺炎疫情冲击、洪涝灾害影响和国际粮价震荡传导，近期我国粮食市场运行出现阶段性波动，这一波动受到了全社会的广泛关注。
数据显示，当前我国粮价稳中有涨，品种间走势有所分化，不同环节价格波动有所差异。
7月份，稻谷、小麦、玉米三种粮食集贸市场均价为每百斤122.4元，环比上涨0.2%，同比上涨1.7%。
2019-2020学年天津市塘沽区第一中学高三生物第一次联考试题及参考答案
2019-2020学年天津市塘沽区第一中学高三生物第一次联考试题及参考答案一、选择题：本题共15小题，每小题2分，共30分。
每小题只有一个选项符合题目要求。
1. 造成人类遗传病的原因有很多种，在不考虑基因突变的情况下，下列说法正确的是（）A.21三体综合征一般是由第21号染色体结构异常造成的B. 猫叫综合征是第5号染色体中缺失1条造成的遗传病C. 冠心病属于多基因遗传病，这类遗传病在群体中发病率较高D. 若父母表现型均正常，生一个患红绿色盲男孩的概率是1/42. 如图表示最适温度下反应物浓度对酶催化的化学反应速率的影响。
以下分析正确的是（）A.改变反应的pH，曲线形状不会变化B.若A点时温度升高10℃，曲线上升幅度将变大C.若B点时向反应混合物中加入少量同样的酶，反应速率会加快D.限制BC段曲线不再上长升的原因主要是反应物的浓度3. 关于酵母菌的叙述，错误的是（）A.酵母菌既含有核基因，又含有线粒体基因B.碳源充足和不充足的培养液中酵母菌种群的K值是相同的C.酵母菌无氧呼吸的终产物经自由扩散运到细胞外D.培养液中酵母菌的种群数量在培养早期呈“J”型增长4. 能正确说明酶特性的是( )A.酶都蛋白质B.酶是活细胞产生的，只能在生物体内发挥催化作用C.每一种酶只能催化一种或一类物质的化学反应D.酶的活性随着温度升高而不断提高5. 下列有关细胞中的水的叙述，正确的是（）A. 活细胞中的水都是自由水B. 晒干的种子中没有水C. 代谢旺盛的细胞中结合水所占比例低D. 沙漠植物抗干旱能力强，是因为其细胞中的自由水含量较高6. 红绿色盲属于伴x染色体隐性遗传病，下图为某家庭红绿色盲遗传的系谱图，结合图中信息及有关知识分析不正确的是（）A.随机人群中，男患者多于女患者B.3号个体携带的色盲基因来自于2号C.3号个体与女性携带者婚配，所生女儿患色盲的概率为1/4D.假设4号个体生育色盲儿子的概率为1/4，则其配偶不一定患色盲7. 托马斯—施泰茨等三位科学家在原子水平上显示了核糖体的形态和功能，他们的研究证实，在核糖体的肽链形成区域内没有蛋白质只有RNA。
2020届天津市塘沽区第一中学高三英语第一次联考试卷及答案
2020届天津市塘沽区第一中学高三英语第一次联考试卷及答案第一部分阅读（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A、B、C、D四个选项中选出最佳选项AConservation Volunteering in New ZealandWhether you are a student, professional or a retiree (退休者), anyone is welcome to make a difference and contribute to protecting some of the most beautiful islands in the world. Choose a suitable city and travelout to your conservation (保护) site to work with local people!Duration: 1-12 weeks Dates: Throughout the yearArrival day: Friday Return day: FridayRequirement: General level of fitness Age: 18+What will I be doing?Volunteer in New Zealand and enjoy conserving the environment through activities such as:·Tree planting·Walking trail construction·Protect native birds, insects, fish and penguins·Seed collection·Weed controlYou, and a group of up to 10 volunteers, will work under the guidance of a conservation team leader. Your team leader will give you regular safety instructions, inform you of the project aims and assist you with working effectively.No previous experience is necessary to join the project. All you need is a love of the environment and a fairly good level of fitness to help out!1.Who can sign up for this conservation volunteering project?A.A retired maths teacher.B.A primary school student.C.A scientist with heart disease.D.A businessman in a wheelchair.2.What can you do on the volunteer trip?A.Protect cultural sites and go shopping.B.Enjoy local sightseeing and go fishing.C.Protect weeds and build roads.D.Collect seeds and plant trees.3.From which is the text probably taken?A.A history book.B.A travel magazine.C.A research paper.D.A novel.BPeople from Britain and Ireland first came to live in Australia in 1788. They brought different dialects (方言) of English with them. These different kinds of English began to mix and change. The newcomers soon began to speak with their own typical accent (口音) and vocabulary. More and more people came to Australia during the Gold Rush in the 19th and 20th centuries. Some came from Britain and Ireland; others came from non-English speaking countries. Australian English continued to grow and change.Australian English has also been influenced by American English. During the Second World War, there were many American soldiers staying in Australia. More importantly, American television shows and music have been popular in Australia since the 1950s.Australians use many words that other English speakers do not use. The famous Australian greeting, for example, is G’day! A native forest is called the bush and central Australia is called the outback. Many words were brought to Australia from Britain and Ireland. For example, mate means “friend”, and it is still used in Britain. Some of these words have changed in meaning. Some words have come from Australian original languages, many of which are names for animals, plants and places, like dingo and kangaroo.Australian spelling comes from British spelling. In words like organise and realise, -ise is the expected and taught spelling method. In words like colour, favourite, -ouris the normal, but nouns such as the Labor Party and Victor Harbor are spelled with -or. Program, on the other hand, is more common than programme.There are also differences in the definition (定义) of words Australians use in different parts of the country. For example, football means “rugby” in New South Wales and Queensland, but “Australian rules football" in everywhere else in Australia. In New South Wales, a swimming costume is called a cossie or swimmers, while in Queensland it is called togs and bathers in Victoria.4. What does paragraph 1 mainly talk about?A. Reasons why English is important.B. Different dialects of Australian English.C. Various aspects that Australian English has been influenced.D. Changes of the accent and vocabulary in English.5. According to the text, which of the following is spoken only by Australians?A. Mate.B. Outback.C. Program.D. Rugby.6. Which is the following can best describe Australian English?A. Confusing and interesting.B. Multicultural and creative.C. Crazy and boring.D. Unchangeable and mixed.7. What might be the best title for the text?A. The History of AustraliaB. The Birth of Australian EnglishC. The Development of Australian EnglishD Different Kinds of English Across the WorldCA study has found that a lifetime of regular exercise and activity can slow down the aging process (衰老过程). Researchers say that getting older should not necessarily mean becoming more weak or sick. Their research shows that a devotion to a life of movement and exercise may help us live not only longer, but also healthier.For their study, the researchers looked at two groups. The first group was made up of 125 non-professional cyclists between the ages of 55 to 79. This group included 84 healthy men and 41 healthy women. We will call this group the “cyclists”.Researchers then found 130 people to make up a second group. Within this group, 75 people were aged from 57 to 80. The other 55 were between the ages of 20 and 36. The people in this group were also healthy, but they did not exercise regularly. We will call this group the “non-exercisers”. Smokers, heavy drinkers of alcohol and people with other health issues were not included in the study.Then, researchers gave both groups a series of tests. They tested their muscle mass (肌肉质量), muscular strength, percentage of body fat and the strength of their immune (免疫的) systems. Then the researchers compared the results of the two groups.Results showed that the cyclists did not experience body changes usually regarded as a normal aging process. For example, they did not lose muscle mass or muscular strength. Also, their body fat did not increase with age.The researchers also found something they had not expected. The study showed that the immune systems ofthe cyclists did not age either.The researchers advise us all to find an exercise that we like in our lives.8. How did the researchers carry out the study?A. By comparing.B. By discussing.C. By imagining.D. By reasoning.9. Which of the following is a result of the research?A. The cyclists kept a thin body shape.B. The non-exercisers gained weight easily.C. The cyclists’ muscles remained strong with age.D. The non-exercisers usually had health problems.10. Which is an unexpected result for the researchers?A. The cyclists had normal aging process.B. The cyclists’ immune systems didn’t age.C. The cyclists lost nearly all their fat.D. Everyone needed an exercise in their lives.11. Which of the following can be the best title for the text?A. Healthy People Need More ExerciseB. Take an Exercise, the Harder, the BetterC. Cycling Is the Best Way to Prevent AgingD. A Lifetime of Exercise Slows Aging ProcessDA cheap printed sensor could transmit wildfire warnings. Wildfires have recently destroyed regions across the world, and theirgravityis increasing. Hoping to reduce harm, researchersled by Yapei Wang, a Chinese chemist ofRenminUniversity, say they have developed an inexpensive sensor to detect such fires earlier with less effort.Current detection methods rely heavily on human watchfulness, which can delay an effective response. Most wildfires are reported by the general public, and other alerts come from routine foot patrols and watchtower observers. Passing planes and satellites also occasionally spot something, but “the fire first appears on the ground," Wang says. “ When you see the fire from the sky, it is too late. ”The team says its new sensor can be placed near tree trunks' bases and send a wireless signal to a nearby receiver if there is a dramatic temperature increase. That heat also powers the sensor itself, without replacingbatteries. The team printed the substances onto ordinary paper to create a sensor for just $ 0.40.But improving coordination among the different agencies involved in firefighting is even more crucial to address, says Graham Kent, an earthquake expert at theUniversityofNevada,Reno, who was not part of the study.Kentis director of ALERTWildfire, a network that uses cameras and crowd sourcing to watch for fires inCalifornia,NevadaandOregon. “The whole way that you respond to a fire until it's put out is like a ballet," he says. “You'd have to choreograph (设计) it just so, with resources precisely used at the right time and place and in the right order from detection to confirmation to assignment to extinguishment (熄灭).Fire detection is just step one.Wang says his team's next steps are to extend the device'ssignal range beyond the current 100 meters, which can limit practical use, and to develop a protective shield for it. The transmitter's effectiveness, he notes, will also need to be examined in the field ahead.12. What does the underlined word “gravity” in paragraph 1 probably mean?A. Pull.B. Extinction.C. Popularity.D. Severity.13. What do we know about the sensor?A. Its price remains high.B. Its batteries are replaceable.C. It can detect fires earlier and easier.D. It can reduce firefighters' pain.14. What doesKentmean in paragraph 4?A. Firefighting is easy but crucial.B. Fire detection resources are rich.C. Putting out a fire is an orderly activity.D. Technology is the key to extinguishing a fire.15. What's the plan for the new sensor according to Wang?A. Improving and testing it.B. Limiting its use and transmission.C. Examing and reducing its signal range.D. Getting it on the market ahead of time.第二节（共5小题；每小题2分，满分10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。
2020年天津市塘沽区第一中学高三英语第一次联考试卷及参考答案
2020年天津市塘沽区第一中学高三英语第一次联考试卷及参考答案第一部分阅读（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A、B、C、D四个选项中选出最佳选项AThank you. It’s my great honor to be given this award.You cannot imagine that I have always been a late starter. Years ago, when I was 16, I took an important exam — GCE(General Certificate of Education), which turned out to be a failure. My dad was reading my report card and saw that my position in class was 29th, but the number in class was 29. It meant that I had achieved the distinction of being bottom of my class.I wasn’t lazy, and I was really trying. You can picture how I felt. Dad put his hand on my shoulder and said, “You can only do the best you can, but whatever you decide to do, make sure you love it.” He was a really sweet guy and a great man. I knew his attempt to hide his disappointment with some of his encouraging words. I was depressed for a week, but his advice was a wake-up call.Fortunately I love working with my hands, and I was good at two things: woodwork and art, and I really loved to draw and paint. I was quite talented. Dad strongly encouraged me to go to art school, which in those days wasn’t the obvious place that a father would suggest.So I got into Hartlepool College of Art. The college was a revelation (出乎意料), the passionate teachers there, who were extremely interested in the students, not just tolerating them but actually engaging with them. It was a world apart from my schooling until then. It’s extraordinary what an enthusiastic teacher can do, drawing the student out, lighting independence, and encouraging a design of your own future, rather than waiting for something to happen. I’m honored to have become one of these passionate teachers years later.My teachers inspired me, and thanks to my dad, here I am tonight. I think I should mention all the talents I have worked with over time, and to my kids and my wife Giannina, thank you.Thank you for this great award. I shall find a very special place for it.1. How did the author feel after taking GCE?A. Happy.B. Upset.C. Tired.D. Relieved.2. What didHartlepoolCollege of Art impress the author most?A. The teachers were strict with students.B. The students set good examples for each other.C. The teachers inspired students’ passion for learning.D. The students got prepared for their lessons independently.3. The author gave this speech to ________.A. share his career choiceB. explain his teaching methodsC. describe his life experienceD. show his appreciationBSix Neanderthals who lived in what is now France were eaten by their fellow Neanderthals some 100,000 years ago, according to fearful evidence of the cannibalistic (食人的) event discovered by scientists in a cave in the 1990s. Now, researchersmay have figured out why the Neanderthals, including two children, became victims of cannibalism: Global warming.While previous studies have examined Neanderthal remains to find proof of cannibalistic behavior, this is the first study to offer clues as to what may have led Neanderthals to become cannibals. Scientists found that rapid changes in local ecosystems as the planet warmed may have wiped out the animal species that Neanderthals ate, forcing them to look elsewhere to fill their stomachs.The researchers examined a layer of sediment (沉积物) in a cave known as Baume Moula-Guercy, in southeastern France. In that layer, charcoal (碳) and animal bones were so well-preserved that scientists could reconstruct an environmental picture representing 120,000 to 130,000 years ago. They discovered that the climate in the area was likely even warmer than it is today, and that the change from a cold, dry climate to a warmer one happened quickly. “Maybe within a few generations”, study co-author Emmanuel said. As the animals that once populated the landscape disappeared, some Neanderthals ate what they could find — their neighbors.Cannibalism is by no means unique to Neanderthals, and has been practiced by humans and their s “from the early Palaeolithic to theBronze Age and beyond,” the study authors reported. The behavior adopted by the starving Neanderthals in the Baume Moula-Guercy should therefore not be viewed as “a mark of bestiality (兽性) or sub-humanity”, but as an emergency adaptation to a period of severe environmental stress, according to the study.4. What does the study mainly focus on?A. The social behavior of Neanderthals.B. The reason for cannibalism among Neanderthals.C. The climate change in southeasternFrance.D. The influence of global warming on ancient animals.5. What can possibly be used to describe the climate in southeasternFrance120,000 to 130,000 years ago?A. It was no warmer than it is today.B. It was first warm while later cold and dry.C. Its change was mild and went through quite a long process.D. Its change is a chief factor contributing to cannibalism.6. Which of the following might the study authors agree with?A. Neanderthals’ cannibalism showed their bestiality.B. Cannibalism was actually a measure the Neanderthals had to adopt to survive.C. Neanderthals’ cannibalism guaranteed their rule over other tribes.D. Only Neanderthals were found to have cannibalism in human history.7. Where can you most possibly find this passage?A. In a science journal.B. In a travel brochure.C. In a history book.D. In a geography book.CMy first week working in a restaurant, one of the servers said something that stuck with me: Everyone should work in a restaurant for at least a year. At the time, I didn't get it, but I took the advice to heart and worked in restaurants on and off for the next eight years. Before realizing it, I mastered many important skills, one of which is communication skill.When I was little, I was so shy that I used to hide behind my mom whenever someone spoke to me. And when I first started in restaurants, I had two personalities: Restaurant Lizzy and Home Lizzy. It was easier to pretend to be a different person while at work, since it was so different from who I actually was. But gradually, the skills I learned working in restaurants helped Home Lizzy come out of her shell in the real world.When you work in a restaurant, you don't have the luxury of hiding behind your parents to avoid talking to people. I'm still 110% an introvert, but restaurant work helped me communicate. Working in a restaurant not only helped me speak clearly, deliberately and directly but also taught me how to talk about almost everything. Some guests don't want their servers to interact too much with them, and that's fine. But some sit at the bar simply to chat with you. You learn how to judge your guests' level of interest in communicating with you, and how to exit a conversation at the appropriate time.My restaurant work is something that I'm most proud of and I know I wouldn't be the person I am today without those eight years of experience. If you're still on the fence about working in a restaurant for that long, start with one year. I doubt that you'll look back.8. What did the writer think of the server's words?A. Impressive.B. Ridiculous.C. Amusing.D. Logical.9. What do we infer from Paragraph 2?A. The writer tried different jobs.B. The writer became more sociable.C. The writer used an invented name.D. The writer had a hard time at work.10. Which of the following best describes the writer's restaurant work?A. Boring.B. Relaxing.C. Worthwhile.D. Unchallenging.11. What message does the writer try to convey in this passage?A. A strong-willed soul can reach his goal.B. Things are difficult before they are easy.C. Communication skills advance your career.D. Restaurantwork helps to achieve a better self.DSurfing the Internet for fun will make you a better employee, according to an Australian study.The University of Melbourne study shows that people who use the Internet for their own reasons at work are about 9 percent more productive than those who do not. Study author Brent Coker said, “Surfing the Internet at times helps increase an employee's attention.”“People need to relax for a bit to get back their attention,” Coker said on the university's website. “Having a short break, such as a quick surfing of the Internet, helps the mind to rest itself, leading to a higher total Internet attention for a day's work, and as a result, increases productivity (生产效率),” he said.According to the study of 300 workers, 70 percent of people who use the Internet at work surf the Internet for their own reasons during office hours. Among the most popular surfing activities are searching for information about products, reading online news, playing online games and watching videos. “Firms spend a lot of money on software toblocktheir employees from watching videos, using social networking sites or shopping online,” said Coker. “That's not always a good idea.”However, Coker said the study looked at people who surfed the Internet in moderation (适度), or were on the Internet for less than 20 percent of their total time in the office. “Those who spend too much time surfing theInternet will have a lower productivity than those without.” he said.12. What does the University of Melbourne study mainlyshow?A. People who surf the Internet are good employees.B. Not everyone surfs the Internet for fun during office hours.C. The Internet is becoming more and more important in people's life.D. Surfing the Internet for fun at times during office hours increases productivity.13. Which of the following is NOT mentioned in the passage as one of the most popular surfing activities?A. Watching videos.B. Reading online news.C. Reading online novels.D. Playing online games.14. The underlined word “block” in Paragraph 4 means “________”.A. stopB. organizeC. protectD. separate15. What can we infer from the last paragraph?A. Those who never surf the Internet have the lowest productivity.B. Spending too much time surfing the Internet reduces productivity.C. Most people don't surf the Internet in moderation during office hours.D. People should spend as little time as possible surfing the Internet.第二节（共5小题；每小题2分，满分10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。
2019-2020学年天津市塘沽区第一中学高三英语一模试卷及参考答案
2019-2020学年天津市塘沽区第一中学高三英语一模试卷及参考答案第一部分阅读（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A、B、C、D四个选项中选出最佳选项AWhat are you waiting for? A new series of movies shown this year can’t be missed. Have you enjoyed them already?Frozen IIFrozen was the highest grossing (票房) animated film ever. In Frozen II Elsa, Anna, Olaf and Krist left off Arendelle to seek thesource of Elsa’s icy magic. Although the millions of children who loved the first film are older now, they might give it a reception.Last ChristmasA festive romantic comedy, Emilia Clarke stars in Last Christmas as Bridget Jonesy , a shop assistant, whose life in London is a mess, and Henry Golding as the eligible bachelor(黄金单身汉)who tidies it up. The film’s director, Paul Feig, and co-writer, Emma Thompson, promise that the film is worth expecting.A Beautiful Day in the NeighborhoodTom Hanks stars in A Beautiful Day in the Neighborhood as the only American celebrity(名人) more famous than he is. As the host of Mister Rogers’ Neighborhood for more than 30 years, Fred Rogers is a legend of pre-school children’s television, which appeals to a large audience.Charlie’s AngelsHollywoodaction movies starring women are rare. But have you seen a movie starred, written and directed by women, too? Charlie’s Angels is one of the first. A reboot (翻拍) of the 1970s TV series, not to mention the two films from 2000 and 2003, the new version is directed by Elizabeth Banks. She also plays Bosley, one of the female detectives who are employed by Charles Townsend to go on global adventures.1. Which moviebecame the most popular cartoon film this year?A. Frozen II.B. Last Christmas.C. A Beautiful Day in the Neighborhood.D. Charlie’s Angels.2. Which character works on a TV station?A. Krist.B. Emilia Clarke.C. Fred Rogers.D. Bosley.3. Which action movie was directed and starred by a woman?A. Frozen II.B. Last Christmas.C. A Beautiful Day in the Neighborhood.D. Charlie’s Angels.BYou must have read "The Tortoise and the Hare(《龟兔赛跑》)" when you were younger. So which animal are you? The tortoise or the hare? Do you rush around trying to do things as quickly as possible? Or do you deal your work at a slow , but steady(稳定的)pace? Whether you approach life like the tortoise or the hare can make a difference in the results you'll see.Some will say that you should avoid being like the hare. After all. he was overconfident and finally lost the race. You mayalso have heard teachers say from time to time that "haste makes waste”. But what does that mean? Most people think it meant that the faster you do something,the more likely it is that you'll make mistakes. Many teaches wantyouto approach your schoolwork thoughtfully and carefully.But does haste always make waste? Not necessarily ! Some people are able to work quickly while also maintaining(保持)a high level of quality in all that they do. Recent research, however, is making the idea of haste making waste seem more believableResearchers found that the brain changes into a special mode(模式)when forced to make rapid decisions. Overall, there appears to be a trade-off between speed and correctness. As the brain makes decisions more quickly, those decisions are usually built on less information, which often leads to a greater likelihood of mistakes.When you approach things like the tortoise. you methodically and steadily work towards your goal. You might not arrive there first, but then again you might! In any case, you're likely to make fewer mistakes and you might just enjoy the journey more than the bare.Goals are great to work towards, but often the achievements aren't what we remember. In the end, the most meaningful and important parts of our lives are the journeys we went on , not the destination we reached. So be the hare when you have to, but always remember that the slow and steady journey is what you’ll remember and treasure the most.4. Why does the author mention the story in the first paragraph?A. To introduce the topic.B. To show its popularity.C. To suggest its importance.D. To advise readers to read it.5. For what purpose do teachers often say “haste makes waste to students?A. To ask them not to waste their time.B. To tell them it is OK to make mistakes.C. To ask them to avoid making silly mistakes.D. To tell them they should check their schoolwork.6. What is Paragraph 4 mainly about?A. How the brain collects the information it needs.B. When the decision made by the brain is correct.C. Why the quickly-made decision is often unwise.D. What the relationship between lime and results is.7. Which of the following may the author agree with?A. Finishing the race is often a victory for everyone.B. Joy is found not in finishing an activity but in doing it.C. The journey to every destination starts with a small step.D. A destination is important because it guides us on the journey.CSaroo Brierley, a 4-year-old boy, livedin ruralIndia. One day, he played with his brother along the rail line and fell asleep. When he woke up, he found himself alone. So he got on the train in front of him to search for his brother.That train took him a thousand miles across the country to a totally strange city. He lived on the streets, and then in an orphanage (孤儿院), where he was adopted by an Australian family and taken to Tasmania.Brierley is a famous writer now, and in his new book,A Long Way Home, he wrote he couldn’t help but wonder about his hometown back inIndia. He remembered landmarks, but since he didn’t know his town’s name, finding a small neighborhood in a vast country seemed impossible.Then he found a digital mapping program. He spent years searching for his hometown in the program’s satellite pictures. In 2011, he came across something familiar. He studied it and realized he was looking at a town’s central business district from a bird’s-eye view. He thought, “On the right-hand side you should see the three-platform train station”—and there it was. “And on the left-hand side you should see a big fountain”—and there it was. Everything matched!Standing in front of the house where he grew up as a child, he saw a lady standing at the entrance. It took him a few seconds but he finally remembered what she used to look like.In an interview Brierley says, “My mother came forth and walked forward, and I walked forward, my eyesfilled with tears and my brain blank. I just didn’t know what to say, because I never thought seeing my mother would ever come true. And here I am, standing in front of her.”8. Why did Brierley get on the train when he was a little boy?A. To go back to his home.B. To look for his brother.C. To travel toTasmania.D. To follow a stranger.9. What made it difficult for Brierley to find his hometown?A. The vast area ofIndia.B. The fact that he was nobody then.C. His not remembering the town’s name.D. The distance betweenAustraliaand his hometown.10. How did Brierley find his hometown?A. By studying digital maps.B. By analyzing old pictures.C. By travelling all aroundIndia.D. By spreading his story via his book.11. What’s the best title of the passage?A. Love for MotherB. Union with BrotherC. Memory of HometownD. Long Way back HomeDA team of researchersfrom theUniversityofColorado Boulderhave created a revolutionary type of robotic muscles. They are strong and flexible at the same time, can feel the movements they perform and, whenever they suffer damage, they can self-heal. However, what is best about them is probably the fact that they are extremely cheap to manufacture.The robotic muscles have been called actuators, and have drawn inspiration from real-life muscles. By creating robots equipped with this kind of actuators, researchers would allowthem to perform movements just like human muscles.To make the robotic muscles work, they filled some flexible material with electrodes(电极)and with liquid and oil. Then, they applied some electricity, and the liquid and oil started moving around the electrodes and powered them. This way, the robotic muscles started contracting and relaxing just like real muscles, but a lot quicker.Researchers also took inspiration from the variety of human muscles, and created more types of actuators, each of them performing a different movement. They called these robotic muscles HASEL ( Hydraulically-Amplified Self-healing Electrostatic). However, they are superior to biological muscles as they are stronger, faster, and more flexible.Even the researchers were amazed they could develop such technology. Eric Acome, the author of one of the studies, explained what is unique about the robotic muscles.“The ability to create electrically powered soft actuators that lift a gallon of water at several times per second is something we haven't seen before.”These muscles are special because they are also self-healing. This property is given by the liquid placed inside of them, which also gives them a lot more advantages than those mechanisms (机械)using solids. In the end, the material which keeps the liquid, the oil and the electrodes is extremely cheap. It is a type of polymer (聚合物)similar to the one used for potato chips bags, and can be manufactures for only 10 cents.12. What can we learn about actuators?A. They can heal on their own.B. They are biological muscles.C. They can not move like human muscles.D. They are slower to react than real muscles.13. What do actuators use to directly power electrodes?A. Solids.B. Liquid and oil.C. A type of polymer.D. Potato chips bags.14. What is the last paragraph mainly about?A. The origin of actuators.B. The opinions on actuators.C. The advantages of actuators.D. The significance of actuators.15. In which part of a newspaper will the textmost probably appear?A. Health.B. Culture.C. Education.D. Technology.第二节（共5小题；每小题2分，满分10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。
天津市2020年上学期塘沽第一中学高三英语第一次月考试题(最新精编)可打印
天津市2020年上学期塘沽第一中学高三英语第一次月考试题第Ⅰ卷第一部分：英语知识运用（共两节，满分45 分）第一节：单项填空（共15 小题；每小题 1 分，满分15 分）从A、B、C、D 四个选项中，选出可以填入空白处的最佳选项。
1.---Could we put off the meeting? Sheasked.--- , he answered politely. This is the only day everyone isavailable.A.NotlikelyB.NotexactlyC.NotnearlyD. Notreally2.Catherine, the alarm clock for 6 o’clock, or you would oversleep and be late for thetrain.A.settingB.setsC.setD. toset3.Thebuilding,from top visitors can enjoy a good view of Sanya, attracts hundreds of tourists everyday.A.whichB.whoseC.itsD. where4.John in the United States for decades, but in the past year he has already adapted to living inChina.A.waslivingB.hadlivedC.haslivedD. lived5.This article opens and closes with descriptions of two news reports,each one major point in contrast with the other.A.makesB.madeC.makingD. is tomake6.---Why so serious,dear?---Nothing. I am just thinking abouttheproblem tomorrow.A.discussedB. willbediscussedC. tobediscussedD. beingdiscussed7.Some parents are just too protective. They wantto their kids from every kind of danger, real or imagined.A.spotB.dismissC.distinguishD. shelter8.A identification card is required when you purchase foreign money from Bank ofChina.A.beneficialB.effectiveC.validD. flexible9.---When are you going to return mynovel?---Don’tworry.You have your book soon, Ipromise.A.shallB.shouldC.mayD. must10.---I like staying at home, watching TV or surfing the Internet all day onSundays.---That’s I don’t agree. I think you’d better go out for awalk.A.whereB.howC.whenD. what11.---It is said that J.K Rolling is coming to our school. Are you coming to herspeech?--- . I can’twait.A.It’s a dealB. YoubetC. It is upto youD. Of coursenot12.I still remember the accident andthetroubles has caused tome.A.whichB.whatC.itD. when13.I wonder whenitwas you cametorealize his wordsmeant.A.that;whatB.what;thatC.what;whatD. that;which14.Only when be possible to sign thepapers.A.does the lawyer comewill itB. the lawyer comes itwillC. has the lawyer comeit willD. the lawyer comes willit15.---Where are we going fordinner?---I don’t mind wherewego there is my favorite foodsushi.A.incaseB. assoonasC. nowthatD. so long as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16～35 各题所给的A、B、C、D 四个选项中，选出最佳选项。
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天津市滨海新区塘沽一中2020届高三第一次月考学校_________ 班级__________ 姓名__________ 学号__________ 一、单选题
选项现象或事实解释
A．肉制品中添加适量的亚硝酸钠亚硝酸钠有防腐的作用
B．液氨常用作制冷剂液氨汽化时要吸收大量的热
C．利用静电除尘装置除去粉尘胶体粒子带电
D．Al(OH)
3用作塑料的阻燃剂Al(OH)
3
受热熔化吸收大量的热
2. 下列有关化学用语表示正确的是（）
A．原子核内有10个中子的氧原子：
O B．硫离子的结构示意图：C．次氯酸钠的电子式：
D．葡萄糖分子的结构简式：
3. 下列离子方程式书写不正确的是（）
A．侯氏制碱法：
B．溶液滴加溶液混合：
C．氧化铁与足量溶液反应：
D．已知酸性强弱：，则向溶液中通入少量时，
4. 设N
A
表示阿伏加德罗常数的值，下列说法中正确的是（）
①与H
2O完全反应生成氯化氢和次溴酸，转移的电子数为N
A
②硫酸钠固体中含有0.1N
A
个硫酸钠分子；
③锌与一定浓硫酸反应，产生标准状况下和的混合气体，锌失去
电子数为2N
；
A
；
④中含有的质子数、中子数、电子数均为N
A
⑤标准状况下，全部溶于水所得溶液中的数目为0.1N
A
⑥的浓硫酸与足量的镁反应时转移的电子数为0.18N
A
A．③④B．①②③④C．③④⑤D．①②③④⑤⑥5. 下列操作能达到实验目的是（）
A．将样品溶于稀硫酸后，滴加溶液变红，说明样品变质B．只用溶液来鉴别溶液、溶液和稀硫酸
C．为检验某品牌实验中是否加碘，将样品溶解后加淀粉溶液
D．向某溶液中滴加少量稀硝酸，产生白色沉淀，证明其中含有
6. 短周期主族元素X、Y、Z、W质子序数依次增大，其中X的一种单质是自然界硬度最大的物质，Y原子的最外层电子数是内层电子数的3倍，Z是短周期元素中金属性最强的元素，W与X同主族。
下列说法正确的是
A．原子半径：r(X)<r(Y)<r(Z)<r(W)
B．X的氢化物的热稳定性比Y的强
C．W的最高价氧化物的水化物是一种强酸
D．Y与Z形成的化合物中可能存在共价健
7. 类比（比较）是研究物质性质的常用方法之一，可预测许多物质的性质。
但类比是相对的，不能违背客观实际下列各说法中，正确的是（）
A．气体通入溶液中不反应，气体通入溶液中也不反应
B．与会因为水解相互促进而完全反应生成和和也可以
C．与稀盐酸反应生成与稀硝酸反应生成
D．在标准状况下为气体，所以在标准状况下同样为气体
8. 下列有关实验的叙述正确的是
A．用图1装置将氯化铁溶液直接蒸干得到氯化铁固体
B．利用图2装置可制备Fe(OH)
2
片刻，溶液中有气泡产生，广口瓶内始终保持无色
C．图3微热稀HNO
3
D．利用图4可收集氯化氢并进行尾气吸收
9. 在给定条件下，下列选项所示的物质间转化均能实现的是（）
A．
B．
C．
D．
10. 某溶液中可能含有、、、、、、、
、、等离子。
当向该溶液中逐滴加入一定物质的量浓度的盐酸溶液时，发现生成沉淀的物质的量随盐酸溶液的体积变化如图所示。
下列说法正确的是（）
A．原溶液中一定含有
B．反应最后形成的溶液中的溶质只有
C．原溶液中含有与的物质的量之比为
D．原溶液中一定含有的阴离子是：、、、
11. 已知X、Y、Z、W四种短周期主族元素在周期表中的相对位置如图所示，下列说法中正确的是（）
A．W的原子序数不可能是X的原子序数的3倍
B．Z元素可能是金属元素
C．四种元素的原子有可能均能与氢原子形成18电子分子
D．W的气态氢化物的稳定性一定比Y的强
溶液中，得到标准状况下的气12. 2.8g Fe全部溶于一定浓度、200mL的HNO
3
体1.12L，测得反应后溶液的pH为1，若反应前后溶液体积变化忽略不计，则下列有关判断正确的是（）
A．反应后溶液中铁元素可能以Fe2+形式存在
﹣）=0.85 mol/L
B．反应后溶液中c（N0
3
C．反应后的溶液最多还能溶解1.4 g Fe
的混合气体
D．1.12 L气体可能是NO、NO
2
二、有机推断题
13. 七种短周期主族元素①～⑦，其原子序数依次增大，②元素是地壳中含量最多的，⑤元素为两性元素，④⑦两元素组成的化合物是我们日常生活必须的调味品，②和⑥元素的原子序数之和是①和④两元素原子序数之和的两倍。
请用化学用语回答下列问题：
(1)③、⑤、⑥的简单离子半径由大到小的顺序为______________。
(2)⑥和⑦的最高价氧化物对应的水化物的酸性强弱为________＞_______。
(3)写出二氧化硅与含上述某种元素的酸反应的化学方程式
_________________。
(4)由⑤和空气、海水构成的原电池中，其正极反应式为________________。
(5)由上述元素形成的物质可发生下图中的反应，其中B、C、G是单质，B为黄绿色气体。
①写出D溶液与G反应的化学方程式________________________________。
②混合物X中的某物质不溶于水，但既能溶于酸又能溶于碱，写出能解释它在苛性钠溶液中发生反应的原因的电离方程式
_________________________________。
③写出电解A溶液的离子方程式_______________________________。
三、原理综合题
14. 铜是生物必需的微量元素，也是人类最早使用的金属之一。
铜的生产和使用对国计民生各个方面都产生了深远的影响。
（1）写出铜与稀硝酸反应的化学方程式_____________________________。
（2）为了保护环境和节约资源，通常先用和稀硫酸的混合溶液溶出废旧卬刷电路板中的铜，最终实现铜的回收利用，写出溶出铜的离子方程式
__________________________。
（3）工业上以黄铜矿为原料，采用火法溶炼工艺生产铜，该工艺的中间过程会发生反应：，该反应的氧化剂是________；当生成时，反应中转移的电子为______。
（4）研究性学习小组用“间接碘量法”测定某试样中（不含能与I-反应的氧化性杂质）的含量，取试样配成溶液，每次取，滴加溶液后有白色碘化物沉淀生成，写出该反应的离子方程式
__________________________。
（5）继续滴加KI溶液至沉淀不再产生，溶液中的I
用硫化硫酸钠标准溶液滴
2
定，发生反应的化学方程式为：，平均消耗的溶液。
则试样中的质量分数为
______________________。
四、实验题
15. 实验室中根据已知熔点是16.6℃，沸点是44.4℃，设计如下图所示近产验装置制备固体
（1）实验开始时，先点燃酒精灯是___________（填编号）
（2）装置D中浓硫酸的作用除了混合气体流速外还有_____________。
（3）由于可逆反应，所以从E管出来的气体中含有、为了证明含有可以将该气体通入_______________，证明含有可以将该气体通入
_____________
a．品红 b．溴水 c．BaCl
溶
2
液 d．溶液
（4）装置F的作用是___________________________。
（5）如果没有装置G，则F中可能看到___________________________。
（6）从装置G导出的尾气常可以用烧碱或石灰乳吸收。
请写出用足量烧碱吸收尾气的离子方程式为：___________________________。
（7）尾气常采用烧碱或石灰乳吸收，请分析比较两种吸收剂吸收的有点
___________________________。
五、工业流程题
16. 铜镉渣主要含锌、铜、铁、铬（）、钴（）等单质。
湿法炼锌产生的铜镉渣用于生产金属镉的工艺流程如图：
下表列出了相关金属离子生成氢氧化物沉淀的（金属离子的起始浓度为
氢氧化物
开始沉淀的 1.5 6.5 7.2
沉淀完全的 3.3 9.9 9.5
（1）酸浸时粉碎铜镉渣的目的是_________________。
（2）操作Ⅰ产生的滤渣主要成分为_________________。
（3）①操作Ⅲ中先加入适量，发生反应的离子方程式为
_________________。
②再加入控制反应液的,范围为______，判断依据是
_________________。
③若加入的不足，加入后所得的电解液中会含有元素。
请设计实验方案加以鉴别___________。