2020温州实验中学二模参考答案

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2019-2020学年温州市第二实验中学高三英语二模试题及答案

2019-2020学年温州市第二实验中学高三英语二模试题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ATheatre and film fans will be excited about what's on stage and on screen.THEATRE☆Take in a Broadway show at Mirvish Venues. The Grand Theatre hosts plays and musicals in London, Ontario. The building dates back to 1901 and starts a rare architectural feature.☆In the heart of Ontario's bread-basket, treat yourself to uniquely Canadian modern productions at the Blyth Festival in Goderich.☆Ontario becomes popular on the stage as theatre festivals. The Stratford Festival produces classic productions mainly on Shakespeare in Stratford. Works by Bernard Shaw, the founder of social realism in English literature enrich the stage at the Shaw Festival in Niagara-on-the-Lake.FILM☆Expand your mind with great modem, independent film during the Reel Asian FilmFestival or visit the TIFF Bell Lightbox for exhibitions related to film and theatre.☆Making productions that don't reach half an hour by new filmmakers, the Breakthroughs Film Festival provides some of the most video movies.☆Five amazing programs feature films from across the globe during the Durham Region International Film Festival.☆One of the top film festivals in the world, the 'Toronto International Film Festival features everything from mainstream Hollywood productions to international cinema.COMEDY☆For a laugh, head to a comedy club. Absolute Comedy, Second City and Yuks Yuks all specialize in finding your funny bone.☆The Toronto Alliance for the Peforming Arts will keep you up to date on what 's playing onToronto's stages; you can look through their “TOnight” for on-the-go performing arts tickets, reviews and searches on your mobile.1. Where should those preferring realistic dramas go?A. London.B. Stratford.C. Goderich.D. Niagara-on-the-Lake.2. What does the Breakthroughs Film Festival focus on?A. Short films.B. Films across the world.C. Modern films.D. Films by young directors.3. What might “TOnight” be?A. A comedy.B. An application.C. A guidebook.D. An organization.BRock and pop hitmaker Jim Steinman, who wrote and composed music for Meat Loaf, Bonnie Tyler, Celine Dion, and more, died Monday in Danbury, Connecticut. He was 73. Steinman's brother Billconfirmed that the cause of death was kidney (肾) failure.A statement posted on Steinman's Facebook page read, “It's with a heavy heart that I can confirm Jim's passing. There will be much more to say in the coming hours and days as we prepare to honor this giant of a human being and his glorious legacy.”Steinman's wholly unique career found him working as a composer, lyricist, and producer for many artists in a variety of styles. According to a biography on his website, the records he's worked on have sold more than 190 million copies worldwide. He was nominated (提名) for four Grammys, and won Album of the Year for his work on Dion's 1996 smash,Falling Into You.Steinman began his career in a musical theater while in college, writing and starring in a rock musical calledThe Dream Engine, which gained the attentionof New York theatrical producer Joe Papp. After graduating, Steinman worked at the Public Theater (which was established by Papp). In 1973, Yvonne Elliman recorded Steinman's song “Happy Ending”, which became Steinman's first commercially released tune. That same year, the Public Theater staged his musicalMore Than You Deserve.One of the actors who auditioned forMore Than You Deservewas Meat Loaf, and he and Steinman soon struck up a close personal and professional relationship. The two began working on Meat Loaf's solo album,Bat Out of Hell, in the early 70s, but it wouldn't be released until 1977. It wasn't until about one year later — after Meat Loaf performed onSaturday Night Live— that the album became a hit.“There is no other songwriter ever like him,” Meat Loaf said. “I can never repay him. He has been such an influence, in fact, the biggest influence on my life, and I learned so much from him that there would be no way Icould ever repay Mr. Jim Steinman.”4. What caused Jim Steinman's death?A. A hit on the head.B. A kidney problem.C. A failed operation.D. A lack of blood supply.5. What is the correct order of the following events?a. Meat Loaf performed onSaturday Night Live.b. Jim released his first commercial tuneHappy Ending.c. Jim and Meat Loaf released the albumBat Out of Hell.d. Jim starred in a rock musical calledThe Dream Engine.e. Jim's musicalMore Than You Deservewas put on show.f. Jim won Album of the Year for his work onFalling Into You.A. dbecafB. dbcfaeC. fdcaebD. fbceda6. Why was Jim Steinman important to Meat Loaf?A. Because Jim was an extraordinary songwriter.B. Because Jim allowed him not to repay his debt.C. Because Jim was influential in the music industry.D. Because Jim gave him friendship and career support.7. What do we learn about Jim Steinman?A. He mainly focused his career on acting in musicals.B. He is a well-known and widely respected musician.C. His closest friends were Bill, Papp and Meat Loaf.D. He won four Grammys in the course of his career.CIn a study published in Nature Machine Intelligence, researchers at Ohio State University show how artificial intelligence（AI）can follow clinical trials to identify drugs for repurposing, a solution that can help advance innovative treatments.Repurposing drugs is legal and not unusual. When doctors prescribe(开处方)drugs that have been approved by the Food and Drug Administration(FDA)for purposes different from what is printed on the labels, the drugs are being used “off-label” Just because a drug is FDA-approved for a specific type of disease does not prevent it fromhaving possible benefits for other purposes.For example, Metformin, a drug that is FDA-approved for treating type 2 diabetes, is also used to treat PCOS(a disease of women), and other diseases. Trazodone, an anti-depressant with FDA-approval to treat depression, is also prescribed by doctors to help treat patients with sleep issues.The Ohio State University research team created an AI deep learning model for predicting treatment probability with patient data including the treatment, outcomes, and potential confounders(干扰因素).Confounders are related to the exposure and outcome. For example, a connection is identified between music festivals and increases in skin rashes(红疹). Music festivals do not directly cause skin rashes. In this case, one possible confounding factor between the two may be outdoor heat, as music festivals tend to run outdoors when the temperature is high, and heat is a known cause for rashes. When working with real-world data, confounders could number in the thousands. AI deep learning is well-suited to find patterns in the complexity of potentially thousands of confounders.The researcher team used confounders including population data and co-prescribed drugs. With this proof-of-concept, now clinicians have a powerful AI tool to rapidly discover new treatments by repurposing existing medications.8. What do we know about a drug used off-label?A. It is sold without a label.B. It is available at a low price.C. Its uses extend beyond the original ones.D. Its clinical trials are rejected by doctors.9. Metformin and Trazodone are similar as both of them________.A. are used off-labelB. treat rare diseasesC. result in sleep issuesD. are medical breakthroughs10. What can be inferred about “confounders”?A. They are possible treatments.B. They are environmental factors.C. They can be easily recognized in real-world data.D. They should be taken into serious consideration.11. What is the main idea of the text?A. AI examines benefits of existing drugs.B. AI identifies off-label uses for drugs.C. AI finds new drugs for common diseases.D. AI proves the power of drug research.DI was so worried about handing my little boy over during his first week of school, but you made it easier. You smiled at him like a mother would at her own child.You showed warmth and your hugs were always on offer.After a day in class with you, Charlie would come home singing. Whenever I hear Do Your Ears Hang Low or see him stretching to the sky when singing about the days of the week, I will think of you.I didn't tell you at the time, but I loved your morning song so much that Iimplementedit in my own class (I'm a teacher, too).When you saw I was troubled, you hugged me with your smile and I knew everything would be OK. You made parents feel as cared for as our children.In the short time I knew you; you taught me about the type of teacher I desire to be. You never seemed disturbed by the mountain of paperwork or impossible work-life balance that comes with the role. Instead, you appeared to embrace every minute.I can't understand why you've been taken from us. Telling Charlie was one of the hardest things I've had to do.I'm not sure he fully understands, but he told me he loved you and has been asking whether your"robot powers"will work in heaven.A friend once told me white feathers are angels telling us that loved ones in heaven are well. On the first day collecting the children without you，a white feather floated through the sleet (雨夹雪). Watching the younger ones bounce and gigle as they tried to catch it was beautiful.I wish I had told you all of this when you were with us.I hope that you knew how you brought happiness to everyone you met and how loved you were. Goodbye, Dear Friend.12. What does the underlined word "implemented" in Paragraph l probably mean?A. Looked back on.B. Looked forward to.C. Thought highly of.D. Made use of.13. What can we learn from the passage about parents?A. They need to sing songs before children.B. They need to feel the affection as well.C. They find it hard to handle their kids.D. They find it necessary to hug the teachers.14. The writer mentioned "white feather" in Paragraph 4 mainly to ______.rm us of the loved one's deathB. remind us it's time for a snowball fightC. tell us the teacher stays in our mind after deathD. warn us of the falling snow when collecting children15. What's the writer's main purpose in writing this article?A. To make a remark on Charlie's teacher.B.To say goodbye to her fellow teacher.C. To take pity on her fellow teacher.D. To recall and show respect for Charlie's teacher.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。

浙江高考温州二模数学参考答案2020.04

当 a ≤0 时，对任意 x (−，+ ) ，都有 f (x) 0 ，则 f (x) 的单调递增区间为 (−，+ ) ；当 a 0 时， f (x) 0 x ln a ，
数学（高考试题）参考答案第 4 页（共 6 页）
则 f (x) 的单调递减区间为 (−，ln a) ，单调递增区间为 (ln a，+ ) ． (Ⅱ)解法一：首先由 f (0) = 1− b ≥ 0 ，得 b ≤1．
综上， a + 5b 的最大值为 2 e ．
命题者：胡浩鑫林荣戴雪燕黄成宝陈德印叶事一
数学（高考试题）参考答案第 6 页（共 6 页）
解法二：由条件可知 f (x) = ex − ax − b x2 +1≥ 0 对 x [0，+ ) 恒成立，
所以 f (1) = e − 1 (a + 5b) ≥ 0 ，即 a + 5b ≤2 e .
2
2
下证：存在 a，b 满足 a + 5b = 2 e ，且能使 f (x) = ex − ax − b x2 +1 在[0，+ ) 上的最
小值为 0 ．
取 a = 3 e ， b = 5e ，（此取值可使 f (1 ) = 0 ）此时， a + 5b = 2 e ，
4
4
2
且 f (x) = ex − a − bx ， f (x) = ex −
b
x2 +1
(x2 +1) x2 +1
注意到 b = 5e 1，当 x [0，+ ) 时， (x2 +1) x2 +1≥1， ex ≥1 ， 4
2020 年 4 月份温州市普通高中高考适应性测试数学试题参考答案

2020届温州市第二实验中学高三英语二模试卷及答案解析

2020届温州市第二实验中学高三英语二模试卷及答案解析第一部分阅读（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AFind Your Chicago Architecture TourChicago is known around the world for its architecture. Whether you tour downtown or a neighborhood, our guides will tell you the stories behind the buildings.Must-see ChicagoMust-see Chicago is a fast-paced, 90-minute tour to Chicago featuring(以…为特色) some of its most famous buildings, including the Wrigley Building, Tribune Tower and more! Get a brief overview of more than a dozen buildings—as well as Chicago landmarks like Millennium Park, the Loop and the Chicago River.Duration: 1.5 hoursPrice: $ 26 public, free for CAC membersArchitecture HighlightsDiscover the exciting diversity(多样性) of Chicago architecture, which traces the city’s development from its founding through present day. We cover about 30 miles of Chicago design, passing through the Loop and the Gold Coast, as well as Hyde Park and other areas of the South Side. We’ll see two university campuses and several parks.Duration: 3.5 hoursPrice: $ 55 public, free for CAC membersHistoric Treasures of Chicago’s Golden AgeLearn about the great architectural landmarks of Michigan Avenue and State Street, with views inside beautiful buildings from the 1890s〜1930s. The most memorable parts include the amazing interiors(内部) of the Palmer House Hotel and the Chicago Cultural Center.Duration: 2 hoursPrice: $ 26 public, free for CAC membersElevated Architecture: Downtown “L” TrainExplore Chicago’s amazing architecture from the unique view of elevated trains and station platforms. Learn the history behind the famous “L” system and hear how it has shaped the development of buildings within theLoop. The city’s first elevated train started making trips in 1892. Now considered one of Chicago’s most wonderful features, the “L” offers impressive views of downtown.Duration: 2 hoursPrice: $ 26 public, free for CAC members1.Which tour can you choose if you want to see Millennium Park?A.Must-see Chicago.B.Historic Treasures of Chicago’s Golden AgeC.Architecture Highlights.D.Elevated Architecture：Downtown “L” Train.2.When visiting Architecture Highlights, a couple should pay ______.A.$55B.$ 110C.$ 165D.$ 2203.What can you see on the third tour?A.The Chicago River.B.The Gold Coast.C.The elevated trains.D.The Palmer House Hotel.BWho is a genius? This question has greatly interested humankind for centuries.Let's state clearly: Einstein was a genius. His face is almost the international symbol for genius. But we want to go beyond one man and explore the nature of genius itself. Why is it that some people are so much more intelligent or creative than the rest of us? And who are they?In the sciences and arts, those praised as geniuses were most often white men, of European origin. Perhaps this is not a surprise. It's said that history is written by the victors, and those victors set the standards for admission to the genius club. When contributions were made by geniuses outside the club—women, or people of a different color1 or belief—they were unacknowledged and rejected by others.A study recently published bySciencefound that as young as age six, girls are less likely than boys to say that members of their gender(性别)are “really, really smart.” Even worse, the study found that girls act on that belief: Around age six they start to avoid activities said to be for children who are “really, really smart.” Can our planet afford to have any great thinkers become discouraged and give up? It doesn't take a genius to know the answer: ly not.Here's the good news. In a wired world with constant global communication, we're all positioned to see flashes of genius wherever they appear. And the more we look, the more we will see that social factors(因素)likegender, race, and class do not determine the appearance of genius. As a writer says, future geniuses come from those with “intelligence, creativity, perseverance(毅力), and simple good fortune, who are able to change the world.”4. Whatdoes the author think of victors' standards for joining the genius club?A. They're unfair.B. They're conservative.C. They're objective.D. They're strict.5. What can we infer about girls from the study inScience?A. They think themselves smart.B. They look up to great thinkers.C. They see gender differences earlier than boys.D. They are likely to be influenced by social beliefs6. Why are more geniuses known to the public?A. Improved global communication.B. Less discrimination against women.C.Acceptance of victors' concepts.D. Changes in people's social positions.7. What is the best title for the text?A. Geniuses Think AlikeB. Genius Takes Many FormsC. Genius and IntelligenceD. Genius and LuckCRain is vital to life on Earth. However, rain isn’t just made of water anymore—it’s partly made of plastic.Millions of tiny pieces of plastic, called microplastics, are wandering around Earth’s atmosphere and traveling across entire continents according to a study published in one journal on April 12.Microplastics are plastic particles less than 5 millimeters in diameter and come from a number of sources. Plastic bags and bottles released into the environment break down into smaller and smaller bits. Some microplastics are produced deliberately to provide abrasion(研磨)in products, such as toothpaste and cleansers. Another major source is your washing machine. When you wash clothing, tiny microfibers get washed away with the wastewater. Even though the water is treated by a wastewater plant, the microplastics remain,and they are released into the sea.Plastic rain may remind people of acid rain, but the former is far more widespread and harder to deal with.The tiny particles, too small to be seen with the naked eye, are collected by the wind from the ground. They are so light that they stay in the air to be blown around the globe. As they climb into the atmosphere, they are thought to act as nuclei (核心) around which water vapor (水蒸气) combines to form clouds. Some of the dust falls back to land in dry conditions, while the rest comes down as rain.Microplastics have been found everywhere you can imagine. From fish and frogs to mice and mosquitoes, their bodies have been found on average to contain 40 pieces of microplastic. As the top of the food chain, humans are exposed to microplastics, too. “We live on a ball inside a bubble,” microplastic researcher Steve Allen said. “There are no borders, there are no edges. It rains on the land and then gets blown back up into the air again to move somewhere else. There’s no stopping it once it’s out.”8. What do we know about microplastics?A. They have a diameter of over 5 millimeters.B. They have become a threat to humans.C. They are light and can be easily dealt with.D. They cause acid rain and plastic rain.9. What does Paragraph 3 mainly talk about?A. Waysto deal with microplastics.B. The wide use of microplastics.C. Where microplastics come from.D. How microplastics pollute water.10. What does Steve Allen want to tell us in the last paragraph?A. No place can be safe from microplastic pollution.B. The atmosphere possesses the ability to self-cleanse.C. Countries should work together to fight pollution.D. Wind causes microplastics to move somewhere else.11. The main purpose of the article is to________.A. call on people to use fewer plastic productsB. warn people of the danger of microplasticsC. introduce the sources and effects of microplasticsD. make a comparison between acid rain and plastic rainD36-year-old Juan Dual likes to joke that he’s empty inside. Juan’s story began when he was only 13. It was then that he was diagnosed with a terrible disease, which left him with a 99.8% chance of developing cancer ofthe digestive system. At age 19, right after finishing high-school, Juan underwent a tough operation to take away his colon and rectum. Sadly, it was only the beginning. By age 28, Juan’s disease had affected his stomach and gallbladder so he had to go under the knife again.Having just recovered from several serious surgeries, Juan Dual decided to accept the invitation of some friends of his parents and travel to Japan. It was there that things started to change for the better. He didn’t speak a word of Japanese, so he spent most of his time walking his dog. One day, the dog pulled harder, and Juan realized that he was still able to jog, and he started to do just that.Months later, he found himself working in a small, peaceful town in England. There was little in terms of entertainment, but the town was surrounded by hills, so he devoted even more of his time to running. He befriended some like-minded folks and told them what he’d been through, and they seemed amazed at the fact that he was still alive, let alone that he was pushing himself to exercise. That’s when the idea of focusing on motivating others took root in his mind.With the help of Pepa, a nutritionist, Juan Dual slowly relearned how to eat to keep his energy level high enough to sustain him during physical activity. Eight months after his last operation, he finished the Barcelona half marathon in two hours. He then started training for mountain running and ultra-marathons.12. Why does Juan Dual say he is empty inside?A. Because he has no desire for anything.B. Because he doesn’t have much knowledge.C. Because he always suffers from great hunger.D. Because many of his organs have been removed.13. What made Juan Dual aware that he could still run?A. His parents’ support.B. A walk with his dog.C. The idea of challenging himself.D. His quick recovery from surgeries.14. When did Juan Dual decide to inspire others with his story?A. After finishing the Barcelona half marathon.B After being introduced to a nutritionist named Pepa.C. After sharing it with his friends in an English town.D. After making friends with people with similar sufferings.15. Which of the following words can best describe Juan Dual?A. Ambitious and intelligent.B. Inspiring and responsible.C. Unfortunate but determined.D. Confident but stubborn.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。

温州市2020初三化学中考二模试题和答案

温州市2020初三化学中考二模试题和答案一、选择题（培优题较难）1．小明同学对所学部分化学知识归纳如下，其中完全正确的一组是A 物质的分类B物质的检验和区别纯碱、胆矾、生石灰—盐类煤、石油、天然气—化石燃料可用灼烧闻味的方法检验羊毛和涤纶燃着的木条区别氮气和二氧化碳C 概念的认识D物质的性质和应用能生成盐和水的反应是中和反应含氧的化合物是氧化物洗涤剂乳化作用—去油污石墨优良的导电性—作电极A．A B．B C．C D．D【答案】D【解析】A、生石灰是氧化钙的俗称，属于氧化物，不完全正确，错误；B、燃着的木条不能区别氮气和二氧化碳，因为氮气和氧气都不燃烧、不支持燃烧，都能使木条熄灭，不完全正确，错误；C、能生成盐和水的反应不一定是中和反应，例如二氧化碳和氢氧化钠反应；含氧的化合物是不一定是氧化物，例如氯酸钾，错误；D、洗涤剂具有乳化作用可去油污，石墨优良的导电性可作电极，完全正确。

故选D。

2．下表中，有关量的变化图象与其对应叙述相符的是A．某同学误将少量KMnO4当成MnO2加入KClO3中进行加热制取氧气，部分物质质量随时间变化如图所示，则t1时刻，KMnO4开始分解B ．在一定量硝酸银和硝酸铜的混合溶液中加入铁粉，充分反应，硝酸根质量分数随加入铁粉质量变化如图所示C ．密闭容器中发生化学反应，X 、Y 、Z 的质量随着反应时间的变化如图所示，则该反应的化学方程式一定为3X+Y=4ZD ．稀硫酸和氢氧化钠溶液反应的pH 的变化图象如图所示，图中c点时，可以加BaCl 2溶液来检验硫酸是否被反应完【答案】A 【解析】【详解】A 、误将少量KMnO 4当成MnO 2加入KClO 3中进行加热，高锰酸钾在加热的条件下分解成锰酸钾、二氧化锰和氧气，然后氯酸钾在二氧化锰的催化下分解为氯化钾和氧气，故b 为高锰酸钾，在t 1时刻，高锰酸钾开始分解，t 2时刻，氯酸钾开始分解，故a 为氯酸钾，c 为氧气，符合题意；B 、在一定量硝酸银和硝酸铜的混合溶液中加入铁粉，铁粉先和硝酸银反应，332=Fe Fe+2AgNO NO ()+2Ag ，56份铁生成216份银，固体质量增加，溶液质量减小，硝酸根的质量不变，故硝酸根的质量分数逐渐增大，待硝酸银完全反应后，铁和硝酸铜反应3232=Fe+Cu(NO )Fe(NO )+Cu ，56份铁生成64份铜，固体质量增加，溶液质量减小，硝酸根的质量不变，故硝酸根质量分数逐渐增大，待硝酸铜完全反应后，硝酸根溶质质量分数不变，不符合题意；C 、由图可知，X 、Y 质量不断减小，则X 、Y 为反应物，Z 的质量逐渐增加，则Z 为生成物，t 1时，该反应恰好完全反应，X 减小量为9，Y 减小量为3，则Z 的增加量为12，X ∶Y ∶Z=3∶1∶4，但是由于不知道X 、Y 、Z 的相对分子质量，无法确定该反应的化学方程式，不符合题意。

2020年温州市第二实验中学高三生物二模试卷及答案

2020年温州市第二实验中学高三生物二模试卷及答案一、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. 下列关于细胞生命历程中分化、衰老、凋亡、癌变的叙述，错误的是A. 细胞分化、衰老和癌变都会导致细胞形态、结构和功能发生变化B. 细胞分化使细胞功能趋向专门化，主要原因是遗传物质发生了改变C. 被HIV侵染的细胞被清除属于细胞凋亡D. 衰老的细胞体积变小，核体积变大，代谢减弱2. 下列关于植物生命活动调节的叙述，错误的是（）A.植物无神经系统和免疫系统，因此植物正常生命活动是通过激素调节实现的B.激素的产生和分布是基因表达的结果，也受到环境的影响C.光、重力和温度等因素对植物生长发育也具有调节作用D.环境变化对植物的影响表现在植物的个体水平，调控基因表达及激素发生、分布，最终表现在器官和个体水平上3. 在对照实验中，控制自变量可以采用“加法原理”或“减法原理”。

与常态相比，人为增加某种影响因素的称为“加法原理”；与常态相比，人为去除某种影响因素的称为“减法原理”。

下列相关说法错误的是（）A. 验证Mg是植物必需元素的实验，利用了“加法原理”B. “比较过氧化氢在不同条件下的分解”实验，利用了“加法原理”C. 验证“光是光合作用的条件”利用了“减法原理”D. 沃泰默切除通向狗小肠的神经，用稀盐酸刺激小肠探究胰液分泌的实验，利用了“减法原理”4. 下列叙述中，能说明“核基因和染色体行为存在着平行关系”的是()①非等位基因随非同源染色体的自由组合而组合①体细胞中成对的同源染色体来源相同，而基因一个来自父方，一个来自母方①二倍体生物形成配子时基因和染色体数目均减半①Aa杂合子发生染色体缺失后，不可能会表现出a基因的性状A. ①①B. ①①C. ①①D. ①①5. 下列各项表示植物细胞结构与其主要组成成分的对应关系，错误的是（）A. 染色体-DNAB. 细胞膜-磷脂C. 细胞骨架-多糖D. 细胞壁-纤维素6. 科学家在细胞膜成分和结构的探索过程中，运用了假说，学习了“细胞膜的流动镶嵌模型”一节后，某同学作如下比喻，错误的是()A. 把静态的三维结构比作“三明治”或“三合板”B. 细胞膜流动镶嵌模型比作“枣糕”，如图1所示C. 细胞膜流动镶嵌模型比作“正在煮着的粥”，如图2所示D. 细胞膜外表面的糖蛋白比作“信号接收塔”7. 当细胞新陈代谢旺盛、生长迅速时，结合水与自由水的比值将( )A. 保持不变B. 降低C. 升高D. 不能确定8. 理论上，下列关于人类单基因遗传病的叙述，正确的是（）A. 常染色体隐性遗传病在男性中的发病率等于该病致病基因的基因频率B. 常染色体显性遗传病在女性中的发病率等于该病致病基因的基因频率C.X染色体显性遗传病在女性中的发病率等于该病致病基因的基因频率D.X染色体隐性遗传病在男性中的发病率等于该病致病基因的基因频率9. 交感神经和副交感神经是神经系统的重要组成部分，下列有关它们的叙述正确的是（）A. 它们包括传入神经与传出神经B. 它们都属于中枢神经系统中的自主神经C. 它们通常共同调节同一内脏器官，且作用一般相反D. 交感神经使内脏器官的活动加强，副交感神经使内脏器官的活动减弱10. 在细胞有丝分裂过程中，细胞核内以下各组概念之间的数量关系一定不相等的是A. 染色体数目与着丝粒数目B. 染色体数目与染色单体数目C.DNA分子数目与染色单体数目D. 染色体数目与DNA分子数目11. 下列关于人体内胰岛素和胰高血糖素的叙述，错误的是（）A.胰岛素在胰岛B细胞中合成，胰高血糖素在胰岛A细胞中合成B.胰岛素是唯一降低血糖的激素，胰高血糖素不是唯一升高血糖的激素C.胰岛素激活胰岛素受体后，葡萄糖通过胰岛素受体进入细胞内D.胰岛素分泌不足可能导致糖尿病的发生12. 下列关于基因与性状之间关系的叙述，不正确的是（）A. 某个基因数目的多少也影响生物的性状B. 基因在染色体上位置转移后，生物性状不受影响C. 一对基因可能通过蛋白质的合成影响另一对基因的表达D. 控制某一性状的基因之间可能存在复等位基因和非等位基因13. 今年年初，一场冠状病毒(目前已知RNA病毒中基因组最大的病毒)引起的疫情在世界各地不断蔓延，使世界各地的人们陷入恐慌。

温州市2020初三化学中考二模试题和答案

温州市2020初三化学中考二模试题和答案一、选择题（培优题较难）1．已知A—H为初中阶段常见的物质，且A、C、G均为常用化肥且C为复合肥，其反应关系如图所示，以下判断一定错误．．的是A．B物质一定是酸B．D物质一定是氧化物C．若H是碱，则A一定是钾肥D．若E的相对分子质量大于F的相对分子质量，则G一定是氮肥【答案】A【解析】初中化学两种物质反应生成三种物质的反应主要有两类，①碳酸盐与酸生成盐、水和二氧化碳，②铵盐与碱反应生成盐、水和氨气，由于A是复合肥，所以应为硝酸钾，D 应为水。

如果B为酸（或碱），则E为二氧化碳（或氨气）；所以H为碱（或酸），F为氨气（或二氧化碳）。

A、B物质可能是酸或是碱，故错误；B、D物质是水，属于氧化物，故正确；C、若H是碱，则B为酸，A为碳酸钾，属于钾肥，故正确；D、若E的相对分子质量大于F的相对分子质量，则E为二氧化碳，F为氨气，所以H是碱，G是氨态氮肥，故正确。

2．某固体混合物由Mg和MgO组成，取该混合物与19. 6%的稀硫酸恰好完全反应（反应后溶液中无晶体析出），所得溶液蒸发82. 2g水后得到固体的质量为24g，则原混合物中氧元素的质量分数为（）A．16%B．20%C．25%D．40%【答案】C【解析】【详解】镁和稀硫酸反应生成硫酸镁和氢气，氧化镁和稀硫酸反应生成硫酸镁和水，所得溶液蒸发82. 2g水后得到的固体是硫酸镁， 24g硫酸镁中，镁元素的质量为：24⨯⨯=，硫酸根的质量=42g-4.8g-19.2g，参加反应的硫酸溶液中硫酸的24g100% 4.8g120质量=9619.2g100%19.6g98÷⨯=，参加反应的硫酸溶液的质量=19.6g19.6%=100g÷；反应生成的水的质量=82.2g –(100g-19.6g)=1.8g；生成的水中氧元素的质量=161.8g100% 1.6g18⨯⨯=，根据质量守恒定律可知，氧化镁中氧元素的质量=反应生成水中氧元素质量=1.6g。

2020年浙江省温州市中考数学二模试卷及解析

2020年浙江省温州市中考二模试卷数学试卷一、选择题（本大题共10小题，共40分） 1. 3的相反数是( )A. 13B. −13C. 3D. −32. 以下由两个全等的30°直角三角板拼成的图形中，属于中心对称图形的是( )A.B.C.D.3. 数据8，9，10，10，11的众数是( )A. 8B. 9C. 10D. 11 4. 六边形的内角和是( )A. 540°B. 720°C. 900°D. 1080°5. 若分式x−2x+3的值为0，则x 的值是( )A. 2B. 0C. −2D. −36. 一个不透明的袋中，装有2个黄球、3个红球和5个白球，它们除颜色外都相同．从袋中任意摸出一个球，是红球的概率是( )A. 12B. 13C. 310D. 357. 如图，一块三角木的侧面是一个直角三角形，已知直角边ℎ=12cm ，a =20cm ，斜边与直角边a 的夹角为θ，则tanθ的值等于( )A. 35B. 34C. 53D. 3√34348. 某校体育器材室有篮球和足球共66个，其中篮球比足球的2倍多3个，设篮球有x个，足球有y 个，根据题意可得方程组( )A. {x +y =66x =2y −3B. {x +y =66x =2y +3C. {x +y =66y =2x −3D. {x +y =66y =2x +39. 如图，点A 是射线y═54x(x ≥0)上一点，过点A 作AB ⊥x 轴于点B ，以AB 为边在其右侧作正方形ABCD ，过点A 的双曲线y =kx 交CD 边于点E ，则DEEC 的值为( )A. 54B. 95C. 2536 D. 110.如图，△ABC是边长为6的等边三角形，点D在边AB上，AD=2，点E是BC上一点，连结DE，将DE绕点D逆时针旋转60°得DF，连结CF，则CF的最小值为()A. 2B. √3C. 2√3−2D. 6−3√3二、填空题（本大题共6小题，共30分）11.分解因式：m2−2m=______．12.一个扇形的圆心角为120°，半径为3，则这个扇形的弧长为______.(结果保留π)13.不等式组{x−1>03x−5≤2的解是______．14.如图，∠ACD是△ABC的外角，CE平分∠ACD，若∠A=50°，∠B=35°，则∠ECD等于______°.x，当0<x<3时，15.已知抛物线y=ax2+6x(a为实数)和直线y=12抛物线位于直线上方，当x>3时，抛物线位于直线下方，则a的值为______．16.如图，在矩形ABCD中，AB=16，AD=9，线段PQ位于边AB上(AP<AQ)，PQ=2，E为PQ中点，以E为顶点在矩形内作直角△EFG，，当GF所在的直线与以CD 其中∠EFG=90°，EF=1，sin∠FEQ═35为直径的圆相切时，AP的长度为______．三、解答题（本大题共8小题，共80分）17.(1)计算：(−3)2−(√2−1)0+√12(2)化简：(2−a)(2+a)+a(a−3)18.如图，△ABC中，点D，E分别是边AB，AC的中点，过点C作CF//AB交DE的延长线于点F，连结BE．(1)求证：四边形BCFD是平行四边形．(2)当AB=BC时，若BD=2，BE=3，求AC的长．19.寒假某天，一数学兴趣小组对当天从市区出发的乘客到动车南站的交通方式进行抽样调查，得到如下统计表：2019年×月×日从市区出发的乘客到动车南站的交通方式的抽样统计表：出行方式S1轻轨BRT出租车其他人数(个)32684060由统计表可知，被调查的总人数为人．(2)根据统计表，绘制得到不完整的扇形统计图如图所示，求图中表示“出租车”的扇形的圆心角度数．(3)若当天从市区到动车南站的乘客约为25000人，请估计其中选择S1轻轨和BRT出行的乘客人数总和．20.如图，已知矩形ABCD是一空旷场地上的小屋示意图，其中AB：AD=2：1.拴住小狗的绳子一端固定在点A处，请根据下面条件分别画出小狗在小屋外最大活动区域．(小狗的大小不计)(1)若拴小狗的绳子长度与AD边长相等，请在图1中画出小狗在屋外可以活动的最大区域；(2)若拴小狗的绳子长度与AB边长相等，请在图2中画出小狗在屋外可以活动的最大区域．21. 已知抛物线y =a(x +m)2+2(m <0)交x 轴于A ，B 两点(A,B 两点不重合)，顶点为M ．(1)当a =−18，点A 的坐标为(1,0)时，求顶点M 的坐标．(2)如图，若N 为抛物线y =−a(x +m)2−2的顶点，依次连结点A ，M ，B ，N 得四边形AMBN ，取边BN 的中点C ，连结MC 交x 轴于点D ，设△ADM 与△BDM 的面积分别为S 1，S 2，求S 1：S 2的值．22. 如图，已知AB 是⊙O 的直径，BC ⊥AB ，CD 切⊙O 于点D ，OC 交⊙O 于点E ，连结AD ，AE ．(1)求证：AE 平分∠DAB ．(2)将△AEO 沿直线OC 翻折得△FEO ，连结BF.若CE═85，cos ∠DAB =59，求BF 的长．23.如图1，某工厂拟建一个矩形仓库ABCD，仓库的一边利用长为12m的一面旧墙，另外三边用30m长的建筑材料围成．(1)设AB的长为xm，矩形ABCD的面积为Sm2．①用含x的代数式表示BC的长，并求出x的取值范围．②求S关于x的函数关系式，及S的最大值．(2)为增大仓库面积，预拆旧墙a米移至另三边，后所有墙面进行统一的修饰．已知该项目修建的相关费用如图2所示，若要使该项目的总费用最少，且仓库面积达到110m2，求此时的总费用及a的值．24.如图，四边形ABCD中，∠B=90°，AD//BC，AD=AC，AB=6，BC=8.点P以每秒5个单位长度由点A沿线段AC运动；同时，线段EF以相同的速度由CD出发沿DA方向平移，与AC交于点Q，连结PE，PF.当点F与点B重合时，停止所有运动，设P运动时间为t秒．(1)求证：△APE≌△CFP．(2)当t<1时，若△PEF为直角三角形，求t的值．(3)作△PEF的外接圆⊙O．①当⊙O只经过线段AC的一个端点时，求t的值．②作点P关于EF的对称点P′，当P′落在CD上时，请直接写出线段CP′的长．答案和解析1.【答案】D【解析】解：3的相反数是：−3．故选：D ．根据相反数的定义即可求解．本题主要考查了绝对值的定义，a 的相反数是−a ． 2.【答案】D【解析】解：A.此图案是轴对称图形，不符合题意； B .此图案不是中心对称图形，不符合题意； C .此图案是轴对称图形，不符合题意； D .此图案是中心对称图形，符合题意；故选：D ．根据中心对称图形的概念求解．此题主要考查了中心对称图形，中心对称图形是要寻找对称中心，旋转180度后两部分重合．3.【答案】C【解析】解：∵数据8，9，10，10，11中10出现了2次，最多， ∴众数为10，故选：C ．根据众数的定义直接写出答案即可．本题考查了众数的定义，解题的关键是了解众数是出现次数最多的数，难度不大． 4.【答案】B【解析】解：由内角和公式可得：(6−2)×180°=720°，故选：B ．多边形内角和定理：n 边形的内角和等于(n −2)×180°(n ≥3，且n 为整数)，据此计算可得．此题主要考查了多边形内角和公式，关键是熟练掌握计算公式：(n −2)⋅180°(n ≥3，且n 为整数)． 5.【答案】A【解析】解：由题意可知：{x −2=0x +3≠0，解得：x =2，故选：A ．根据分式的值为零的条件即可求出答案．本题考查分式的值为零的条件，解题的关键是熟练运用分式的值为零的条件，本题属于基础题型． 6.【答案】C【解析】解：∵一个不透明的袋中，装有2个黄球、3个红球和5个白球中任意摸出一个球有10种等可能结果，其中摸出的球是红球的结果有3种，∴从袋中任意摸出一个球，是红球的概率310；故选：C ．由题意可得，共有10可能的结果，其中从口袋中任意摸出一个球是红球的有2情况，利用概率公式即可求得答案．此题考查了概率公式，明确概率的意义是解答问题的关键，用到的知识点为：概率=所求情况数与总情况数之比． 7.【答案】A【解析】解：∵直角边ℎ=12cm ，a =20cm ，斜边与直角边a 的夹角为θ， ∴tanθ=ℎa=1220=35．故选：A ．根据正切的定义即可求解．考查了解直角三角形的应用−坡度坡角问题，关键是熟练掌握正切函数的定义． 8.【答案】B【解析】解：设篮球有x 个，足球有y 个，依题意，得：{x +y =66x =2y +3．故选：B ．设篮球有x 个，足球有y 个，根据“篮球和足球共66个，篮球比足球的2倍多3个”，即可得出关于x ，y 的二元一次方程组，此题得解．本题考查了由实际问题抽象出二元一次方程组，找准等量关系，正确列出二元一次方程组是解题的关键． 9.【答案】A【解析】解：设点A 的横坐标为m(m >0)，则点B 的坐标为(m,0)，把x =m 代入y =54x 得：y =54m ，则点A 的坐标为：(m,54m)，线段AB 的长度为54m ，点D 的纵坐标为54m ， ∵点A 在反比例函数y =k x 上， ∴k =54m 2，即反比例函数的解析式为：y =5m 24x，∵四边形ABCD 为正方形， ∴四边形的边长为54m ，点C ，点D 和点E 的横坐标为m +54m =94m ，把x =94m 代入y =5m 24x得：y =59m ，即点E的纵坐标为59m，则EC=59m，DE=54m−59m=2536m，DE EC =54，故选：A．设点A的横坐标为m(m>0)，则点B的坐标为(m,0)，把x=m代入y=54x得到点A的坐标，结合正方形的性质，得到点C，点D和点E的横坐标，把点A的坐标代入反比例函数y=kx，得到关于m的k的值，把点E的横坐标代入反比例函数的解析式，得到点E的纵坐标，求出线段DE和线段EC的长度，即可得到答案．本题考查了反比例函数图象上的点的坐标特征和正方形的性质，正确掌握代入法和正方形的性质是解题的关键．10.【答案】B【解析】解：把△CDB绕点D逆时针旋转60°，得到，，所以在BC上，．，，．过点C作时，此时的就是CF最小值的情况．∵等边△CBA底边AB上的高(点C到AB的距离)为3√3，，解得．即CF最小值为√3．故选：B．把△CDB绕点D逆时针旋转60°，得到，过点C作时，此时的就是CF最小值的情况．因为等边△CBA底边AB上的高(点C到AB的距离)为3√3，根据，解得值就是最小值．本题主要考查了等边三角形的性质、旋转的性质，分析出CF垂直AB时CF有最小值是解题的关键．11.【答案】m(m−2)【解析】解：m2−2m=m(m−2)．直接把公因式m提出来即可．本题主要考查提公因式法分解因式，准确找出公因式m是解题的关键．12.【答案】2π【解析】解：根据弧长的公式l=nπr180，得到：l=120π×3180=2π，故答案是：2π．根据弧长的公式l=nπr180进行计算即可．本题考查了弧长的计算，熟记弧长公式是解题的关键．13.【答案】1<x≤73【解析】解：{x−1>0 ①3x−5≤2 ②由①得：x>1；由②得：x≤73，则不等式组的解集为1<x≤73，故答案为1<x≤73．分别求出不等式组中不等式的解集，找出两解集的公共部分即可确定出不等式组的解集．此题考查了解一元一次不等式组，根据口诀：同大取大、同小取小、大小小大中间找、大大小小无解了确定不等式组的解集．14.【答案】42.5【解析】解：∵∠ACD=∠A+∠B=50°+35°=85°，又∵CE平分∠ACD，∴∠ECD=12∠ACD=42.5°，故答案为42.5．利用三角形的外角的性质求出∠ACD即可．本题考查三角形的外角的性质，角平分线的定义等知识，解题的关键是熟练掌握基本知识，属于中考常考题型．15.【答案】−116【解析】解：∵抛物线y=ax2+6x(a为实数)和直线y=12x，当0<x<3时，抛物线位于直线上方，当x>3时，抛物线位于直线下方，∴当x=3时，y=12×3=32，∴抛物线y=ax2+6x(a为实数)经过点(3,32)，∴9a+18=32，解得：a=−116，故答案为：−116．根据抛物线y =ax 2+6x(a 为实数)和直线y =12x ，当0<x <3时，抛物线位于直线上方，当x >3时，抛物线位于直线下方确定抛物线经过点(3,32)，代入二次函数的解析式求得a 的值即可．本题考查了二次函数的性质及函数图象上的坐标特征，解题的关键是确定抛物线经过的点的坐标，难度不大．16.【答案】52【解析】解：设以CD 为直径的圆为⊙O ，与FG 相切于点H ，FG 与直线CD ，AB 分别交于点N ，M ，与AD 交于点K ，连接OH ，则OH ⊥MN ， ∵EF =1，sin ∠FEQ═35， ∴EM =54，∵AB//CD ， ∴∠N =∠KMA ，∵∠N +∠NKD =90°，∠FEQ +∠KMA =90°， ∴∠NKD =∠AKM =∠FEQ ， ∵AB =16，AD =9， ∴OH =8， ∴ON =10，∴DN =ON −OD =10−8=2， ∴DK =83，设AP =x ，∵PE =1，EM =54，∴AM =AP +PE +EM =x +94， ∴AK =43AM =43(x +94)， ∴83+43(x +94)=9，解得x =52．故答案为：52．设以CD 为直径的圆为⊙O ，与FG 相切于点H ，FG 与直线CD ，AB 分别交于点N ，M ，与AD 交于点K ，连接OH ，则OH ⊥MN ，因为EF =1，sin ∠FEQ═35，可得EM =54，证明∠NKD =∠AKM =∠FEQ ，因为AB =16，可得OH =8，ON =10，所以DN =2，得DK =83，设AP =x ，则AM =AP +PE +EM =x +94，AK =43AM =43(x +94)，根据83+43(x +94)=9，即可得出AP 的长．本题考查圆的切线的判定，锐角三角函数定义，方程思想．解题的关键是通过设未知数x ，建立等量关系列出方程求解．17.【答案】解：(1)原式=9−1+2√3=8+2√3；(2)(2−a)(2+a)+a(a −3)=4−a 2+a 2−3a=4−3a ．【解析】(1)先算乘方和开方，再求出答案即可；(2)先算乘法，再合并同类项即可．本题考查了整式的混合运算、零指数幂、二次根式等知识点，能求出每一部分的值是解(1)的关键，能熟练运用整式的运算法则进行化简是解(2)的关键．18.【答案】(1)证明：∵点D ，E 分别是边AB ，AC 的中点，∴DE//BC ．∵CF//AB ，∴四边形BCFD 是平行四边形；(2)解：∵AB =BC ，E 为AC 的中点，∴BE ⊥AC ．∵AB =2DB =4，BE =3，∴AE =√42−32=√7，∴AC =2AE =2√7．【解析】(1)根据三角形的中位线的性质和平行四边形的判定定理即可得到结论；(2)根据等腰三角形的性质和勾股定理即可得到结论．本题考查了平行四边形的判定和性质，三角形中位线定理，勾股定理，解答本题的关键是明确题意，找出所求问题需要的条件，利用数形结合的思想解答．19.【答案】(1)200；(2)图中表示“出租车”的扇形的圆心角度数为360°×40200=72°；(3)估计其中选择S 1轻轨和BRT 出行的乘客人数总和为25000×32+68200=12500(人次)．【解析】解：(1)被调查的总人数为60÷30%=200(人)，故答案为：200；(2)见答案；(3)见答案．【分析】(1)由其他人数及其所占百分比可得总人数；(2)用360°乘以出租车人数占被调查人数的比例即可得；(3)用总人数乘以样本中选择S1轻轨和BRT出行的乘客人数占被调查人数的比例即可得．本题考查扇形统计图、统计表、用样本估计总体，解答本题的关键是明确题意，利用数形结合的思想解答．20.【答案】解：(1)图1中，小狗在屋外可以活动的最大区域如图所示；(2)图2中，小狗在屋外可以活动的最大区域如图所示．【解析】(1)以A为圆心，AD为半径画弧即可解决问题．(2)分别以A，D为圆心，AB，AD为半径画弧即可解决问题．本题考查作图−应用与设计，解题的关键是理解题意，灵活运用所学知识解决问题．21.【答案】解：(1)把a=−18，A(1,0)代入y=a(x+m)2+2得−18(x+m)2+2=0，解得m1=−5，m2=3，∵m<0，∴m=−5，∴顶点M的坐标(5,2)；(2)连接MN交AB于H，如图，∵M(−m,2)，N(−m,−2)，∴M、N点关于x轴对称，∴MH=NH，∵C为BN中点，∴D为△BNM的重心，∴HD：BD=1：2．由抛物线的轴对称性可得AH=BH，∴AD：DB=2：1，∴S1：S2=2．【解析】(1)把a=−18，A(1,0)代入y=a(x+m)2+2得−18(x+m)2+2=0，然后解关于m的方程即可得到顶点M的坐标；(2)连接MN交AB于H，如图，先判断M、N点关于x轴对称得到MH=NH，再证明D 为△BNM的重心，则HD：BD=1：2.于是可判断AD：DB=2：1，然后根据三角形面积公式得到S1：S2=2．本题考查了抛物线与x轴的交点：把求二次函数y=ax2+bx+c(a,b，c是常数，a≠0)与x轴的交点坐标问题转化为解关于x的一元二次方程．也考查了二次函数的性质三角形重心性质．22.【答案】(1)证明：连结OD，如图，∵CD切圆O于点D，∴OD⊥CD，∵BC⊥AB，∴∠ODC=∠OBC=90°，在Rt△ODC和Rt△OBC中{OC=OCOD=OB，∴Rt△ODC≌Rt△OBC(HL)，∴∠DOC=∠BOC，∵∠DAE=12∠DOE，∠BAE=12∠BOE，∴∠DAE=∠BAE，∴AE平分∠DAB；(2)由圆的轴对称性可知，点F在⊙O上．∵∠AOE=∠FOE，而∠DOE=∠BOE，∴∠AOD=∠BOF，∴BF=AD ∵DE⏜=BE⏜，∴∠DAB=∠COB，∴cos∠COB=cos∠DAB=59，在Rt△BOC中，cos∠BOC=OBOC =59，设OB=OE=5x，OC=9x，∴5x+85=9x，解得x=25，∴OB=2，∴AB=4，∵AB是⊙O的直径，∴∠ADB=90°，在Rt△ADB中，cos∠DAB=ADAB =59，∴AD=59×4=209，∴BF=209．【解析】(1)连结OD ，如图，利用切线的性质得OD ⊥CD ，则∠ODC =∠OBC =90°，于是可判断Rt △ODC≌Rt △OBC 得到∠DOC =∠BOC ，再根据圆周角定理得到∠DAE =12∠DOE ，∠BAE =12∠BOE ，所以∠DAE =∠BAE ； (2)证明∠AOD =∠BOF 得到BF =AD ，再证明∠DAB =∠COB 得到cos ∠COB =cos ∠DAB =59，在Rt △BOC 中利用余弦定义可设OB =OE =5x ，OC =9x ，所以5x +85=9x ，求出x 得到OB =2，AB =4，然后在Rt △ADB 中利用余弦定义计算出AD ，从而得到BF 的长．本题考查了切线的性质：圆的切线垂直于经过切点的半径．若出现圆的切线，必连过切点的半径，构造定理图，得出垂直关系．也考查了圆周角定理、折叠的性质和解直角三角形． 23.【答案】解：(1)BC =(30−2x)m ，解{30−2x ≤1230−2x >0得，9≤x <15， ∴x 的取值范围为：9≤x <15；(2)根据题意得，S =x(30−2x)=−2x 2+30x =−2(x −75)2+1125，∵9≤x <15且a =−2<0，∴当x =9时，S 最大=108m 2；(3)由题意得，(9+a)(12−a)=110，解得a 1=1，a 2=2，设总费用为W ，则W =30×500+300a +42×100=300a +19200W 随着a 的增大而增大，∴当a =1时，总费用最少，为19500元．【解析】(1)根据题意列不等式即可得到结论；(2)根据题意得到函数关系式，根据二次函数的性质即可得到结论；(3)根据题意列方程即可得到结论．本题考查了二次函数的应用，一元二次方程的应用，正确的理解题意是解题的关键． 24.【答案】解：(1)证明：∵AD//BC ，EF//CD∴四边形CDEF 是平行四边形，∠EAC =∠ACF∴ED =FC =5t∵∠B =90°，AB =6，BC =8∴AD =AC =√AB 2+BC 2=10∴AE =CP =10−5t在△APE 与△CFP 中，{AP =CF ∠EAP =∠PCF AE =CP∴△APE≌△CFP(SAS)(2)过点P 作PM ⊥AD 于点M ，延长MP 交BC 于N ，∴∠EMP =∠PNF =90°，MN//AB∴∠MEP +∠MPE =90°，四边形ABNM 是矩形，△PNC∽△ABC∴MN =AB =6，PN AB =NC BC =PC AC =10−5t 10∴PN=6−3t，NC=8−4t∴PM=MN−PN=3t，NF=NC−FC=8−9t∵△APE≌△CFP∴PE=PF，∵△EPF为直角三角形∴∠EPF=90°∴∠MPE+∠NPF=90°∴∠MEP=∠NPF在△EMP与△PNF中，{∠EMP=∠PNF ∠MEP=∠NPF PE=PF∴△EMP≌△PNF(AAS)∴PM=NF∴3t=8−9t解得：t=23(3)①(═)当⊙O过点C时(如图2)，连接CE，过点E作EM⊥AC于M．∵PE=PF，∴弧PE=弧PF∴∠PCE=∠PCF∵AD//BC∴∠PCF=∠DAC∴∠PCE=∠DAC，∴CE=AE=10−5t，CM=AM=12AC=5∵cos∠PCM=cos∠PCF∴CMCE =BCAC即510−5t=810解得：t=34(═)当⊙O过点A时(如图3)，可得AF=FC=5t∴cos∠FAP=cos∠PCF∴AMAF =BCAC即55t=810解得：t =54综上所述，t 的值为34和54②过点C 作CH ⊥AD 于H ，连接，交EF 于点G∴G 为和EF 的中点在CD 上，EF//CD∴△PGQ∽∴PQ =CQ =12PC =10−5t 2∵AC =AD∴∠ACD =∠D∴∠AQE =∠ACD =∠D =∠AEQ∵∠AQE =∠CQF ，∠AEQ =∠CFQ∴∠CQF =∠CFQ∴CQ =CF∴10−5t 2=5t 解得：t =23∴CF =103，AE =10−103=203 ∴FQEQ =CF AE =12，即FQ =13EF ∵∠CHD =90°，CH =AB =6，DH =AD −AH =AD −BC =2∴EF =CD =√=√=2√10 ∴FG =12EF =√10，FQ =13EF =2√103∴GQ =FG −FQ =√103【解析】(1)根据运动速度可得两对应边相等，根据AD//BC找到对应角，得证．(2)由(1)得PE=PF，所以∠EPF=90°，过点P作MN⊥AD，构造三垂直模型，易证△EMP≌△PNF，所以PM=NF，用t把PM、NF表达，即列得方程求解．(3)①过点A或过点C作分类讨论，利用点A或点C在圆上时出现的圆周角相等进行角度转换，利用相等角的余弦值作为等量代换列方程求得t；②点P与关于EF对称时，得与EF互相垂直平分，利用相似用t能把所有线段表示出来，根据CF=CQ作为等量关系列方程求得t，再利用求得答案．本题考查了全等三角形的判定和性质，相似三角形的判定和性质，圆周角定理，等腰三角形的性质，锐角三角函数．利用相似的性质用t表示需要的线段，再寻找等量关系列方程求t，是解决这类动点问题的常用做法．。

2020-2021学年温州市实验中学高三语文二模试卷及答案解析

2020-2021学年温州市实验中学高三语文二模试卷及答案解析一、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。

材料一：2017年11月28日，《扩大水资源税改革试点实施办法》正式发布，自12月1日起，我国将目前在河北省开展的水资源税改革试点，扩大至北京、天津、山西、内蒙古、河南、山东、四川、陕西、宁夏9个省区市（以下简称试点省份）。

考虑到试点省份差异较大，改革试点确定了适当授权的原则，根据各地水资源禀赋、取用水类型以及经济社会发展水平不同的状况，在统一税收政策的基础上，适当赋予地方政府确定具体税额等管理权，使各地因地制宜制定相关政策，调动地方积极性。

据悉，此次纳入试点的9个省份，针对其具体的情况和特点，《实施办法》明确了不同水资源状况和取用水类型的征税政策，确定了差异化的最低平均税额标准。

同时增加了跨省水力发电、采矿排水等具体征税规定。

（摘编自2017年11月28日《人民日报》）材料二：水资源税改革的初衷是什么？将会给水资源使用带来什么影响？会不会加重居民用水负担？本报记者采访了有关部门和专家。

财政部税政司司长王建凡介绍，我国水资源分布不均衡，北方尤其华北地区供需矛盾较大，其人均水资源量仅为全国平均的1/4，地下水超采总量及超采面积占全国1/2，是全国超采最为严重的地区。

我国自2016年7月1日起在河北省率先实施水资源税改革试点，由水资源费改征水资源税。

实施一年多来，有效抑制了不合理用水需求。

由于对超采区取用地下水加倍征税，促使河北省许多企业由抽采地下水转为使用地表水。

改革同时倒逼高耗水企业节水，用税收杠杆提高用水成本后，企业自然会调整自己的生产行为，促进节约用水。

通过扩大试点，有利于进一步发挥税收杠杆调节作用，有效抑制不合理用水需求，促进水资源节约保护；同时为全面推开水资源税制度积累经验、创造条件。

在有效促进高耗水行业节约用水的同时，改革试点总体没有增加一般工商业企业和居民正常生产生活用水负担。

2020届浙江省温州实验中学中考数学二模试卷(有解析)

2020届浙江省温州实验中学中考数学二模试卷一、选择题（本大题共10小题，共40.0分）1.下列说法中，正确的是()A. 0是最小的有理数B. 任意一个有理数的绝对值都是正数C. −a是负数D. 0的相反数是它本身2.一个物体的三视图如图所示，其中主视图和左视图都是腰长为3、底边为2的等腰三角形，根据三视图求得这个物体的表面积是()A. 3πB. 4πC. (2√2+1)πD. 5π3.下列运算正确的是()A. x2⋅x3=x6B. a2+a3=a5C. y3÷y=y2D. (−2m2)3=−6m64.某校为了解学生在校一周体育锻炼时间，随机调查了35名学生，调查结果列表如表，则这35名学生在校一周体育锻炼时间的中位数和众数分别为()锻炼时间/ℎ5678人数615104A. 6h，6hB. 6h，15hC. 6.5ℎ，6hD. 6.5ℎ，15h5.代数式14a的值不小于12a+1的值，则a应满足()A. a≤4B. a≥4C. a≤−4D. a≥−46.如图，在⊙O中，弦AB=3.6cm，圆周角∠ACB=30°，则⊙O的直径等于()A. 3.6cmB. 1.8cmC. 5.4cmD. 7.2cm7.如图，为了测量某条河的宽度，现在河边的一岸边任意取一点A，又在河的另一岸边取两点B、C，测得∠α=30°，∠β=45°，量得BC长为80米．如果设河的宽度为x米，那么下列关系式中正确的是()A. xx+80=12B. xx+80=1 C. xx+80=√22D. xx+80=√338.8、已知点(−2,y1)，(−1,y2)，(1,y3)都在直线y=−3x+b上，则y1，y2，y3的值的大小关系是()A. y1>y2>y3B. y1<y2<y3C. y3>y1>y2D. y3<y1<y29.在矩形ABCD中，AB=5，BC=12，AC是对角线，点E在线段BC上，连结AE，将△ABE沿AE翻折，使得点B的对应点F恰好落在AC上，点G在射线CD上，连接EG，将△ECG沿EG翻折，使得点C的对应点H恰好落在EF所在直线，则线段EG的长度为()A. 52√139B. 26√139C. 26√133D. 13√13310.在平面直角坐标系中，将一块直角三角板如图放置，直角顶点与原点O重合，顶点A，B恰好分别落在函数y=−1x (x<0)，y=4x(x>0)的图象上，则sin∠ABO的值为()A. 13B. √33C. √54D. √55二、填空题（本大题共6小题，共30.0分）11.计算：2202022019−22020+(−4)2020⋅(0.25)2019=______．12.一名射击运动员连续射靶10次，其中3次射中10环，5次射中9环，1次射中8环，1次射中7环，则平均每次射中环数为______ 环，这次射击中环数的众数为______ 环，这次射击中环数的中位数是______ ．13.x=______ 时，分式x2−16x+4的值为零．14.如图，四边形ABCD是⊙O的内接正方形，若正方形的面积等于4，则⊙O的面积等于______．15.如图，已知反比例函数y=k的图象过Rt△ABO斜边OB的中点D，与直角边AB相交于点C，x连接AD，OC.若△ABO的周长为4+2√5，AD=2，则△ACO的面积为______．16.如图，△ABC中，点D、E分别在边AB、BC上，DE//AC，若BD=4，DA=2，△ABC的面积为9，则△DBE的面积为______．三、解答题（本大题共8小题，共80.0分）|−(−2019)0．17.计算：(−2)3÷4+|−3218.如图，△ABC中，AC=BC，∠ACB=90°，点D是AB的中点．(1)如图1，求证：CD=BD；(2)如图2，点M是线段AC上一动点，点N在线段BC上，当满足CN+MN=AM时，求∠MDN的度数．(3)如图3，在(2)中当点N在BC的延长线上且满足MN−CN=AM时，(2)中的结果还成立吗？请说明理由．19.为了迎接党的十八大的召开，某校组织了以“党在我心中”为主题的征文比赛，每位学生只能参加一次比赛，比赛成绩只分A、B、C、D四个阶段．随机抽取该校部分学生的征文比赛成绩进行统计分析，并绘制了如下的统计图表：根据表中的信息，解决下列问题：成绩等级A B C D人数60x y10占抽查学生总数的百分比30%50%15%m(1)本次抽查的学生共有______名；(2)表中x、y和m所表示的数分别为：x=______，y=______，m=______；(3)请补全条形统计图．20. 在矩形ABCD中，AB=3，AD=5，E是射线DC上的点，连接AE，将△ADE沿直线AE翻折得△AFE．(1)如图①，点F恰好在BC上，求证：△ABF∽△FCE；(2)如图②，点F在矩形ABCD内，连接CF，若DE=1，求△EFC的面积；(3)若以点E、F、C为顶点的三角形是直角三角形，则DE的长为______．21. 如图，在平面直角坐标系中，抛物线与x轴交于A、B两点(A在B的左侧)，与y轴交于点C(0,4)，顶点为(1,).(1)求抛物线的函数表达式；(2)设抛物线的对称轴与轴交于点D，试在对称轴上找出点P，使△CDP为等腰三角形，请直接写出满足条件的所有点P的坐标．(3)若点E是线段AB上的一个动点(与A、B不重合)，分别连接AC、BC，过点E作EF//AC交线段BC于点F，连接CE，记△CEF的面积为S，S是否存在最大值？若存在，求出S的最大值及此时E点的坐标；若不存在，请说明理由．22. 如图，△ABC中，AB=AC=10，BC=8，AD⊥BC于D，E为AC的中点，EF⊥AC于E，交AD于F，求EF的长度．23. 如图，在菱形ABCD和菱形BEFG中，点A、B、E在同一直线上，G在BC上移动，P是线段DF的中点，连接PG，PC．(1)求∠DBF的大小；(2)证明：DB//PG；(3)若∠BEF=60°，求PG：PC的值．24. 如图，在⊙O中，弦AC、BD相交于点E，AF⊥BD于点F，AE=AB，连接AB、CD．(1)如图1，求证：CD+BD=2DF；(2)如图2，当BD经过圆心O时，连接AO并延长，交⊙O于点G，连BC，求证：∠D=∠DOG；(3)如图3，在(2)的条件下，连接EG、CG，当OF=1，EG=4时，求CG的长．【答案与解析】1.答案：D解析：解：A、0不是最小的有理数，此选项错误；B、0的绝对值还是0，此选项错误；C、−a可能是正数、负数也可能是0，此选项错误；D、0的相反数是它本身，此选项正确；故选：D．A选项根据有理数知识进行判断；B和C选项根据正负数的知识进行判断；D选项根据相反数的知识进行判断．本题主要考查了有理数、相反数和绝对值的知识，熟练掌握概念是学好数学的关键．2.答案：B解析：解：依题意知母线长l=3，底面半径r=1，则由圆锥的底面积为：π×12=π；侧面积公式得S=πrl=π⋅1⋅3=3π．所以表面积为：π+3π=4π，故选：B．由几何体的主视图和左视图都是等腰三角形，俯视图是圆，可以判断这个几何体是圆锥，结合图形可得出母线及底面半径，继而可求出圆锥侧面积．本题主要考查三视图的知识和圆锥侧面面积的计算，学生由于空间想象能力不够，找不到圆锥的底面半径，或者对圆锥的侧面面积公式运用不熟练，易造成错误．3.答案：C解析：解：A、x2⋅x3=x5，故原题计算错误；B、a2和a3不能合并，故原题计算错误；C、y3÷y=y2，故原题计算正确；D、(−2m2)3=−8m6，故原题计算错误；故选：C．根据同底数幂的乘法法则：同底数幂相乘，底数不变，指数相加；合并同类项的法则：把同类项的系数相加，所得结果作为系数，字母和字母的指数不变；同底数幂的除法法则：底数不变，指数相减；积的乘方法则：把每一个因式分别乘方，再把所得的幂相乘分别进行计算即可．此题主要考查了同底数幂的乘除法、合并同类项、积的乘方，关键是掌握各计算法则．4.答案：A解析：解：这组数据的中位数为第18个数据，即中位数为6h；6出现次数最多，众数为6h．故选：A．直接利用中位数和众数的概念求解可得．本题主要考查众数和中位数，解题的关键是掌握众数和中位数的概念．5.答案：C解析：解：根据题意得：14a≥12a+1，解得：a≤−4，故选C．根据题意得出不等式，求出不等式的解集即可．本题考查了解一元一次不等式，能根据题意得出不等式是解此题的关键．6.答案：D解析：试题分析：首先作⊙O的直径AD，连接BD，根据直径所对的圆周角是直角，即可得∠ABD=90°，又由在同圆或等圆中，同弧或等弧所对的圆周角相等，即可得∠D=30°，继而求得答案．作⊙O的直径AD，连接BD，∴∠ABD=90°，∵∠D=∠ACB=30°，AB=3.6cm，∴AD=2AB=7.2cm，∴⊙O的直径为7.2cm．故选D．7.答案：D解析：解：如图，过点A作AD⊥BC于点D，∵∠β=45°，∴AD=CD=x，∵Rt△ABD中，tanα=ADBD，∴tan30°=xx+80=√33．故选D．过点A作AD⊥BC于点D，直接利用已知条件得出AD=CD，再利用tan30°=ADBD，进而得出关系式．此题主要考查了解直角三角形的应用，正确掌握锐角三角函数关系是解题关键．8.答案：A解析：本题考查的是一次函数的性质与图象.先根据直线y=−3x+b判断出函数图象的增减性，再根据各点横坐标的大小进行判断即可．解：∵直线y=−3x+b，k=−3<0，∴y随x的增大而减小，又∵−2<−1<1，∴y1>y2>y3，故选A．9.答案：B解析：解：∵四边形ABCD是矩形，∴∠ABC=90°，且AB=5，BC=12，∴AC=13，∵将△ABE沿AE翻折，∴AF=AB=5，BE=BF，∠AEB=∠AEF，∠ABE=∠AFE=90°，∴CF=AC−AF=8，∵EC2=EF2+CF2，∴EC2=(12−EC)2+64，∴EC=263，∴BE=103，∴AE=√AB2+BE2=√25+1009=5√133，∵将△ECG沿EG翻折，∴∠HEG=∠GEC，∴∠AEG=90°，∴∠AEB+∠GEC=90°，且∠BAE+∠AEB=90°，∴∠BAE=∠GEC，∴cos∠BAE=cos∠GEC，∴ABAE =ECEG，∴5√133=263EG∴EG=26√139，故选：B．由折叠的性质可求AF=AB=5，BE=BF，∠AEB=∠AEF，∠ABE=∠AFE=90°，由勾股定理可求EC的长，由锐角三角函数可求EG的长．本题考查了翻折变换，矩形的性质，勾股定理，锐角三角函数等知识，求EC的长是本题的关键．10.答案：D解析：【试题解析】本题考查了反比例函数的几何意义、相似三角形的性质，将面积比转化为相似比，利用勾股定理可得直角边与斜边的比，求出sin∠ABO的值．过点A、B分别作AD⊥x轴，BE⊥x轴，垂足为D、E，点A，B落在函数y=−1x (x<0)，y=4x(x>0)的图象上，根据反比例函数的几何意义，可得直角三角形的面积；根据题意又可知这两个直角三角形相似，而相似比恰好是直角三角形AOB的两条直角边的比，再利用勾股定理，可得直角边与斜边的比，从而得出答案．解：过点A、B分别作AD⊥x轴，BE⊥x轴，垂足为D、E，。

2020年温州市实验中学高三生物二模试题及答案

2020年温州市实验中学高三生物二模试题及答案一、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. 人的X染色体和Y染色体大小、形态不完全相同，但存在着同源区（Ⅱ）和非同源区（Ⅱ、Ⅱ）（如图所示）。

由此可以推测（）A. Ⅱ片段上有控制男性性别决定的基因B. Ⅱ片段上某基因控制的遗传病，患病率与性别有关C. Ⅱ片段上某基因控制的遗传病，患者全为女性D. Ⅱ片段上某隐性基因控制的遗传病，女性患病率高于男性2. 下列有关细胞中元素和化合物的叙述中正确的是A. 构成糖类和脂质的元素种类相同，血红蛋白含有铁元素B. Mg属于大量元素，缺Mg会影响植物叶肉细胞中叶绿素的合成C. 抗体的功能取决于氨基酸的排列顺序，不受空间结构的影响D. 人剧烈运动过程中，骨骼肌细胞内A TP与ADP的含量难以达到动态平衡3. 如图为中心法则图解。

下列有关的叙述中，错误的是()A.过程a只发生在有丝分裂的间期B.过程b和c为基因的表达，具有选择性C.过程a、b、c、d、e都能发生碱基互补配对D.过程d、e只发生在某些病毒侵染细胞的过程中4. 森林群落中由于老龄树木死亡造成林冠层出现空隙，称为林窗。

研究者调查了某森林中林窗与林下的土壤动物群落，得到如图所示的结果。

据此不能推断出（）A. 在各层次中林窗的土壤动物丰富度均高于林下B. 光照明显影响了土壤动物群落的垂直结构C. 林窗和林下土壤动物种类数随深度的增加而减少D. 林窗和林下不同层次的土壤动物种群密度相同5. 下列有关种群、群落和生态系统的叙述中，正确的是A. 研究能量流动的目的，就是使能量尽可能多地保留在生产者体内B. 在食物十分充足的条件下，社鼠的种群数量不可能呈“S”型增长C. 森林中各种生物的垂直分层现象都由光照条件决定D. 信息传递能够调节种间关系，以维持生态系统的相对稳定6. 对人体的激素、抗体和神经递质这三类物质说法正确的是（）A.都由特定器官分泌B.都与细胞结合发挥作用C.都是大分子物质D.都能和特定物质结合起作用7. 与肌肉注射相比，静脉点滴因能将大剂量药物迅速送到全身细胞而疗效显著。

2020-2021学年温州市实验中学高三英语二模试卷及参考答案

2020-2021学年温州市实验中学高三英语二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APlan Your Visit to the British MuseumWe've made a few changes to ensure you can safely enjoy your visit:How to book tickets·Tickets for the permanent collection can only be hooked online in advance.·To book tickets for exhibitions, visit our exhibition pages. If you want to guarantee your visit to the permanent collection as well as the exhibition on your visit, you will need to book a separate ticket.·We are limiting numbers of people in the museum to ensure there is room for you to safely enjoy your visit. Everyone, including members and volunteers, will therefore need to book a free, timed ticket in advance.Important information about your ticket booking·You can book up to six tickets for people who live in the same family.·We will email yourticket to you, and you will need to show it either printed out or on your device (设备) when you arrive.·Please arrive at the time stated on your ticket-we cannot guarantee admission before or after it.Following the routeWe have created a new one-way route through the museum which will allow you to safely explore world cultures from the Mediterranean to the Middle East and from the Americas to Africa.·View a map of the route (Open in a new window).·Our audio guides (音频指南) are not available. However, youcan pay to download the audio introductions from iTunes (Open in a new window) or Google Play (Open in a new window) to each of the galleries and listen on your own device. Please remember to bring along your own headphones.1.Why does the museum offer timed tickets?A.To earn more money.B.To hire more volunteers.C.To save room for collections.D.To control the number of visitors.2.How can a visitor learn about the new route in advance?A.View an online map.B.Buy a new headphone.C.Buy audio guides from the museum.D.Download video introductions from iTunes.3.Where can you probably find the text?A.In a newspaper.B.In a magazine.C.On a website.D.In a report.BYou run into the grocery store to quickly pick up your item. You grab what you need and head to the front of the store. After quickly sizing up the check-out lines, you choose the one that looks fastest. You chose wrong. People getting in other lines long after you have already checked out and headed to the parking lot. Why does this seem to always happen to you?Well, as it turns out, it's just math that is working against you. A grocery store tries to have enough employees at the checkout lines to get all their customers through with minimum delay. But sometimes, like on a Sunday afternoon, they get super busy. Because most grocery stores don't have the physical space to add more checkout lines, their system becomes overburdened. Some small interruption — a price check, a particularly talkative customer — will have downstream effects, holding up the entire line behind them.If there are three lines at the store, these delays will happen randomly at different registers (收银台). Think about the probability. The chances of your line being that fastest one are only one in three, which means you have a two-thirds chance of not being in the fastest line. So it's not just in your mind: Another line is probably moving faster thanyours.Now, mathematicians have come up with a good solution, which they call queuing theory, to this problem: Just make all customers stand in one long snaking line, called a serpentine line, and serve each person at the front with the next available register. With three registers, this method is about three times faster on average than the more traditional approach. This is what they do at most banks, Trader Joe's, and some fast-food places. With a serpentine line, a long delay at one register won't unfairly punish the people who lined up behind it. Instead, it will slow everyone down a little bit.4. What phenomenon is described in the first paragraph?A. Queuing in a line.B. A shopping experience.C. A rush in the morning.D. Cutting in a line.5. According to the article, what may cause delays in checking out?A. The lack of employees in the grocery store.B. Some unexpected delays of certain customers.C. The increasing items bought by customers.D. A worsening shopping system of the store.6. What is the solution given by mathematicians?A. Employing more workers for checking out.B. Limiting the number of queuing people.C. Making only one line available.D. Always standing in the same line.7. What's the principle behind the queuing theory?A. To pursue the maximum benefit.B. To leave success or failure to luck.C. To avoid the minimum loss.D. To spread the risk equally among everyone.CAt any moment, about half the world’s population is wearing denim（牛仔布）clothes. But few realize tiny bits of denim have been adding up to a surprising amount of pollution in water, as a new study shows.Sam Athey, one of the study’s authors, says, “Even though denim is made of a natural material—cotton, it contains chemicals.” Cotton fibers were treated with many types of chemicals, she notes. Some improve its durability and feel. Others give denim its distinctive blue color1 .Athey and her team washed jeans and found that about 50,000 microfibers came off from each pair per wash. Not all of those fibers make their way into the environment. Wastewater treatment plants catch about 83 to 99 percent ofthem. Catching 99 percent may sound pretty good. But one percent of 50,000 is still 500 fibers per wash. And since every pair of jeans is washed again and again, it still adds up to lots of microfibers entering the water environment.Denim microfibers showed up in sediment（沉淀物）from the Great Lakes. More of these fibers polluted a series of shallow lakesin southern Ontario. They even turned up in sediment from the Arctic Ocean in northern Canada. The team found denim accounted for 12 to 23 percent of microfibers in the sediment. There were other microfibers too. But the team focused on denim because so many people wear jeans.“Everyone wears jeans so they could be our largest input of microfibers into our streams and soils,” Athey says. “An easy way to limit that is by washing our jeans less often.” Athey grew up thinking she should wash her jeans after wearing them every couple of times, but most jean companies recommend washing them no morethan once a month. “The solution is not that you shouldn’t wear jeans,” she says. “We need to buy fewer denim clothes and only wash them when they truly need it.”8. Which of the following is TRUE according to the passage?A. Chemicals are contained in natural cotton.B. Chemicals can make denim color1 ful.C. Chemicals prevent fibers from falling.D. Chemicals can make the life of denim longer.9. What does the underlined word “them” in Paragraph 3 refer to?A. Denim.B. Sediment.C. Microfibers.D. Chemicals.10. What does the author mainly want to tell us through Athey’s words ?A. To avoid wearing jeans.B. To reduce denim consumption.C. To wash jeans more often.D. To limit input in denim production.11. In which section of a magazine might the text be found?A. Science.B. Entertainment.C. Tourism.D. Geography.DWhen the COVID-19 hit and supermarket shelves were empty, Chris Hall and Stefanny Lowey decided they no longer wanted to rely on others for food. The couple, who live on Pender Island in BritishColumbia, Canada, decided to start a year-long challenge where they wouldn't buy a single thing to eat. Instead they would grow, raise or catch everything—right down to sugar, salt and flour. Now, five months in, they say the challenge has changed their lives.Chris, 38, said, “It has always been something that we have wanted to do. We have had a garden and grown vegetables for a long time already. When the COVID-19 hit, it gave us that extra push that we needed to do it. We were both out of work when we started, and with the reality check of grocery stores running out of items, it gave us even more motivation to see if we could look after ourselves.”The pair spent the months before building a house for chickens, ducks and turkey as well as studying as much as possible to figure out where they would get all the things they needed. Chris adds, “We had to learn so many new things like how to grow mushrooms, process our Stevia plants, and harvest salt from the ocean. We spent a lot of time reading and studying online to figure out all the things we were going to need to do.”Now after five months, they both feel its been going well but Chris admits the first few weeks were difficult. “The first three weeks were very challenging as our bodies adjusted to cutting out coffee, wine and sugar all onthe same day,” he says. “After three weeks our energy levels balanced out and our wishes reduced and now we feel great.” Now February has ended. As they come through winter, they feel positive about continuing with this way of living, with their challenge officially ending in August.12. Why did the pair decide to produce foods on their own?A. They were isolated by Pender Island.B. They couldn't afford to buy them because they were out of work.C. They believed it's good for their health.D. They could hardly buy them in shops.13. Which words can be used to describe the couple?A. Rich and generous.B. Helpful and positive.C. Optimistic and self-dependent.D. Motivated and brave.14. What can we learn from the last paragraph?A. Their challenge may last about eleven months in total.B. They were discouraged by the difficulty at first.C. They had difficulty because they wanted more.D. They couldn't adjust their bodies to the hard work after three weeks.15. In which column may you read such a passage?A. Sports.B. Agriculture.C. Lifestyle.D. Business.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年温州市第二实验中学高三英语二模试卷及参考答案

2020年温州市第二实验中学高三英语二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A“Why do I feel cold when I have a fever?” “Why does the sun rise in the east?” I knew the day would come when my little girl Sophie would learn to talk and inevitably (不可避免地) start askingthose questions. The questions themselves weren’t worrying me. I was actually looking forward to seeing where her curiosity would lie.What was bothering (烦恼) me was whether or not I would know the answers. In the age of the smartphone, this may seem like a silly worry. The answers to almost everything would be just one Google away.Still, I struggled with how I was going to prepare to become an all-knowing mother. Then one day, it struck me: I didn’t need to have all the answers. What a great example I could set if I let my daughter know that I, too, was still learning. And I realized how much more I could learn if I took another look at things I thought I already knew the answer to with the curiosity of a child. My little girl’s mind is a beginner’s mind--- curious, open to new ideas, eager to learn, and not based on knowledge that already exists. I decided that I would deal with her questions with a beginner’s mind, too.Once I decided to become more curious, I started noticing that curiosity was becoming more important in the workplace, too. It seems that leaders don't need to have all the answers, but they do need to be curious.Curious about curiosity, I searched for answers and found Albert Einstein’s famous words, “I have no special talent. I am only passionately (热情地) curious.” We mightquibble overthe view that Einstein had no special talent, but there is one thing for certain---he wouldn't have solved the puzzles of the universe without his passionate curiosity. Then I came across another Einstein quote, “The important thing is not to stop questioning. Curiosity has its own reason or existence.”1. The advantage of having a beginner’s mind is that ________.A. people can learn much faster.B. people won't be afraid to make mistakes.C. people are willing to receive new things.D. people won't be expected to answer all questions.2. What does the example of Einstein’s words show?A. Einstein was passionate about curiosity.B. Einstein’s quotes are very famous.C. Curiosity is of great significance.D. Curiosity is more necessary than talent.3. What does the underlined phrase “quibble over” in the last paragraph probably mean?A. Fight against.B. Argue about.C. Work out.D. Agree withBA team of researchers from several institutions in the UK and one in Estonia has created a type of buoy（浮标）that has proven to be effective at frightening seabirds, thus preventing them from getting caught in gillnets—a type of vertical fishing net that is made of a material that makes it nearly invisible underwater.Every year, hundreds of thousands of seabirds die when they get caught in gillnets. Some estimates suggest that up to a half-million birds are caught in them each year. Over the years, researchers have created devices（装置）to prevent the birds from trying to catch fish near or in gillnets, but those didn't work well.To find a way that would work for all seabirds, the researchers first studied seabirds in a general sense, looking to find things that they would avoid. They noted that seabirds avoided eye contact with other creatures. Then the researchers came up with a simple idea—they put a small pole to a regular buoy and then attached a pair of googly eyes（金鱼眼）to the top of it. They made the eyes big enough so that even birds with poor eyesight, such as geese, would see them. Adding to the effectiveness of the device, waves made the eyes move back and forth. And the wind made the buoy spin very slowly, making sure that birds from every direction would get a good look at the eyes.To test their idea, the researchers selected several sites near gillnets and counted how many birds approached and how many attempted to catch fish near the nets. They then set up their googly-eyed buoys and once again counted birds. Over the course of 62 days, they found the number of birds that tried to catch fish near the gillnets dropped by approximately 25% for a distance of up to 50 meters. They also found that the birds were less likely to fish near where the buoys had been for up to three weeks after they had been removed.4. What is the function of paragraph 2?A. Introducing a new topic to discuss.B. Providing background information.C. Summarizing the previous paragraph.D. Pointing out the main idea of the text.5. Why did the researchers make the googly eyes big?A. To ensure all the seabirds can see them.B. To clearly observe seabirds' eye contact.C. To allow them to survive the strong wind.D. To effectively identify the right direction.6. What does the researchers' test result mainly suggest?A. The new device still needs improvingB. Gillnets are a death valley for seabirds.C. Seabirds hardly catch fish near the nets.D. The googly-eyed buoy proves effective.7. What is the text mainly about?A. A group of researchers interested in seabirds.B. A way to help seabirds catch fish effectively.C. A device keeping seabirds safe from gillnets.D. A googly-eyed buoy guiding seabirds to hunt.CMy school appeared on the news last week because we had made an important change in our local area. Our class had planted a large garden in what was once only a vacant lot. It was a lot of work but it was all worth it. I got blisters(水泡) from digging, and we all got insect bites, too.I learned a lot about gardening and collaboration(合作), and then I learned about the media. Our teacher telephoned the TV station and informed them of what we had accomplished. She spoke with the producer. The producer checked with the directors, but they said there were plenty of stories similar to ours. They wanted to know what was special about our particular garden, since many schools plant them.The teacher explained that, after going on the Internet to learn about the prairie(大草原), we had made a prairie garden. We had gone to a prairie and gotten seeds from the plants, and then we planted them. We did not water the garden, but we did weed it. We decided to let nature water it with rain, since that was how prairies grew in the past. We sent a picture of the garden to the news station. In the picture, the grass was so high that it stood taller than the fourth grade students.As a result, the producer sent a reporter to our school. He interviewed the headmaster and asked him many questions about the garden. After that, they interviewed us, and we explained to them what we had learned through this project.That night, we watched the news, and there we were. The news reporter told our story. It was only two minutes long, but it was us. We were famous. All that work, all those blisters, it was worth it. We knewthatwhen we saw the garden every day, but now we knew that the whole city thought so, too.8. What seemed to be the TV directors’ initial reaction to the garden?A. They were excited.B. They were surprised.C. They were worried.D. They were uninterested.9. What is special about the garden?A. Weeds were allowed to spread naturally.B. The grass grew faster than common grass.C. The seeds came from the plants of a prairie.D. Underground water was used for the plants.10. What does the underlined word “that” refer to in the last paragraph?A. We got blisters on our hands.B. Our hard work was worthwhile.C. The garden would be famous.D. The project would be finished.11. How did the author feel about the project?A. Annoyed.B. Curious.C. Proud.D. Regretful.DThe prevalence of melanoma (黑素瘤) has been rapidly rising around the world for nearly a century. While some of the increase may be due to better detection, researchers also believe it’s because we’re spending more time outdoors in the sun, vacationing to warmer climates during the winter and using tanning beds. That rise is concerning, since melanoma is the most dangerous kind of skin cancer.Most of us know to cover up and apply sunscreen on hot, sunny days, but when fall arrives, we tend to drop those habits. Experts warn that’s a mistake. Though there’s less need for sun protection after summer ends, exposure to UV rays still adds up.What precautions you should take to defend against melanoma during the cooler months depends on where you are in the world. That’s because the further away you are from the equator, the more UV rays weaken in the winter. “In southern England or Canada, the daily dose of UVA on a clear summer day is 6.5 times higher than on a clear winter day,” says Professor Brian Diffey of the British Association of Dermatologists. “People in those countries typically receive only about 5% of their annual UV exposure in the winter months.”But no matter where you are, even during colder, lower risk months, it’s a mistake to put your sun-protection habits on ice. “It’s important to wear sun-screen when there is a lot of glare from the snow,” says Victoria Mar, director of the Victorian Melanoma Service at Alfred Hospital in Melbourne, Australia.Finally, you should monitor your moles(痣). “Early detection of melanoma is vital for successful treatment,” says Diffey. If it’s caught before it spreads to other parts of the body, the patient will have 99 % of chance to survive for five years. If it’s caught late, that can drop to 25%. Warning signs are a mole that’s changing size, shape or colour, or one that’s asymmetrical — sometimes referred to as “ugly duckling” moles. If you have concerns, talkto your doctor.12. What’s the main cause of the rise ofmelanoma?A. The climate change.B. Better detection.C. More exposure to the sun.D. The increase ofskin cancer.13.What’s a mistake according to experts?A. Applying sunscreen in summer.B. Wearing sun-screen when there is snow.C. Using sunscreen during lower risk months.D. Dropping sun-protection habits in winter.14. What can we learn from the last paragraph?A. Prevention is better than cure.B. Health is better than wealth.C. A disease known is half cured.D. When the sun comes in, the doctor comes out.15. What is the best title of the text?A. Detect Melanoma.B. Beware Winter Rays.C. Monitor Your Moles.D. Spend Less Time Outdoors.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年温州市实验中学高三英语第二次联考试题及参考答案

2020年温州市实验中学高三英语第二次联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AReturns & Refund Guarantee（保证；保证书）The “Returns & Refund Guarantee” is a promise provided by sellers for every item they sell on DHgate. com. When you receive an item that was bought and paid for on our site, and you find it is not as described or isof low quality, you can contact the seller to resolve these problems. DHgate will offer additional assistance if the seller is not cooperative.Scope（范围）The following points should not be included in the “Returns & Refund Guarantee”：▲The seller didn't make any promise.▲The seller can provide evidence to prove the items are as described.▲You didn't contact the seller within the promised time.▲You have released the payment to the seller before asking DHgate for help.Sellers are able to set up the following promises：Returning items for any reasonBuyers can return items for a refund within a specific date which has been set up by sellers, such as 3 days, and 7 days from the day when the items are received. The items' receiving date is the date that is indicated on the shipping carrier's official website. Buyers should prepay any return shipping cost, which will be given back to the buyers after the seller receives the items as long as the items are returned in the same exact condition as when they were delivered.Returns or Refunds accepted if the product has quality issuesBuyers can return the items for a refund when they are not as described or possess quality issues by communicating directly with the seller. The seller is responsible for the return shipping cost.Buyers can get a refund and keep the items when the items are not as described or possess quality issues by negotiating directly with sellers.1.Who can get additional assistance from DHgate in the guarantee?A.The buyers in physical stores.B.The buyers on DHgate. com.C.The sellers on DHgate. com.D.Both the buyers and the sellers.2.Which situation is within the scope of the guarantee?A.The seller didn't make any promise.B.The buyer has paid the seller in advance.C.The buyer asked for help within the promised time.D.The seller proves that there is nothing wrong with the item.3.Which of the following is true according to the passage?A.Not all the sellers make promises.B.DHgate sometimes will pay the buyers.C.Sellers should prepay return shipping cost.D.The buyer can't keep the items after getting a refund.BIf you’re looking for a reason to care about tree loss, this summer’s record-breaking heat waves might be it. Trees can lower summer daytime temperatures by as much as 10 degrees Fahrenheit, according to arecent study. But tree cover in US cities is shrinking (缩减). A study published last year by the US Forest Service found that we lost 36 million trees annually from urban and rural communities over a five-year period. “If we continue on this path, cities will become warmer, more polluted and generally unhealthier for inhabitants,” said David Nowak, a senior US Forest Service scientist and co-author of the study. Nowak says there are many reasons why our tree cover is declining, including hurricanes, tornadoes, fires, insects and disease. But the one reason for tree loss that humans can control is sensible development.Nowak says there is a downside to trees too, such as pollen allergy (花粉过敏) or large tailing branches in storms, and people don’t like sweeping leaves. But, he says, there are ways cities and counties can manage trees to help communities thrive (繁荣). Urban forests especially need our help to replace fallen trees. Unlike rural areas, it is very difficult for trees to repopulate themselves in a city environment with so much pavement and asphalt (沥青). “A lot of our native trees can’t actually find a place to drop a seed so they can regenerate,” explains Greg Levine, co-executivedirector of Trees Atlanta. “That’s why the community has to go in and actually plant a tree because the areas just aren’t natural anymore.”Nowak says the first step is caring for the trees on your own property (财产). “We think we pay for our house, and sowe must maintain it. But because we don’t pay for nature, we don’t need to. And that’s not necessarily true.”4. Why does the author mention “trees can lower summer daytime temperatures”?A. To tell the temperatures in summer are high.B. To explain the reason of tree loss.C. To tell trees are helpful.D. To introduce the topic.5. How can humans control tree loss according to Nowak?A. Develop cities in reasonable ways.B. Prevent fires form damaging trees.C. Improve climate to let trees grow.D. Decrease insects in cities.6. Why do forests in cities need our help?A. Because trees don’t grow in a city environment.B. Because native trees don’t drop seeds any more.C. Because trees in urban areas can’t regenerate naturally.D. Because humans want to plant more trees.7. What is the purpose of this passage?A. Describe the importance of trees in cities.B. Appeal people to protect trees in their surroundings.C. Ask people to plant trees with the author.D. Show the number of trees in theUSis declining.CWhat acts of kindness will make us the happiest, and who tends to benefit the most? A newly-published review of decades of kindness research provides some answers.In this paper, researchers analyzed the results from 126 research articles looking at almost 200, 000 participants from around the world. The studies they chose measured well-being in various ways, including both mental and physical health. Some were experiments, where people did a kindness practice to observe its effects, while others just surveyed people about how kind and happy they were.As expected, people who were kind tended to have higher well-being. Lead researcher Bryant Hui wasastoundedthat the relationship wasn't stronger than it was, but he was still encouraged by the results.One thing Hui and his colleagues found was that people who performed random, informal acts of kindness,like bringing a meal to a sad friend, tended to be happier than people who performed more formal acts of kindness, like volunteering in a soup kitchen.The researchers also found that people who were kind tended to be higher in "eudaimonic happiness"(a sense of meaning and purpose in life) more than "hedonic happiness"(a sense of pleasure and comfort). Perhaps this makes sense, given that being kind takes effort, which reduces comfort but could make people feel better about themselves and their abilities, which would provide a sense of meaning.Being kind came with greater eudaimonic happiness for women than for men, too. According to Hui, this could be because, in many cultures, women are expected to be kinder than men; so, they may have more to gain from it. And younger participants experienced more happiness when they were kind than older participants, perhaps for developmental reasons, he says.Hui isn't sure why acting kind might have these different effects on different groups, but he points to theories put forth by researcher Elizabeth Midlarsky: Being kind may make us feel better about ourselves as a person or about the meaning of our lives, help us forget our own troubles and stresses, or help us be more socially-connected with others.8. What does the data in the second paragraph intend to show?A. The recent paper is worthy of being read.B. The recent paper gives convincing results.C. Kindness is always a hot topic of research.D. Kindness is closely linked to one's well-being.9. What does the underlined word "astounded" in paragraph 3 mean?A. Afraid.B. Certain.C. Excited.D. Surprised.10. Which of the following acts of kindness can make one feel happier according to paragraph 4?A. Volunteering in a hospital.B. Cleaning a community.C. Returning a lost item to its owner.D. Collecting donations for the poor.11. What do the researchers find from the paper?A. Being kind has different effects on different groups.B. Eudaimonic happiness makes people feel comfort.C. The younger experienced more happiness than the older.D. Female participants are kinder than male ones.DHumans are the only creature that gets around by standing up and putting one foot in front of the other. Our ability to walk upright has allowed humankind to travel great distances and survive changing climates,environments and landscapes.Countless scientific studies have found that walking is really good for us and this simple act can provide a number of healthimplications, which help people live longer. In fact, a walking routine, if done properly, might be the only exercise people need.How much walking should one aim for? You’ve likely heard we need 10,000 steps a day. That’s about 5 miles. But contrary to popular belief, this recommendation doesn’t come from science. Instead, itis from a 1960s advertising campaign to promote a pedometer (计步器) in Japan. Perhaps because it’s a round number and easy to remember, it stuck.Since the 1960s, researchers have studied the 10,000-steps-a-day standard and have turned up mixed results. Although 10,000 steps is certainly a healthy and worthwhile goal, it’s not fit for all.For instance, a recent Harvard University study involving more than 16,000 senior women found that those who got at least 4,400 steps a day greatly reduced their risk of dying early when compared with less active women. The study also noted that these benefits continued up to 7,500 steps. This 7,500 mark isn’t surprising: It’s similar to common public health recommendations, such as the Centers for Disease Control and Prevention’s recommendation of 150 minutes of moderate (适度的) physical activity a week for adults.12. What does the underlined word “implications” in Paragraph 2 refer to?A. BenefitsB. Problems.C. Habits.D. Manners.13. Where does the 10,000-steps-a-day standard come from?A. A Harvard University study.B. Science research on health.C. A pedometer advertisement.D. Public health recommendation.14. What can we know from the last paragraph?A. 7,500-steps-a-day standard is the best choice for all.B. More than 16,000 old people were involved in the study.C. Those who walk at least 4,400 steps a day won’t die early.D. 150-minute moderate exercise a week for adults is advised.15. What does the author mainly want to tell readers?A. The more you walk a day, the healthier you will be.B. We can benefit from continuous and proper walking.C. Walking upright helps humankind to explore the world.D. Advertisements can always tell us some scientific suggestions .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届温州市第二实验中学高三英语模拟试题及参考答案

2020届温州市第二实验中学高三英语模拟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AEach year, theLas Vegasconsumer electronics show, or CES, presents the latest developments in many areas of technology. The newest products are designed to make our lives easier, fun and more productive.A car with legsOne of this year’s presentations was by South Korean carmaker Hyun-dai. The company introduced a small model of a “ walking car,” which is called Elevate. It has four movable legs that can raise the main part of the vehicle high off the ground. The electric-powered vehicle is designed to be used in search-and-rescue operations during emergencies or natural disasters.Changeable people moverGermany's Mercedes presented an experimental self-driving vehicle that it claims can revolutionize transportation for people and goods. The company says the vehicle, called Vision Urbanetic, will be able lo easily change bodies depending on its desired use. Mercedes says as a ride-sharing vehicle , the futuristic-looking car can seat 12 people.Fully electric HarleyAmerican manufacturer Harley-Davidson showed off its first fully electric motorcycle, called LiveWire. The company says the bike will be able to go 177 kilometers between charges. It can reach 96 kilometers per hour in under3.5 seconds. Although Harley is known for building powerful bikes with huge, loud motors, the LiveWire will be unusually quiet.Personal robotsOne of the new robots, called Temi, is really just a computer tablet on wheels. It is designed to be a personal electronic assistant. It moves around the home and performs commands when spoken to. It can link users to friends through voice or video, connect to video or place orders for food or goods.1. Which do you probably use to search for the injured in an earthquake?A. Elevate.B. Vision Urbanetic.C. LiveWire.D. Temi.2. What is the first fully electric motorcycle produced by Harley-Davidson?A. ElevateB. Hyun-daiC. LiveWire .D. Temi .3. Why are the four products designed?A. To ease traffic jam.B. To help us socialize.C. To improve our life.D. To protect the environment.BThe early life of the green sea turtle (海龟) is full of danger. Only one in 1,000 baby sea turtles survive to adulthood (成年). From its home in the sand, it breaks its egg with an egg tooth. Its mother is not there to help it. Instead, it is greeted by crabs, coyotes,and dogs waiting to eat it for dinner. To survive, the baby turtle must hide in the sand until night. Then, it moves slowly to the sea.The small turtle must swim hard to reach the ocean waters. In the sea, it tries hard to find food. It must also keep itself from being food for fish.As dangerous as the sea turtle’s life is in the natural world, its most dangerous enemies are humans. The rubbish left by humans in the ocean causes problems for the small green sea turtle. A little turtle might eat a piece ofplastic (塑料) in the sea. It might also eat oil on the ocean’s surface. Young turtles also get caught in fishing nets. There are laws against hunting sea turtles. Still, many are hunted, both for their meat and for their shells (壳). All of these dangers must be prevented.Sea turtles that do survive to grow into adulthood go through many changes. For example, adult green sea turtles weigh about 500 pounds. They stop eating jellyfish and other meat and eat only plants. And they may plan a trip to go back home again. A mother sea turtle goes back to the beach where she was born. This is the only place where she will lay eggs. Even if it has been forty years since she was a baby, she always knows her way back home.4. Why do baby turtles move to the sea at night?A. They dislike sunshine.B. They prefer lower temperatures.C. They can find food easily then.D. They need to avoid enemies.5. What does the author think of the young turtles in Paragraph 3?A. Pitiful.B. Careless.C. Interesting.D. Courageous.6. What can we learn about sea turtles?A. They mainly feed on fish and meat.B. They always produce eggs at their birthplaces.C. They can live for around forty years.D. They visit their beach homes several times a year.7. What is the text mainly about?A. The homes of green sea turtles.B. How sea turtles find their food.C. The dangers faced by sea turtles.D. How young turtles become adults.CIn the northern part ofAustin there once lived an honest family by the name of Smothers. The family had John Smothers, his wife and their five-year-old daughter.One night after supper the little girl was ill with a serious stomachache, and John Smothers hurried downtown to get some medicine. He never came back. The mother was very sad over her husband's disappearance, and it was nearly three months before she married again, and moved to San Antonio. The little girl recovered and in time grew up to womanhood. After a few years had rolled around, the little girl also married in time, and she also had a little girl of five years. She still lived in the same house where theydweltwhen her father had left and never returned.By an unbelievable coincidence her little girl was taken with the same stomachache on the same night of the disappearance of John Smothers, who would now have been her grandfather if he had been alive. “I will go downtown and get some medicine for her,” said John Smith(for it was he whom she had married). “No, no, dear John,” cried his wife. “You, too, might disappear forever, and then forget to come back.” So John Smith did not go, and together they sat by the bedside of little Pansy. After a little while Pansy seemed to grow worse, and John Smith again wanted to go for medicine, but his wife would not let him.Just then, the door suddenly opened and an old man with long white hair entered the room. “Hello, here is grandpa,” said Pansy. She had recognized him before any of the others. The old man drew a bottle of medicine from his pocket and gave Pansy a spoonful. She got well immediately. “I was a little late,” said John Smothers, “as I waited for a street car.”8. What happened after John Smothers disappeared?A. His daughter took some medicine.B. His wife left for San Antonio.C. Pansy immediately had a stomachache.D. John Smith went for medicine.9. What does the underlined word “dwelt” in paragraph 2 probably mean?A. Lived.B. Left.C. Returned.D. Married.10. What is the relationship between John Smothersand Pansy?A. Husband and wife.B. Father and daughter.C. Grandfather and granddaughter.D. Father and son.11. How could Pansy's mother feel when she saw John Smothers?A. Worried.B. Sad.C. Uninterested.D. Surprised.DEven plant can run a fever，especially when they're under attack by insects or disease．But unlike human，plants can have their temperature taken from 3，000 feet away straight up．A decade ago，adopting the infrared （红外线）scanning technology developed for military purposes and other satellites，physicist Stephen Paley came up with a quick wayto take the temperature of crops to determine which ones are under stress．The goal was to let farmers precisely（精确的）target pesticide（杀虫剂）spraying rather than rain poison on a whole field，which always includes plants that don't have pest problems．Evenbetter，Paley's Remote Scanning Services Company could detect crop problems before they became visible to the eye．Fixed on a plane flown at 3，000 feet at night，an infrared scanner measured the heat sent out by crops．The data were transformed into a color﹣coded map showing where plants were running "fevers"．Farmers could then spot﹣spray，using 50 to 70 percent less pesticide that they otherwise would．The bad news is that Paley's company closed down in 1984，after only three years．Farmers resisted thenew technology and long﹣term supporters were hard to find．But with the renewed concern about pesticides on produce and refinements（改进）in infrared scanning，Paley hopes to get back into operation．Agriculture experts have no doubt that the technology works．"This technique can be used on 75 percent of agricultural land in the United States，" says George Oerther of Texas A& M，who recently retired from the Department of Agriculture，thinks remote infrared crop scanning could be adopted by the end of the decade．But only if Paley finds the financial support which he failed to obtain 10years ago．12. Plants will give out an increased amount of heat when they are ．A. facing an infrared scannerB. sprayed with pesticidesC. exposed to extreme sun raysD. inpoor physical condition13. In order to apply pesticide spraying precisely，we can use infrared scanning to ．A draw a color1﹣coded mapB evaluate the damage to the cropsC. locate the problem areaD. measure the size of the affected area14. The application of infrared scanning technology to agriculture met with some difficulties of ．A. the lack of official supportB. its high costC. the lack of financial supportD. its failure to help increase production15. Infrared scanning technology may be brought back into operation because of ．A. full support from agricultural expertsB. the forceful promotion by the Department of AgricultureC. the desire of farmers to improve the quality of their produceD. growing concern about the over use of pesticides on crops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届温州市实验中学高三英语第二次联考试题及答案

2020届温州市实验中学高三英语第二次联考试题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AA medical capsule robot is a small,often pill-sized device that can do planned movement inside the body after being swallowed or surgically inserted. Most models use wireless electronics or magnets or a combination of the two to control the movement of the capsule. Such devices have been equipped with cameras to allow observation and diagnosis, with sensors that “feel,” and even with mechanical needles that administer drugs.But in practice, Biomechatronics engineer Pietro Valdastri has found that developing capsule models from scratch (从头开始) is costly, time-consuming and requires advanced skills. “The problem was we had to do them from scratch every time,” said Valdastri in an interview. “And other research groups were redeveloping those same modules from scratch, which didn’t make sense.”Since most of the capsules have the same parts of components: a microprocessor, communication submodules, an energy source, sensors, and actuators (致动器), Valdastri and his team made the modular platform in which the pieceswork in concertand can be interchanged with ease. They also developed a flexible board on which the component parts are snapped in like Legos. The board can be folded to fit the body of the capsule, down to about 14 mm. Additionally, they compiled (编译) a library of components that designers could choose from, enabling hundreds of different combinations. They arranged it all in a free online system. Designers can take the available designs or adapt them to their specific needs.“Instead of redeveloping all the modules from scratch, people with limited technological experience can use our modules to build their own capsule robots in clinical use and focus on their innovation,” Valdastri said.Now, the team has designed a capsule equipped with a surgical clip to stop internal bleeding. Researchers at Scotland’s Royal Infirmary of Edinburg have also expressed interest in using the system to make a crawling capsule that takes images of the colon(结肠). One research group, led by professors at the Institute of Digestive Disease of the Chinese University of HongKong, is making a swimming capsule equipped with a camera that pushes itself through the stomach.One limitation of Valdastri’s system is that it’s only for designing models. Researchers can confirm their hypotheses (假设) and do first design using the platform, but will need to move to a custom approach to develop their capsules further and make them practical for clinical use.1. According to the passage, Valdastri and his team created the platform to ________.A. adopt the latest technologiesB. make their robots dream come trueC. help build specialized capsule robotsD. do preciser observation and diagnosis2. What does the underlined phrase “work in concert” mean in Para.3?A. Perform live.B. Run independently.C. Act in a cooperative way.D. Carry on step by step.3. What can be learnt from the passage?A. Valdastri’s system can’t provide a complete capsule creation.B. The modular platform is more useful than a custom approach.C. The capsules can move in human’s body automatically.D. It costs more to module the capsules on the board.BIn the summer of 2016, I gave a talk at a small conference in northernVirginia. I began by admitting that I’d never had a social-media account; I then outlined arguments for why other peopleshould consider removing social media from their lives. The event organizers uploaded the video of my talk to YouTube. Then it was shared repeatedly on Facebook and Instagram and, eventually, viewed more than five million times. I was both pleased and annoyed by the fact that my anti-social-media talk had found such a large audience on social media.I think of this event as typical of the love-hate relationships many of us have with Facebook, Instagram, and other social-media platforms. On the one hand, we’ve grown cautious about the so-called attention economy, which, in the name of corporate(公司的) profits, destroys social life gradually and offends privacy. But we also benefit from social media and hesitate to break away from it completely. Not long ago, Imet a partner at a large law firm in Washington, D.C., who told me that she keeps Instagram on her phone because she misses her kids when she travels; looking through pictures of them makes her feel better.In recent months, some of the biggest social-media companies, Facebook and Twitter, in particular, have promised various reforms. In March, Mark Zuckerberg announced a plan to move his platform toward private communication protected by end-to-end encryption(端对端加密); later that month, he put forward the establishment of a third-party group to set standards for acceptable content.All of these approaches assume that the reformation of social media will be a complex, lengthy, and gradualprocess. But not everyone sees it that way. Alongside these official responses, a loose collective of developers that calls itself the IndieWeb has been creating another alternative. They are developing their own social-media platforms, which they say will preserve what’s good about social media while getting rid of what’s bad. They hope to rebuild social media according to principles that are less corporate and more humane(人道的).4. Why did the author feel annoyed when his video was spread online?A. His video caused many arguments.B. His video was shared without his permission.C. His talk was opposed by a large amount of people.D. His video’s popularity on social media is against his talk.5. Why does the author mention the story of his partner in paragraph 2?A. To prove that social media has some benefits.B. To advise people to break away from social media.C. To tell the negative effects social media may produce.D. To describe people’s complicated relationships with social media.6. What is the purpose of the reform made by some social-media companies?A. To attract more users.B. To improve network environment.C. To make more profits.D. To provide more convenientservice.7. What does the IndieWeb intend to do?A. Develop new social-media platforms.B. Remove social media from people’s lives.C. Improve the existing social-media principles.D. Help social-media companies to make reformation.CPablo Picasso was born on October25 inMalaga. Spain in 1881. Taking after his father, Picasso shared apassion（热爱）for painting and art. Even though he wasn't the best student in school, Picasso excelled at drawing. Noticing his amazing talent, Picasso's father, an artist, taught him everything he knew. Before long, Picasso could paint and draw much better than his father. With this rich talent, Picasso paid less and less attention to his schoolwork and spent the majority of his day sketching and drawing in notepads and sketchbooks.When he was a little bit older, Picasso moved twice and was accepted into two fine art programs. However, he didn't care very much for the special techniques they taught and often wandered the streets by himselfdrawing the scenes around him. After moving to these two places, Picasso moved back home toBarcelonaand decided that he would develop new techniques of art and painting based on what he saw.Later, Picasso decided to move toParis,France, where he began perfecting his own techniques of painting, drawing and other forms of art. His drawings. paintings, and an included pieces about sadness, poverty, classics and self-portraits. One of his major types of work is calledcubism（立体派），which includes art with all sizes of geometric shapes together on the piece of an. This type of art is very important because no other artists had come up with the idea before. Picasso decided to try something new, and as a result, cubismis widely accepted today as a classic style of art.Picasso inspires us to always be thinking. He tells us to think outside the box and come up with fresh new ideas that can change the world. He surely plays a significant role in the art field.8. What do we know about Picasso as a student at school?A. He hated doing his homework.B. He was very proud of his talent.C. He showed great talent for drawing.D. He was often praised by his teacher.9. What did Picasso's father do when he found Picasso's gift?A. He tried his best to help Picasso.B. He blamed Picasso for his laziness.C. He asked Picasso to finish his work on time.D. He encouraged Picasso to do better at school.10. What was Picasso's attitude towards the special techniques at that time?A. He thought highly of them.B. He took no interest in them.C. He was confused about them.D. He was concerned about them.11. What does the author tell us in the last two paragraphs?A. Picasso has great faith in art.B. Picasso has changed the world a lot.C. Picasso can do anything he wants to.D. Picasso is a highly creative artist.DSome years ago a young man applied to a large United States optical firm for a job as a lens designer. He apologized for lack of training, but on announcing that he owned two copies of the classic Conrady's Applied Optics and Optical Design, one for his office and a second for his bedside table, he was hired on the spot. Perhaps the story will be repeated some day with Buchdahl's Introduction to Hamiltonian Optics as a similar certificate of qualification.Hamiltonian theory describes with powerful generality the overall properties of optical systems considered as ‘black boxes’, although it does not describe the detailed structure needed to construct the systems and achieve these properties. Buchdahl's book is therefore on the subject of geometrical optics, but it is not about how to design lenses. It is, however a compact comprehensive account of the fundamentals of the theory written with the lens designer's needs very much in mind. Every lens designer worth his salt has at some time in his career attempted to apply the broad concepts of Hamiltonian optics to the solutions of practical problems. Success has been sufficiently rare that the theory, as such, has made little direct contribution to techniques for optical instrument design. The failures have been frustrating because of the obvious fundamental power of the theory and because of its conceptual elegance. The indirect effects have been large, however, both in contributing to an understanding of fundamental principles that govern the overall behavior of optical systems and in pointing the way to other, more practical, theoretical approaches.Buchdahl approaches the subject not only as a capable mathematical physicist, but as one who with a knowledge of practical optics has made a significant contribution to geometrical optical theory. Buchdahl's approach has, over the last decade, had a major impact on modern lens design with computers. Thus, he brings to this exposition of Hamiltonian optics a familiarity with practical optics not usually found in authors on this subject.The author claims his book to be non-mathematical, and indeed it might be so viewed by a professional mathematician. From the point of view of many physicists and engineers, it will appear to be quite mathematical. Moreover, this is a tightly written book. The subject matter is developed with precision, and the author expects the reader, at very point, to be master of the preceding exposition.12. Hamiltonian theory met with failures as a result of ______.A. newer finding related to the wave particle nature of lightB. very complicated concepts too difficult to understand by most lens designersC. too much mathematical detail in the theoryD. not enough practical information offered by the theory to allow for use by lens crafters13. The author of this passage implies that Introduction to Hamiltonian Optics is necessary to ______.A. the students who are major in mathematical geometryB. those who want to grasp the basic principles of optical systemsC. the lens designers who look for instructions on practical designsD. those who are interested in physics14. The article points out that the great benefits of Hamiltonian optics have been found is ______.A. indirect ways of learning mathematicsB. a fundamental power within the theoryC. the conceptual elegance of the theoryD. the practical applications of the theory in finding new approaches to old problems15. This passage is probably excerpted from ______.A. a review of a bookB. a chemistry textbookC. an optician's essayD. a general science text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年温州市第二实验中学高三英语模拟试卷及答案解析

2020年温州市第二实验中学高三英语模拟试卷及答案解析第一部分阅读（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AAre you looking for some new and exciting places to take your kids to? Try some of these places.★Visit art museums.They offer a variety of activities to excite your kids' interest. Many offer workshops for making hand-made pieces, traveling exhibits, book signings by children's favorite writer, and even musical performances and other arts.★Head to a natural history museum.This is where kids can discover the past from dinosaur(恐龙) models to rock collections and pictures of stars in the sky. Also, ask what kind of workshops and educational programs are prepared for kids and any special events that are coming up.★Go to a Youtheater.Look for one in your area offering plays for child and family visitors.Pre-show play shops are conducted by area artists and educators where kids can discover the secret about performing arts Puppet(木偶)making and stage make-up are just a couple of the special offerings you might find.★Tryhands-on science.Visit one of the many hands-on science museums aroundthe country.These science play-lands are great fun for kids and grown-ups alike. They'll keep your child mentally and physically active the whole day through while pushing buttons, experimenting, and building. When everyone is tired, enjoy a fun family science show, commonly found in these museums.1.If a child is interested in the universe, he probably will visit _____.A.a YoutheaterB.an art museumC.a hands-on science museumD.a natural history museum2.What does "hands-on science" mean in the last paragraph?A.Science games designed by kids.B.Learning science by doing things.C.A show of kids' science work.D.Reading science books.3.Where does this text probably come from?A.A museum guide.B.A tourist map.C.A science textbook.D.A news report.BSometimes people make history. George Washington became the first president of theUnited Statesandmade history. Sometimes wars make history. The two World Wars are examples. Sometimes nature even becomes part of history. Shaking earthquakes are recorded in history books.Sixteen years ago, nature caused just such a history-making event. In September 2005, Hurricane Katrina came ashore inNew Orleans,Louisiana. The deadly storm floodedNew Orleans. Before Katrina, no other big American city had ever flooded in the history of the country. This natural disaster caused great harm and death.New Orleansis located below sea level. This location places it at great risk. Levees were built to protectNew Orleansfrom the ocean. (A levee is like a wall between the city and the ocean.) When Hurricane Katrina came ashore, water moved over the levees into the city. Flooding made it necessary for everyone to leave the city. Before Katrina, Creole food (a special kind of cooking only inLouisiana) filled the air with delicious smells. The sound of jazz music traveled through the streets. Now the city has to return to its former glory.Before Katrina, ernment had never made everyone leave a city. People inNew Orleanshad to find shelter quickly. Some had to stay at theSuperdomeSportsCenter. Some rode on buses to other towns. Thousands drove their cars to get away from the storm. The roads and shelters filled up fast.The lesson learned from Katrina was that cities must be better prepared for big storms and other terrible disasters caused by nature. Being prepared might have kept more people safe. Hurricane Katrina is one of the history-making events that will be remembered forever. Today, history is still being made that will shape the future.4. What does the author tell us aboutNew Orleans?A. It was built above sea level.B. It had few jazz musicians after Katrina.C. It was the firstU.S.city that had been flooded.D. It created a wholly new way to cook after Katrina.5. What can we say about the levees?A. They were almost useless for fighting Katrina.B. They helped people leaveNew Orleansquickly.C. They made NewOrleansa special American city.D. They should be built to match the size ofNew Orleans.6. What might the author advise city governments to do?A. Put up more shelters in the city.B. Build more levees around the city.C. Teach people how to avoid floods.D. Try to get ready for natural disasters.7. What is the best title for the text?A. Storms are dangerousB. Katrina makes historyC. Floods shapeLouisianaD. History must be rememberedCSurfing 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 the Internet will have a lower productivity than those without.” he said.8. 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.9. 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.10. The underlined word “block” in Paragraph 4 means “________”.A. stopB. organizeC. protectD. separate11. 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.DGuangzhououtbreak linked to strains inIndiaThe gene sequencing of the COVID-19 outbreak inGuangzhou.Guangdongprovince, indicates it is very similar in structure to the mutatedstrains detected inIndia, a senior health official from the city said on Sunday.“And it has the characteristic of quick spread.” Chen Bin, deputy director of the city's health commission, said at a news conference inGuangzhouon Sunday.She urged relevant departments and medical staff to act quickly to block the chain of infection and control the spread of the coronavirus in the southern metropolis.Zhang Zhoubin, deputy director of theGuangzhoucenter for disease control and prevention, said the strain of coronavirus spreads easily.“The virus can be spread through a meal or through a short period of indirect contact,” he said.The city reported five confirmed eases and 21 asymptomatic carriers as of 2 pm Sunday after the first con finned case was detected in the city's Liwan district on May 21, Chen said.To prevent the virus from spreading, the city government tightened its disease control and prevention measures over the weekend. Six communities and housing estates previously designated as low-risk areas were raised to medium-risk ones, Chen said.In addition to asking local residents to get vaccinated, the city has organized nucleic acid testing in Haizhu and Yuexiu districts starting from Sunday. Residents in specific areas of Tianhe, Baiyun and Panyu districts have also been required to take nucleic acid tests to expand the screening of suspected patients and asymptomatic carriers.Liwan previously required all its residents to take nucleic acid tests.As of Saturday, more than 2-25 million residents of the city have had samples collected for nucleic acid tests, Chen said. More than 10,000 medical workers from the entire city have been sent to Liwan to help vaccinate locals against COVID-19 and collect samples for nucleic acid testing.Deng Wenjun, director of circulation section with Guangzhou Supply and Marketing Cooperative, said there are sufficient supplies of food and daily necessities in the medium-risk areas.12. What is the characteristic of the COVID-19 which broke out inGuangzhou?A. It disappears quickly.B. It spreads fast.C. It has a lot to do with temperature.D. It has the same nature as the seasonal flu.13. Which district have residents who have not been required to take nucleic acid tests?A. Tianhe.B. Haizhu.C. Panyu.D. Zengcheng.14. Which of the following statements is TRUE?A. The virus can hardly be spread through a short period of indirect contact.B. There are 21 symptomatic carriers in the Liwan district as of 2 pm Sunday.C. All the people living in Liwan district arc previously asked to take nucleic acid tests.D. Supplies of food and daily necessities in the medium-risk areas arc still not enough.15. Where can you probably find this article?A. On a news website.B. In a fashion magazine.C. In a history book.D. In a travel journal.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。

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