高考英语一轮复习Unit3Lifeinthefuture练习含解析新人教版必修5
Unit 3 Life in the futureⅠ.阅读理解When you’re out with a friend and take a photo of yourselves,do you know that you are also creating a work of art? Or that you are competing with Vincent Van Gogh himself? Probably not.Your idea might be to show off your selfie(自拍)on WeChat or QQ,but you probably don’t think of the Internet as a gallery or of yourself as an artist.But the manager of London’s Saatchi Gallery,Nigel Hurst,thinks that the casual pictures we take of ourselves do have something in common with self-portraits by the great masters.In support of the idea,the Saatchi Gallery has a new exhibition called From Selfie to Self-Expression,which is running now until May 30.It features well-known self-portraits from artists including those drawn by Dutch painters Van Gogh and Rembrandt.It also has selfies on show,which include one taken by US celebrity Kim Kardashian and another of former US President Barack Obama with former UK Prime Minister David Cameron,according to the BBC.The gallery is even encouraging visitors to add their own selfies to the show.Hurst is perhaps not being 100 percent serious.He isn’t claiming that a snap you take of yourself in your favorite restaurant can be compared with a self-image painted by Van Gogh.But he does make a serious point.Once upon a time,it was only artists who could make images of themselves.They were the only ones,as Hurst told The Guardian,who “had the skills,materials and tools to create self-portraits.”Today,however,we “all have that ability through our smartphones.”And Hurst described the smartphone selfie as an example of “a transform in society using technology as a means of self-expression”.He told The Guardian:“The selfie generation is becoming the self-expression generation as each of us seeks to explore and share our inner creativity through the one artistic tool to which we all have access,the smartphone.”1.What is the new exhibition intended to express?A.A celebrity’s selfie is more likely to become a masterpiece.B.Selfies are a better way to express oneself than self-portraits.C.Smartphones have changed the way people understand the world.D.Selfies have something in common with great artists’ self-portraits.2.What does the underlined word “those” in Paragraph 3 refer to?A.Self-portraits.B.Selfies.C.Artists.D.Visitors.3.Which of the following would Nigel Hurst agree with?A.Selfies help us master the skills used by earlier artists.B.Every snap you take of yourself can have artistic value.C.Self-portraits of great masters have lost their attraction.D.Selfies offer people a chance to explore their creativity.4.What is the writer’s purpose in writing this article?A.To remind readers of works from some famous artists.B.To explain the reason for people enjoying taking selfies.C.To introduce a new exhibition of selfies and self-portraits.D.To make a comparison between selfies and self-portraits.语篇解读:科技的发展、智能手机的普及已经使得自拍成为一种艺术。
答案及剖析:1.D 细节理解题。
根据第二段中的the casual pictures we take of ourselves do have something in common with self-portraits by the great masters.可知,自拍与艺术大师的自画像有相同之处,因此D项是正确答案。
2.A 代词指代题。
those指代前文提到的“艺术家的自画像”,因此A项是正确答案。
3.D 推理判断题。
根据文章最后一句可知,自拍的一代人正成为自我表达的一代人,因为我们可以通过智能手机来探索和分享我们内在的创造力。
因此D项是正确答案。
4.C 主旨大意题。
纵观原文,作者主要介绍了一个名为From Selfie to Self-Expression 的展览,并借此引出了对于手机自拍现象的反思。
Ⅱ.七选五People need homes:children assume their parents’ place as home;boarders call school “home” on weekdays;married couples work together to build new homes;and travelers...have no place to call “home”,at least for a few nights.1. ?Don’t they have the right to own a home?Of course they do.Some regular travelers take their own belongings:like bed sheets,pillowcases and family photos to make them feel like home no matter where they are;some stay for long periods in the same hotel and as a result become very familiar with service and attendants;others may simply put some flowers by the hotel window to make things more homely.2. !And how about maintaining relationships while in traveling?3. ;some send letters and postcards,or even photos;others may just call and say hi,just to let their friends know that they’re still alive and well.4. .Making friends on the way helps travelers feel more or less at home.Backpackers in youth hostels may become very good friends,even closer than siblings.Nowadays,fewer people are working in their local towns,so how do they develop a sense of belonging?5. .Wherever we are,with just a little bit of effort and imagination,we can make the place we stay “home”.A.Home is the harbor for travelersB.People find ways to keep in touchC.Do all people have a comfortable homeD.Some keep contact with their friends via InternetE.So how about people who have to travel for extended periods of timeF.Whenever we step out of our local boundaries,there is always another “home”waiting to be foundG.Furthermore,driving a camping car during one’s travels and sleeping in the vehicle at night is just like home—only mobile答案:1-5 EGDBFⅢ.完形填空It is widely believed that the circumstances turn men into beasts.But that is not always the 1 because deep down 2 an inner conscience which knows to separate right from wrong.The recent 3 narrating a story of an honest old poor man will 4 your faith in humanity 5 .The old man who lived on roads 6 a total of $90,000 in cash to the owner.The person has lost the money in a hurry after 7 from Durgesh bank.This story has been 8 and shared by many onFacebook,glorifying the deed of 9 .This particular incident 10 like this—a man from Isanagar withdrew money from Durgesh bank.He 11 kept the money in the backseat of his car 12 the money fell on the road.The man noticing the 13 of cash immediately decided to register in the local police station. 14 ,the money was found by an aged man who 15 running away came to the police with it without any delay.The police 16 took the honest old man to the government office where he was 17 with 700 dollars and a pair of new shoes.It is nice to see good work done by all the people 18 .The man who lost his money will always 19 this act of kindness while the rewarding by government shows that a good act is never 20 in vain.1.A.case B.reason C.chance D.point2.A.leaves B.lies C.produces D.accumulates3.A.incident B.adventure C.fiction D.drama4.A.destroy B.question C.restore D.reduce5.A.once and for all B.never again C.once again D.once in a while6.A.returned B.lent C.donated D.reported7.A.resigning B.withdrawing C.escaping D.stealing8.A.printed B.advertised C.played D.circulated9.A.sacrifice B.bravery C.loyalty D.honesty10.A.goes B.ends C.starts es11.A.carelessly B.nervously C.safely D.desperately12.A.after B.but C.when D.since13.A.sign B.amount C.secret D.absence14.A.Therefore B.Otherwise C.Meanwhile D.Besides15.A.in spite of B.instead of C.in favor of D.ahead of16.A.in charge B.at risk C.in doubt D.off duty17.A.equipped B.faced C.rewarded D.charged18.A.established B.involved C.elected D.available19.A.inspire B.ignore C.remember D.meet20.A.praised B.gone C.encouraged D.covered语篇解读:本文讲述了一个老人因其善举获得回报的故事。
高考英语一轮复习练习题Unit3Lifeinthefuture含解析新人教版必修520180922189
Life in the future李仕才一、阅读理解阅读下面短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
Plastic-Eating WormsHumans produce more than 300 million tons of plastic every year. Almost half of that winds up in landfills(垃圾填埋场), and up to 12 million tons pollute the oceans. So far there is no effective way to get rid of it, but a new study suggests an answer may lie in the stomachs of some hungry worms.Researchers in Spain and England recently found that the worms of the greater wax moth can break down polyethylene, which accounts for 40% of plastics. The team left 100 wax worms on a commercial polyethylene shopping bag for 12 hours, and the worms consumed and broke down about 92 milligrams, or almost 3% of it. To confirm that the worms’ chewing alone was not responsible for the polye thylene breakdown, the researchers made some worms into paste(糊状物) and applied it to plastic films.14 hours later the films had lost 13% of their mass — apparently broken down by enzymes (酶) from the worms’ stomachs. Their findings were published in Current Biology in 2017.Federica Bertocchini, co-author of the study, says the worms’ ability to break down their everyday food — beeswax — also allows them to break down plastic. ＂Wax is a complex mixture, but the basic bond in polyethylene, the carbon-carbon bond, is there as well, ＂she explains, ＂The wax worm evolved a method or system to break this bond. ＂Jennifer DeBruyn, a microbiologist at the University of Tennessee, who was not involved in the study, says it is not surprising that such worms can break down polyethylene. But compared with previous studies, she finds the speed of breaking down in this one exciting. The next step, DeBruyn says, will be to identify the causeof the breakdown. Is it an enzyme produced by the worm itself or by its gut microbes(肠道微生物)?Bertocchini agrees and hopes her team’s findings might one day help employ the enzyme to break down plastics in landfills. But she expects using the chemical in some kind of industrial process — not simply ＂millions of worms thrown on top of the plastic. ＂1. What can we learn about the worms in the study?A. They take plastics as their everyday food.B. They are newly evolved creatures.C. They can consume plastics.D. They wind up in landfills.2. According to Jennifer DeBruyn, the next step of the study is to .A. identify other means of the breakdownB. find out the source of the enzymeC. confirm the research findingsD. increase the breakdown speed3. It can be inferred from the last paragraph that the chemical might .A. help to raise wormsB. help make plastic bagsC. be used to clean the oceansD. be produced in factories in future4. What is the main purpose of the passage?A. To explain a study method on worms.B. To introduce the diet of a special worm.C. To present a way to break down plastics.D. To propose new means to keep eco-balance.【文章大意】本文为说明文。
高考英语一轮复习 unit 3 《life in the future》重点梳理现题解析 新人教版必修5
必修5Unit 3 Life in the future要点梳理高效梳理·知识备考●重点单词1．impression n．印象；感想；印记→impress v．给某人深刻印象→impressive adj.给人深刻印象的2．constant adj.时常发生的；连续不断的→constantly adv.不断地3．previous adj.在前的；早先的4．guide n．指导；向导；导游 vt.指引；指导5．surrounding n．周围的事物；环境 adj.周围的→surround vt.围绕6．tolerate vt.容忍；忍受7．lack vi. & vt.缺乏；没有 n．缺乏；短缺的东西8．adjustment n．调整；调节→adjust vt.调整；使适应9．press vi. & vt.按；压；逼迫n.按；压；印刷；新闻→pressure n．压力10．fasten vt.系牢；扎牢11．switch n．开关；转换 vt.转换12．optimistic adj.乐观(主义)的→pessimistic(反义词)13．desert n．沙漠；荒原14．typist n．打字员→typewriter n．打字机15．instant n．瞬间；片刻 adj.立即的；立刻的→instantly adv.马上16．greedy adj.贪吃的；贪婪的；贪心的17．representative n．代表；典型人物 adj.典型的；有代表性的→represent v．代表18．settlement n．定居；解决→settle v．定居；解决→settler n．定居者●重点短语1．take up拿起；接受；开始；继续2．be back on one’s feet (困境后)恢复；完全复原3．lose sight of看不见4．sweep up打扫；横扫5．slide into (快捷而悄声地)移动；溜进……6．speed up加速7．as a result 结果8．be similar to... 与……相似9．in all directions 向四面八方10．show...around... 带领某人参观●重点句型1．At first my new surroundings were difficult to tolerate.起初，我的新环境很难忍受。
高考英语一轮巩固达标练题Unit3Lifeinthefuture含解析新人教版必修50.doc
Life in the future李仕才一、阅读理解。
The story of Sir Nicholas Winton is the one that you would imagine could only happen on the silver screen. Sir Nicholas Winton was a British man who went to heroic efforts, potentially putting himself at risk, during World War II. Sir Winton was responsible for ensuring the safety of six hundred and sixty-nine Jewish children by aiding their escape from countries occupied by Nazis. Finally, the Jewish children were brought to England where he worked to make sure families in his native country would help the kids by taking them into their homes.Recently, this unbelievable story has again been making the rounds on the Internet, particularly after a rerun of the BBC show called “That’s Life”, which featured Sir Winton. People around the world were moved at the details of the story, with saying it to be the best story they’ve ever seen.Sir Winton kept his entire plan completely secret, even his wife had no idea about his planning until fifty years later. After the war, years passed and many people remained in the dark about Sir Winton’s extraordinary achievement. Some fifty years later, his wife Greta was searching in their house and discovered a Winton’s notebook which documented the names of all the children. She worked with BBC and they produced a TV episode (插曲) of their program “That’s Life” that served as an honor for Sir Winton’s work.In 2003, Sir Winton was knighted by the Queen of England for his work. He also was even nominated for a Nobel Peace Prize. He also had a small planet named after him by Czech astronomers. Sir Winton died peacefully in his sleep at the old age of one hundred and six, in 2015. Leaders around the world paid tribute (悼念). Israel’s ambassador to the United Kingdom, Daniel Taub, said, “He was a her o of our time, having saved 669 Jewish children from Nazis. His story, as a point of light in a period ofdarkness, will forever be remembered.”1.What happened to the 669 Jewish children?A. They were killed by Nazis.B. They returned to their own homes.C. They fled to their native countries.D. They were raised by English families.2.What made Winton’s story spread widely?A. People’s chatting online.B. The program “That’s Life”.C. His wife’s promotion.D. Praises from some leaders.3.Which of t he following can replace the underlined expression “remained in the dark’, in Paragraph 3?A. felt doubtfulB. remained movedC. knew nothingD. criticized something4.What do we know about Winton?A. He was born in 1909.B. Nazis tried to arrest him.C. He named a small planet.D. Many children paid tribute to him.【文章大意】文章主要讲述Sir Nicholas Winton在纳粹期间帮助669个犹太孩子逃到英国的故事。
高考英语一轮复习 Unit 3 Life in the future单元知识(含解析)新人教版必修5
Unit 3 Life in the future1 aspect n．方面；层面【教材原文】(Page 17)Below are some of the main aspects of life today.下面是当今生活的主要方面。
【常考短语】from every aspect 从各个方面in all (its) aspects 全面地☛Eastern culture can play a positive role in this aspect.东方文化在这方面会起积极作用。
☛He gave us some explanation for the question from every aspect.他从各个方面就这个问题给了我们一些解释。
【跟踪典例】He sold me the car at a cheap price and included the radio ________. A. in good relation B. from good aspectC. for good measureD. in good spirits【参考答案】C2 impression n.印象；感想；印记【教材原文】(Page 17)FIRST IMPRESSIONS 第一印象【常考短语】make/ leave an impression on sb. 给某人留下印象be under the impression that... 觉得；以为make no impression on 对……无影响/效果give sb. a favourable impression给某人以好的印象☛The new teacher made/left a good impression on the students.新教师给学生留下了一个好印象。
【知识拓展】其动词形式impress的用法：impress 作＂使（某人）印象深刻＂时，常用结构有：impress sth. on/upon sb./ impress sb. with sth. 给……留下深刻的印象；使铭记。
高考英语一轮 Unit 3 Life in the future基础训练A、B卷(含解析) 新人教版
高考英语一轮 Unit 3 Life in the future基础训练A、B卷（含解析）新人教版Unit 3 Life in the futureⅠ.单项填空1．They________ two free tickets to Canada，otherwise they’d never have been able to afford to go.A．had got B．got C．have got D．get2．With his wise thoughts about ______nature and the world，Confucius is a great thinker in______history of China.A．/；the B．the；the C．/；/ D．the；/3．________ I saw him，I knew he was the very man that the police were looking for.Which of the following is WRONG？A．The instant B．The moment C．Immediately D．Instant4．Ladies and gentlemen，please switch________ your mobile phones！The plane is taking off.A．over B．on C．to D．off5．—How much do I owe you for lunch?—________.It’s nothing.A．You’re welcome B．Forget itC．With pleasure D．That’s right6．________ the guidance of a professor，I finished my graduation paper ahead of time.A．After B．With C．Under D．In7．Though________money，his parents managed to send him to university.A．lacked B．lacking of C．lacking D．lacked in 8．Linda worked for the Minnesota Manufacturing and Mining Company，________as 3M.A．knowing B．known C．being known D．to be known 9．The business of the company was growing so fast that the manager had to________more workers.A．take up B．take on C．take in D．turn down10．The Internet is widelyused，which________ the development of English.A．speeds up B．takes over C．gets across D．turns to11．________ in her most beautiful skirt，the girl tried to get herself________ at the party.A．Dressed；noticed B．Dressing；noticedC．Dressed；noticing D．Dressing；being noticed12．He refuses to spend time with us or do________we tell him.A．if B．as if C．as D．that13．________of the terrible storm，they set sail again.A．Though B．Because C．As D．Regardless 14．________there is enough food in the world for everybody，not everybody can afford to buy it.A．While B．Even if C．Unless D．When15．I remember the story as though I________.A．just read it B．have just read itC．had just read it D．were just reading it1.B2.A3.D4.D5.B6.C7.C8.B9.B 10.A11.A 12.C 13.D 14.A 15.C【2012海淀期末】More Than I Had Dreamed OfFrom the time I was seven, I had a dream of becoming a member of the Students Union．I always 1 my school leaders for taking responsibility for all of us．So I dreamed of being a leader．Years flew by, and soon I was able to participate in the elections, 2 I would win．But the reality struck that I hadn't had a chance．I wasn't pretty．Girls across the school hardly knew me．I just did not have what it 3 to win a school election．I was 4 ．As I cried in my room that evening, I 5 took a deep breath and decided I wouldn't stop dreaming．I decided that I would 6 for elections again in my final year at school—and I would win．I recognized that my 7 had a lot of things in their favor．What were the 8 that would work in my favor? I had good grades, and I was friendly and helpful．And my biggest 9 was the faith I had．I would not allow my 10 appearance to hold me back from putting my best foot forward．Thatevening, I 11 my election plans a whole year in advance．I realized that girls would have to get to know me and recognize that I had the ability to 12 them．I loved making friends and I liked being helpful, 13 I decided that perhaps I could use these qualities to work to my advantage．In order to learn how to present a great election 14 , I also attended a course on effective public speaking．The day after the election, when the principal announced I won the second highest number of votes, the students 15 .That joy on the faces of all my friends showed me that my victory was 16 theirs．Suddenly, I realized that I had 17 much more than I had dreamed of．I had made many new friends and had helped people 18 the way．I had won the 19 and love of my school-mates and they knew me as somebody who would stand by them．I was able to put a smile on their faces and 20 their day．1．A．admired B．remembered C．praised D．believed2．A．praying B．planning C．calculating D．judging3．A．assessed B．provided C．meant D．took4．A．concerned B．depressed C．surprised D．confused5．A．gradually B．immediately C．suddenly D．impatiently6．A．pay B．stand C．speak D．wait7．A．competitors B．companions C．enemies D．schoolmates8．A．cases B．methods C．examples D．points9．A．problem B．strength C．worry D．dream10．A．young B．personal C．special D．plain11．A．began B．discussed C．announced D．cancelled12．A．recommend B．accompany C．represent D．support13．A．but B．and C．so D．or14．A．campaign B．speech C．ceremony D．promise15．A．nodded B．gathered C．cheered D．cried16．A．only B．still C．almost D．also17．A．accomplished B．accumulated C．devoted D．developed18．A．by B．to C．in D．along19．A．appointment B．acceptance C．election D．reputation20．A．enrich B．bless C．brighten D．expand【答案与解析】文章介绍了作者为了实现能够进入学生会的梦想，并最终赢得了选举，顺利的进入了学生会，实现了儿时的梦想的同时，也收获了很多。
最新高考英语一轮巩固达标练题Unit3Lifeinthefuture含解析新人教版必修5
Life in the future李仕才一、浏览理解。
The story of Sir Nicholas Winton is the one that you would imagine could only happen on the silver screen. Sir Nicholas Winton was a British man who went to heroic efforts, potentially putting himself at risk, during World War II. Sir Winton was responsible for ensuring the safety of six hundred and sixty-nine Jewish children by aiding their escape from countries occupied by Nazis. Finally, the Jewish children were brought to England where he worked to make sure families in his native country would help the kids by taking them into their homes.Recently, this unbelievable story has again been making the rounds on the Internet, particularly after a rerun of the BBC show called “That’s Life”, which featured Sir Winton. People ar ound the world were moved at the details of the story, with saying it to be the best story they’ve ever seen.Sir Winton kept his entire plan completely secret, even his wife had no idea about his planning until fifty years later. After the war, years passed and many people remained in the dark about Sir Winton’s extraordinary achievement. Some fifty years later, his wife Greta was searching in their house and discovered a Winton’s notebook which documented the names of all the children. She worked with BBC and they produced a TV episode (插曲) of their program “That’s Life” thatserved as an honor for Sir Winton’s work.In 2003, Sir Winton was knighted by the Queen of England for his work. He also was even nominated for a Nobel Peace Prize. He also had a small planet named after him by Czech astronomers. Sir Winton died peacefully in his sleep at the old age of one hundred and six, in 2015. Leaders around the world paid tribute (悼念). Israel’s ambassador to the United Kingdom, Daniel Taub, said, “He was a hero of our time, having saved 669 Jewish children from Nazis. His story, as a point of light in a period of darkness, will forever be remembered.”1.What happened to the 669 Jewish children?A. They were killed by Nazis.B. They returned to their own homes.C. They fled to their native countries.D. They were raised by English families.2.What made Winton’s story spread widely?A. People’s chatting online.B. The program “That’s Life”.C. His wife’s promotion.D. Praises from some leaders.3.Which of the following can replace the underlined expression “remained in the dark’, in Paragraph 3?A. felt doubtfulB. remained movedC. knew nothingD. criticized something4.What do we know about Winton?A. He was born in 1909.B. Nazis tried to arrest him.C. He named a small planet.D. Many children paid tribute to him.【文章大意】文章次要叙说Sir Nicholas Winton在纳粹期间帮助669个犹太孩子逃到英国的故事。
高考英语一轮复习Unit3Lifeinthefuture(讲)(含解析)新人教版必修5
similar
to ...
与
…
…
相
似
9
．
in
all
directions
向
四
面
八
方
10． show... around ... 带领某人参观
1 / 19
经典句 型
（高考 书面表
达必 备）
1 ． At first
my new surroundings
were difficult
to tolerate .
Unit 3
Life in the future
单元知识预览
项目
单词及其词性变化（语法填空必备）
1 ． impression n ．印象；感想；印记→ impress v ．给某人深刻印象→ impressive adj. 给人
深
刻
印
象
的
2 ． constant adj. 时 常 发 生 的 ； 连 续 不 断 的 → constantly adv. 不 断 地
some of them may even be fined.
语言知识精析
重点单词精讲
考点 1． impression n. 印象；感觉；感想；印记
【教材原句】 first impressions 第一印象
【例句研读】 (1) What was your first
impression of London?
泰山的游客络绎不绝。
【归纳拓展】 constantly 经常和进行时连用，表示说话者的一种情感。与之用法相当的词还有 constant adj . 持续的；不断的
always 等。
【即时巩固】 (1) The English language is _______changing. (2) I'm __________telling her to behave herself.
高考英语一轮巩固达标练 Unit 3 Life in the future(含解析)新人教版必修5
Life in the future李仕才一、阅读理解。
Here are our suggestions for keeping busy this week. Dive in!Take to the waves in SouthamptonAlways fancied trying your hand at sailing? Now’s your chance. The Southampton Boat Show has plenty of opportunities for visitors to get out on the water to experience boat sailing, power boating or taking a ride on a RIB ― all for free.Discover an island on the ThamesTo celebrate Totally Thames, a month-long festival is held at various locations across London. We’ve discovered 21 of the river’s most fascinating islands ― all of them with interesting stories to tell. Make the most of it with our map here.Catch great films in BristolOver six days, Encounters Film Festival screens up to 400 films from over 60 different countries. The Bristol festival provides a platform for international filmmakers, and offers a gateway to the likes of the BAFTAs, Oscars and European Film Awards. See here for full details.Get scientific in LondonExperience the latest, best and most challenging science covering all areas of our lives and universe at New Scientist Live at ExCel London. New Scientist Live is a four-day festival full of ideas and discoveries from the team behind the world’s most popular science weekly magazine, featuring four zo nes ― Brain & Body, Technology, Earth and Universe ― as well as talks from experts and over 200 exhibitors.1. Which is the most suitable for sailing lovers?A. Take to the waves in Southampton.B. Discover an island on the Thames.C. Catch great films in Bristol.D. Get scientific in London.2. What is New Scientist Live?A. A science weekly magazine.B. A festival to celebrate great scientists.C. An exhibition to show scientific discoveries.D. A festival where ideas and discoveries are shared.3. Where can you find the text?A. On a noticeboard.B. On a website.C. In a newspaper.D. In a book review.【语篇解读】本文为应用文，主要推介一周活动安排。
【精选高考】2019-2020高考英语一轮复习练习题Unit3Lifeinthefuture(含解析)新人教版必修5
Life in the future李仕才一、阅读理解阅读下面短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。
Plastic-Eating WormsHumans produce more than 300 million tons of plastic every year. Almost half of that winds up in landfills(垃圾填埋场), and up to 12 million tons pollute the oceans. So far there is no effective way to get rid of it, but a new study suggests an answer may lie in the stomachs of some hungry worms.Researchers in Spain and England recently found that the worms of the greater wax moth can break down polyethylene, which accounts for 40% of plastics. The team left 100 wax worms on a commercial polyethylene shopping bag for 12 hours, and the worms consumed and broke down about 92 milligrams, or almost 3% of it. To confirm that the worms’ chewing alone was not responsible for the polye thylene breakdown, the researchers made some worms into paste(糊状物) and applied it to plastic films. 14 hours later the films had lost 13% of their mass — apparently broken down by enzymes (酶) from the worms’ stomachs. Their findings were published in Current Biology in 2017.Federica Bertocchini, co-author of the study, says the worms’ ability to break down their everyday food — beeswax — also allows them to break down plastic. ＂Wax is a complex mixture, but the basic bond in polyethylene, the carbon-carbon bond, is there as well, ＂she explains, ＂The wax worm evolved a method or system to break this bond. ＂Jennifer DeBruyn, a microbiologist at the University of Tennessee, who was not involved in the study, says it is not surprising that such worms can break down polyethylene. But compared with previous studies, she finds the speed of breaking down in this one exciting. The next step, DeBruyn says, will be to identify the cause of the breakdown. Is it an enzyme produced by the worm itself or by its gut microbes(肠道微生物)?Bertocchini agrees and hopes her team’s findings might one day help employ the enzyme to break down plastics in landfills. But she expects using the chemical in some kind of industrial process — not simply ＂millions of worms thrown on top of the plastic. ＂1. What can we learn about the worms in the study?A. They take plastics as their everyday food.B. They are newly evolved creatures.C. They can consume plastics.D. They wind up in landfills.2. According to Jennifer DeBruyn, the next step of the study is to .A. identify other means of the breakdownB. find out the source of the enzymeC. confirm the research findingsD. increase the breakdown speed3. It can be inferred from the last paragraph that the chemical might .A. help to raise wormsB. help make plastic bagsC. be used to clean the oceansD. be produced in factories in future4. What is the main purpose of the passage?A. To explain a study method on worms.B. To introduce the diet of a special worm.C. To present a way to break down plastics.D. To propose new means to keep eco-balance.【文章大意】本文为说明文。
2019年高考英语一轮优练题 Unit 3 Life in the future(含解析)新人教版必
Unit 3 Life in the future李仕才一、阅读理解。
He was there every morning, sitting motionless on the front steps of his house. In the morning light, I could see the shadows that were etched(蚀刻)deep within the lines surrounding his eyes.Each morning I walked this route with my daughter to her kindergarten class. We were new to the neighborhood so that I didn’t know many of my neighbors. On one beautiful autumn morning, as we passed his house, my daughter called out to him, “Hi, Mr. Man!” Always the outgoing child,I wasn’t surprised at her enthusiasm. But her cheerfulness soon faded when the man didn’t look at her and say “Hi” back.As we continued on our walk to school, my daughter asked why the man didn’t want to say hi to her. Because I didn’t have an answer, I said simply, “Maybe he is having a bad day.” later I knew that Bob lost his wife in a car accident.A few days later, as we approached Bob’s house on our way to school, my daughter called out “Hi Mr. Man!” and as usual, he didn’t respond. But then she ran onto his front lawn and picked up a beautiful red autumn leaf. She continued up one step and handed it to him. I held my breath.As she skipped back to me, she said, “See you tomorrow, Mr. Man!” This time, he acknowledged her. In a soft gentle voice, he th anked her and said, “See you tomorrow.”From then on, Bob and my daughter exchanged greeting each morning. Our friendship with Bob continued for many years. But, the sweetest day is when Bob attended my daughter’s high school graduation. Bob gave my daught er a gift---a book on identifying various plants and trees. There, tucked in the pages that described an oak tree, was the leaf my daughter had given to Mr. Man when they first met. He had dried and pressed it and kept it all those years.1.What puzzled the girl?A. The cause of the man’s sadnessB. The shadows in the man’s eyesC. The man’s sitting still on the stepsD. The man’s not answering her greeting2.How did the author feel when his daughter gave the red leaf to the man?A. ProudB. NervousC. EmbarrassedD. Comfortable3.Why did Bob keep that little red leaf?A. It was a care from a girlB. It was a symbol of enthusiasmC. It was a reminder of his painful daysD. It represented the knowledge of trees4.Which of the following can be the best title for the text?A.A Simple Red LeafB.A Strange NeighborC. An Unusual FriendD.A Greeting From A girl【文章大意】本文是一篇记叙文。