人教版英语选修六第四单元复习
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人教版英语选修六第四单元知识点U4(选修六)Language points-reading 1on/ upon+ n 依靠,依赖, 确(坚)信You can’t depend on your parents forever.depend on/upon+sb.+to do 指望某人做……You can’t depend on him to come on time.depend on/upon +it +that…. 指望…..You may depend on it that he will come.depend on/upon +wh-从句Whether you can pass the exam depends on how hard you work.That (all) depends./ it all depends. (口语)视情况而定,I may help you. But that/ it depends.2. light1)n. 光,线,灯2)v.照亮,点燃He lit a match. 他划着了一根火柴。
A smile of triumph lit up her face. 她的脸上闪耀着胜利的微笑。
The match lights easily. 这火柴容易划着3)adjThe suitcase is very light.(轻的)There was a light rain falling.He is a light sleeper. 他睡不沉。
(易醒的)3. heat v. / heat up 是某物变热或变暖heated adj. 热的激烈的heated debate, heated discussionheatedly adv.愤怒地激昂地heater加热器发热器consumer (n.).1 消耗,花费;耗尽She consumed most of her time in reading.2吃完,喝光The kids soon consumed all the food on the table. 孩子们一会儿功夫便把桌上的食品全部吃光。
B6U4 Global warming Part1 Words and phrases1.consume energy 消耗能源the consumption of food 食物的消耗2.renewable/ non-renewable energy可再生能源/不可再生能源3.How has this come about?这个是怎么发生的呢?4.a random but natural phenomenon一个随意但是自然的现象at random=randomly 随意地5.subscribe to his view 同意他的观点subscribe to some newspapers 订阅一些报纸subscribe $2.000 to the Hope Project把2000美元捐赠给希望工程6.fossil fuel化石燃料7.a large quantity of illegal drugs/wine= quantities of illegal drugs/wine大量的非法毒品/酒8.tend to be trapped in the atmosphere=have a tendency to be trapped in the atmosphere 往往被困在大气层中9.scientific data 科学数据10.The accident resulted in his death.导致His death resulted from the accident. 由…导致11.a growing trend/tendency 一个增加的趋势12.lead to a catastrophe 导致了一个大灾难13.flood/drought/famine洪水/干旱/饥荒14.oppose changing the law 反对改变法律=be opposed to changing the law=object to changing the law15.bad environmental consequence(=result)坏的坏境结果as a consequence 因此=as a result=consequently =thereforeas a consequence of 由于=as a result of =owing to=on account of16.a mild punishment/climate一个轻微的惩罚/一个温和的气候17.state the fact 陈述事实be in a state of despair处于绝望状态18.a (wide/great) range of animals 各种各样的动物=a variety/diversity of animalsa mountain range山脉19.glance at/stare at/glare at/look at匆匆一看/目不转睛地看/怒目而视/看20.a steady increase 一个稳定的上升21.receive widespread support 获得广泛的支持22.on the whole 大体上23.the average temperature平均温度on average平均起来e into existence=come into being开始存在There exist s…存在有…25.the outer space 外太空inner beauty内在美26.I will attend the meeting on behalf of my school. =I will represent my school to attend the meeting.27.both teams and individual s 团队和个体individual freedom 个体的自由28.advocate knowing about traditional culture提倡了解传统文化29.make a commitment做出承诺30.put up with /bear/stand/tolerate his bad temper忍受他的坏脾气31.electrical appliances电器用品32.so/as long as只要33.be casua l about 对…随意34.political circumstances 政治环境35.refresh your spirit 使你精神焕发36.make great contributions to economic growth为经济的增长做出了很大的贡献37.make a presentation to the class给全班做一个陈述38.announce a slogan 宣布一个口号39.disagreemen t about how to use unclea r power 对如何使用核能的分歧reach/come to an agreement 达成一致Part2 Fill in the blanks.1.It is a rapid increase when compared (compare) to other natural changes.2.All scientists subscribe to the view that the increase in the earth’s temperature is due to the burning of fossilfuels like coal,natural gas and oil to produce (produce)energy.3.Some byproducts of this process are called “greenhouse”gases, the most important one of which is carbon dioxide.4.It means that more heat energy tends to be trapped in the atmosphere causing (cause) the global temperature to go (go) up.5.We know that the levels of carbon dioxide have increased (increase) greatly over the last 100 to 150 years.6.Recycle cans,bottles, plastic bags and newspapers if circumstances (circumstance) allow you to.。
Unit 4 Global warming单元知识点练习多项选择1. If you insist on smoking heavily like that,you will have to suffer the _____ sooner or later.A.achievementsB.causesC.consequencesD.exchanges2.—How did people respond to the plan to charge for plastic bags used in the supermarket?—The plan received ______ support throughout the country.A.widespreadB.steadyC.potentialD.obvious3. Last year the number of students who graduated with a driving licence reached 200,000,a(n______ of 40,000 per year. A.average B.number C.amount D.quantity4. —Do you _______ the idea of living a low-carbon life?—It sounds tough,but it isa tendency.A.correspond toB.apply toC.cater toD.subscribe to5. Motels in and near large cities ______to be more expensive than the ones in small towns.A.turnB.tendC.subscribeD.appeal6. Thousands and thousands of people attended the president’s inaugural ceremony,with ages______ from 5 to 100.A.varying B.changing C.ranging D.rating7. —After a long sleep,I feel very weak.—Then why not wash your face? The cool water will surely ________you.A.rebuildB.rescueC.remainD.refresh8. People who come to attend court hearings are always chosen _______ in order to be fair.A. by chanceB. at randomC. on purposeD. in general9. ____that all the data stored in the computer got stolen with nobody being responsible for it?A. How comeB. How come aboutC. How it came aboutD. How does it happen10. In order to test how strong the tank was, the experts purposefully let the pressure insidecontinue to ______until it bursts A. come up B. rise up C. build up D. raise11. The manager just _____ Tom’s report and gave it to his secretary at once,saying it seemed to beall right. A.fixed on B.thought over C.glanced through D.concentrated on12. These measures would make a valuable ______towards reducing industrial accidents.A.contributionB.catastropheC.progressD.position13. Prices keep _______and people have to keep a close eye on their wallet.A. going upB. rising upC. lifting upD. raising up14. Why do w e have to Bob’s selfish behavior? We should teach him how to care for others.A. make up forB. come up withC. put up withD. get rid of15. There are some spelling mistakes in your composition,but ________ your composition is good.A.as a wholeB.on the wholeC.on one handD.on the other hand16.At no time and under no ________ will China be the first to use nuclear weapons.A.phenomenaB.coincidencesmitmentsD.circumstances2013年11月29日星期五选修六unit 4 词汇复习题pared with developing countries, developed countries ___ more energy.A. communicateB.fryC. surviveD. consume2. Though water is a ____ resource, we still can not waste water.A. renewableB. naughtyC. responsibleD. adventurous3. Then watch carefully and see what will ___.A. come outB. come acrossC. come overD. come about4. The interviwer will probably interview individual students at ____.A. at the endB. randomC. at riskD. at rest5.One of the tasks of the sociologists is to study the social ___.A. majorityB. phenomenonC. solutionD. adventure6.I’ve personally never ___ to the view that either sex is superior to the other.A.exchangedB. transportedC. subscribedD. pronounced7.Many small factories in that country closed down for lack of ___.A. fuelB. streamC. poisonD. roar8. There are only a small ___ of flowers in the garden. A. share B. quantity C. parachute D. closet9. He ___ like an a wild animal as blood came out his wound.A. trendedB. paddledC. combinedD. howled10. They heard a loud explosion and saw a ball of fire__. A. take off B. go up C. pull up D. make out11. The wide application of computers in science and technology will free people from the labor of complicated ___ and calculation. A. measurement B. opportunity C. responsibility D. similarity12. The drought in the 1930s ____ extreme crop losses in the MidwestA. got away fromB. get away inC. resulted inD. resulted from13. It is reported that the rise in violent crime is a disturbing new _. A. mirror B. match C. rope D. trend14. If the world is to avoid environmental ____, developed countries should play a more important role.A. situationsB. catastrophesC. compassesD. pronunciations15. If the _____ continues, the harvest will be ruined. A. drought B. trade C. tourismD. signal16. At first he was __ to the plan, but we persuaded him. A. opposed B. scared C. deserted D. separated17. As a ____ of your bad work, I am forced to dismiss you.A. advanceB. swallowC. deadlineD. consequence18. He ___ calling me but I really didn’t want to talk to h im.A. kept onB. kept fromC. kept out ofD. kept up with19. It was clear at first__ that they had not died of their wounds. A. strike B. rescueC. glanceD. temple20. There was a ____ dissatisfaction among the students with the food on the campus.A. internationalB. widespreadC. unforgettableD. particular21. ___, it is a good plan. We should not be particular about it.A. For agesB. From time to timeC. On the wholeD. By no means22. Going by train is more__than going by plane. A. economical B. basic C. poisonous D. equal23. Most people walk with an__rate of 5 kilometers per hour. A. tidy B. normal C. similar D. average24. Most religions believe in the__of life after death. A. position B. existence C. trade D. protection25. In China, both late marriages and late childbirth are ___, in addition to fewer and better births.A. combinedB. shakenC. advocatedD. published26. At last we made a ____ to keep on working together.A. contributionB. mistakeC. commitmentD. difference27. I don’t know ho w his parents ___ his bad behaviors.A. keep out ofB. run out ofC. put up withD. make use of28. She made it clear that under no ____ would she cancel the trip.A. phenomenonB. experiencesC. situationsD. circumstances29. Will you come to my office for the ____ of the new products?A. presentationB. contributionC. disagreementD. pollution30. Before I interviewed Ms Waters, I read her book again to ___ my memory.A. crackB. refreshC. handleD. seizeUnit 4 Global warming单元知识点练习参考答案多项选择1---5 CAADB 6-10 CDBAC 11-16 CAACBD1-5 DADBB 6-10 CABDB 11-15 ACDBA 16-20 ADACB 21-25 CADBC 26-30 CCDAB。
高二|课本知识点详解及练习:选修6Unit4(人教版)Unit4 Global warming知识点详解Ⅰ. 常考单词必背1.consume vt. 消耗,消费;挥霍vi. 耗尽,毁灭Consumer goods production was to go up by six percent in that city. 在那个城市,消费品生产将增长百分之六。
2.random n. 偶然/随便的行动adj. 任意的;随便的;任意的adv.胡乱地[快速闪记]at random 随便地Because these natural disasters occur at random times,it is difficult to warn people in advance. 自然灾害的发生具有随机性,所以很难事先警告人们。
3.subscribe vt.&vi.(常与to连用) ① 捐(款);捐助② 订购(报纸等) ③ 同意;赞同I subscribe to a few favourite charities. 我定期向几个中意的慈善机构捐款。
I've personally never subscribed to the view that either sex is superior to the other. 我个人从来都不同意性别有优劣之分的观点。
4.quantity n. 量;数量The change of quantity causes the change of quality. 量变引起质变。
[快速闪记]a large quantity of/large quantities of 大量in quantity/in large quantities 大量地5.trend n. 趋势;倾向But recently,we have seen a gradual trend towards healthier food. 但是近来,我们注意到人们逐渐倾向于更加健康的食品。
人教版英语选修六第四单元知识点U4(选修六)Language points-reading 11.depend on/ upon+ n 依靠,依赖, 确(坚)信You can’t depend on your parents forever.depend on/upon+sb.+to do 指望某人做……You can’t depend on him to come on time.depend on/upon +it +that…. 指望…..You may depend on it that he will come.depend on/upon +wh-从句Whether you can pass the exam depends on how hard you work.That (all) depends./ it all depends. (口语)视情况而定,I may help you. But that/ it depends.2. light1)n. 光,线,灯2)v.照亮,点燃He lit a match. 他划着了一根火柴。
A smile of triumph lit up her face. 她的脸上闪耀着胜利的微笑。
The match lights easily. 这火柴容易划着3)adjThe suitcase is very light.(轻的)There was a light rain falling.He is a light sleeper. 他睡不沉。
(易醒的)3. heat v. / heat up 是某物变热或变暖heated adj. 热的激烈的heated debate, heated discussionheatedly adv.愤怒地激昂地heater加热器发热器4.consume v.---- consumer (n.).1 消耗,花费;耗尽She consumed most of her time in reading.2吃完,喝光The kids soon consumed all the food on the table. 孩子们一会儿功夫便把桌上的食品全部吃光。
⼈教版英语选修六第四单元复习期末复习作业清单选修六Unit 42014-1-6 (编号:)I.单词拼写1.____________(消费者)are encouraged to complain about faulty goods.2.We____________(提倡)using cloth or paper bags instead of plastic ones.3.There is a growing_________________(趋势)for people to work at home instead of in an office.4. Child as he is,he has many interests,____________(变化)from chess to swimming. 5.She was trembling with excitement,but to my surprise her voice was__________(稳定).6.Jane’s work is above ____________(平均)while Hob’s is very much below it. 7.Under normal____________(情况),these two gases react readily to produce carbon dioxide and water.8.All the crops and fields here are under water during the____________(洪⽔).9.The violent____________(现象)of nature are still hard for us to deal with.10.I ____________(瞥了⼀下)at the clock and discovered that there were only 30 seconds left to play.11.We ____________with each other on the matter,but it is urgent to reduce the ____________,for we don’t have much time left.(agree)12. When did the earth came into _____________.(存在)13. We spare no efforts to control population____________.(增长)14. The subjects for this investigation were selected____________.(随机地)15. Day-care centres for the elderly make a valuable ____________(贡献)to the overallservice.II.选词填空1.No one but mad people would __________________ this point of view.2.I’ve told him to stop, but he_________________doing it.3.Don’t worry. We have stored_________________food already.4.The old man_________________his watch and then looked at the sky.5._______________many difficulties remain, we can overcome them.6.Inflation(通货膨胀)may be rising, if so, prices will _______________.7.They went for a holiday in order to _______________their health.8.I ______________________the plan as I couldn’t see any advantages from it.9.Sometimes I have problems at work but _________________________I enjoy myjob.10.They didn’t know how the change had___________________.11.I’ll have to _______________________the noise till I move away next week.12.I must, _____________________my family, thank you again for your generous help.13.She picked out two books ________________, without looking at the titles.14.The rapid increase of tourism in recent years has__________________the construction of many hotels.15.__________ you keep away from them, they won’t do you any harm.III.单项填空1.________ you promise to come to help me, I don’t mind what time tomorrow you arrive at my place.A. So long asB. So far asC. As good asD. As well as2.—How do you like the film?—There was nothing special –it was only _______.A. averageB. usualC. normalD. common3.Here’s one of the best ways to protect you skin—_____ too much sunshine.A. not to absorbB. not having absorbedC. having not absorbedD. don’t absorb4.Since then the number of people taking driving lessons _________20%.A. has increased byB. increased toC. has increased toD. increased by5._______ Michael Jordan has been back on the sports field.A. It is believed whatB. It’s reported thatC. People thought thatD. They are reported that6.______ that no one enjoys ______.A. He seems; to be looked down onB. He is seemed; being looked down uponC. It seems; to be looked down uponD. It seems; being looked down upon7.—It’s a long time _____ I saw you last.—Yes, and what a pity! It will be a long time ____ we see each other again.A. before, sinceB. since, beforeC. when, whenD. since, when8. Was it the park ______ you met Tom yesterday?A. thatB. whereC. whichD. what9. When was it in the library ____ you came across him?A. WhereB. thatC. in whichD. which10. — I think you should clean the blackboard, Dave.—_______, It’s not my turn.A. No wayB. Not possibleC. No chanceD. Not at allIV.阅读表达(共5⼩题;每⼩题3分,满分15分)Modern inventions have speeded up people's lives amazingly.Motor cars cover a hundred miles in a little more than an hour,aircraft cross the world inside a day,while computers operate at lightning speed.Indeed,this love of speed seems never ending.Every year motor cars are produced which go even faster and each new computer boasts(吹嘘)of saving precious seconds in handling tasks.All this saves time,but at a price.When we lose or gain half a day in speeding across the world in an airplane,our bodies tell us so.We get the uncomfortable feeling known as jet lag;our bodies feel that they have been left behind in another time zone.Again,spending too long at computers results in painful wrists and fingers.Mobile phones also ,according to some scientists;too much use may put harmful radiation into our brains,a consequence we do not like to think about.However,what do we do with the time we have saved? Certainly not relax,or so itseems.We are so accustomed to constant activity that we find it difficult to sit and do nothing or even just one thing at a time.Perhaps the days are long gone when we might listen quietly to a story on the radio,letting imagination take us into another world.There was a time when some people's lives were devoted simply to the cultivation(耕耘)of the land or the care of cattle.No multi tasking there;their lives went on at a much gentler pace,and in a familiar pattern.There is much that we might envy about a way of life like this.Yet before we do so,we must think of the hard tasks our ancestors faced:they farmed with bare hands,often lived close to hunger,and had to make tools from wood and stone. Modern machineryhas freed people from that primitive existence.1.What's the passage mainly about?(within 10 words)______________________________________________________________________ 2.List the difficulties our ancestors met according to the text.(within 15 words)①_____________________________________________________________________②______________________________________________________________________③______________________________________________________________________ 3.Fill in the blank in the 2nd paragraph with proper words or phrases.______________________________________________________________________ 4.Why do we make new products more and more time-saving according to Paragraph 1 of this passage?_______________________________________________________________________ 5.Translate the underlined sentence in the 3rd paragraph into Chinese._______________________________________________________________________。
人教版高中英语选修六-Unit4...Unit 4 Global warming Section B Learning about Language 题组ⅠⅠ.单项填空1. There is a dissatisfaction among thestudents with the food on campus.A. widespreadB. wideC. broadD. big2. There are some spelling mistakes in your composition, but your composition is good.A. as a wholeB. on the wholeC. on one handD. on the other hand3. Last year the number of students who graduatedwith a driving licence reached 200, 000, a(n)of 40,000 per year.A. averageB. numberC. amountD. quantity4. On the , we work five days a week.A. averageB. availableC. greatestD. refreshing5. This is the oldest Hebrew manuscript in .A. lifeB. faithC. existenceD. exhibition6. Was it on a lonely island he was saved one month after the boat went down?A. whereB. thatC. whichD. what7. —that he managed to get the information?—Oh, a friend of his helped him.A. Where was itB. What was itC. How was itD. Why was it8. It was he came back from Africa that year he met the girl he would like to marry.A. when; thenB. not; untilC. not until; thatD. only; when9. People now do not believe in the of ghosts.A. birthB. evidenceC. existenceD. occurrence10. She looks sad. Could you please tell methat prevents her from being as happy as before. A. what it is B. it is whatC. how it isD. it is how11. An airship flies an average speed oftwo miles a minute.A. atB. onC. byD. with12. Could it be in the restaurant in youhad dinner with me yesterday you left behind your keys and wallet?A. that; whichB. which; thatC. where; thatD. that; where13. I dislike the music but I enjoy this film .A. as the wholeB. on the wholeC. a wholeD. for a whole14. The Western region of the United States hasmineral deposits.A. preciousB. beneficialC. remarkableD. widespread15. I have always been honest and straightforward, and it doesn’t matter that I’m talking to.A. who is itB. who it isC. it is whoD. it is whom16. —How unhappy your roommate looks!—Yes, but he’s not willing to tell me what it isis troubling him.A. whatB. whichC. asD. that17. —Who is making so much noise in the garden?—the children.A. It isB. They areC. That isD. There areⅡ.完成句子1.(我们在一起待了几个星期后)that I found we had a lot in common.(stay)2. No one knows when the custom(产生), which makes it very mysterious.(existence)3.(就在得到他想要的东西之后)that he realized it was not important.(it, desire)4. Global warming(的确对世界气候有损害).(harm n.)5. (到底是什么)that caused the forest fire?(what)答案与解析Ⅰ. 1. A 句意:学生普遍对学校的饭菜不满意。
高二|课本知识点详解及练习:选修6Unit4〔人教版〕Unit4 Global warming知识点详解Ⅰ. 常考单词必背1.consume vt. 消耗,消费;挥霍vi. 耗尽,消灭Consumer goods production was to go up by six percent in that city. 在那个城市,消费品消费将增长百分之六。
2.random n. 偶尔/随意的行动adj. 任意的;随意的;任意的adv.胡乱地[快速闪记]at random 随意地Because these natural disasters occur at random times,it is difficult to warn people in advance. 自然灾害的发生具有随机性,所以很难事先警告人们。
3.subscribe vt.&vi.(常与to连用) ① 捐(款);捐助② 订购(报纸等) ③ 同意;赞同I subscribe to a few favourite charities. 我定期向几个中意的慈善机构捐款。
I've personally never subscribed to the view that either sex is superior to the other. 我个人从来都不同意性别有优劣之分的观点。
4.quantity n. 量;数量The change of quantity causes the change of quality. 量变引起质变。
[快速闪记]a large quantity of/large quantities of 大量in quantity/in large quantities 大量地5.trend n. 趋势;倾向But recently,we have seen a gradual trend towards healthier food. 但是近来,我们注意到人们逐渐倾向于更加安康的食品。
期末复习作业清单选修六Unit 42014-1-6 (编号:)I.单词拼写1.____________(消费者)are encouraged to complain about faulty goods.2.We____________(提倡)using cloth or paper bags instead of plastic ones.3.There is a growing_________________(趋势)for people to work at home instead of in an office.4. Child as he is,he has many interests,____________(变化)from chess to swimming. 5.She was trembling with excitement,but to my surprise her voice was__________(稳定).6.Jane’s work is above ____________(平均)while Hob’s is very much below it. 7.Under normal____________(情况),these two gases react readily to produce carbon dioxide and water.8.All the crops and fields here are under water during the____________(洪水).9.The violent____________(现象)of nature are still hard for us to deal with.10.I ____________(瞥了一下)at the clock and discovered that there were only 30 seconds left to play.11.We ____________with each other on the matter,but it is urgent to reduce the ____________,for we don’t have much time left.(agree)12. When did the earth came into _____________.(存在)13. We spare no efforts to control population____________.(增长)14. The subjects for this investigation were selected____________.(随机地)15. Day-care centres for the elderly make a valuable ____________(贡献)to the overallservice.II.选词填空1.No one but mad people would __________________ this point of view.2.I’ve told him to stop, but he_________________doing it.3.Don’t worry. We have stored_________________food already.4.The old man_________________his watch and then looked at the sky.5._______________many difficulties remain, we can overcome them.6.Inflation(通货膨胀)may be rising, if so, prices will _______________.7.They went for a holiday in order to _______________their health.8.I ______________________the plan as I couldn’t see any advantages from it.9.Sometimes I have problems at work but _________________________I enjoy myjob.10.They didn’t know how the change had___________________.11.I’ll have to _______________________the noise till I move away next week.12.I must, _____________________my family, thank you again for your generous help.13.She picked out two books ________________, without looking at the titles.14.The rapid increase of tourism in recent years has__________________theconstruction of many hotels.15.__________ you keep away from them, they won’t do you any harm.III.单项填空1.________ you promise to come to help me, I don’t mind what time tomorrow youarrive at my place.A. So long asB. So far asC. As good asD. As well as2.—How do you like the film?—There was nothing special –it was only _______.A. averageB. usualC. normalD. common3.Here’s one of the best ways to protect you skin—_____ too much sunshine.A. not to absorbB. not having absorbedC. having not absorbedD. don’t absorb4.Since then the number of people taking driving lessons _________20%.A. has increased byB. increased toC. has increased toD. increased by5._______ Michael Jordan has been back on the sports field.A. It is believed whatB. It’s reported thatC. People thought thatD. They are reported that6.______ that no one enjoys ______.A. He seems; to be looked down onB. He is seemed; being looked down uponC. It seems; to be looked down uponD. It seems; being looked down upon7.—It’s a long time _____ I saw you last.—Yes, and what a pity! It will be a long time ____ we see each other again.A. before, sinceB. since, beforeC. when, whenD. since, when8. Was it the park ______ you met Tom yesterday?A. thatB. whereC. whichD. what9. When was it in the library ____ you came across him?A. WhereB. thatC. in whichD. which10. — I think you should clean the blackboard, Dave.—_______, It’s not my turn.A. No wayB. Not possibleC. No chanceD. Not at allIV.阅读表达(共5小题;每小题3分,满分15分)Modern inventions have speeded up people's lives amazingly.Motor cars cover a hundred miles in a little more than an hour,aircraft cross the world inside a day,while computers operate at lightning speed.Indeed,this love of speed seems never ending.Every year motor cars are produced which go even faster and each new computer boasts(吹嘘)of saving precious seconds in handling tasks.All this saves time,but at a price.When we lose or gain half a day in speeding across the world in an airplane,our bodies tell us so.We get the uncomfortable feeling known as jet lag;our bodies feel that they have been left behind in another time zone.Again,spending too long at computers results in painful wrists and fingers.Mobile phones also ,according to some scientists;too much use may put harmful radiation into our brains,a consequence we do not like to think about.However,what do we do with the time we have saved? Certainly not relax,or so itseems.We are so accustomed to constant activity that we find it difficult to sit and do nothing or even just one thing at a time.Perhaps the days are long gone when we might listen quietly to a story on the radio,letting imagination take us into another world.There was a time when some people's lives were devoted simply to the cultivation(耕耘)of the land or the care of cattle.No multi tasking there;their lives went on at a much gentler pace,and in a familiar pattern.There is much that we might envy about a way of life like this.Yet before we do so,we must think of the hard tasks our ancestors faced:they farmed with bare hands,often lived close to hunger,and had to make tools from wood and stone. Modern machinery has freed people from that primitive existence.1.What's the passage mainly about?(within 10 words)______________________________________________________________________ 2.List the difficulties our ancestors met according to the text.(within 15 words)①_____________________________________________________________________②______________________________________________________________________③______________________________________________________________________ 3.Fill in the blank in the 2nd paragraph with proper words or phrases.______________________________________________________________________ 4.Why do we make new products more and more time-saving according to Paragraph 1 of this passage?_______________________________________________________________________ 5.Translate the underlined sentence in the 3rd paragraph into Chinese._______________________________________________________________________。