高中英语第三册(全一册)unitcrossing limits 练习与解析

1、Unit 2 Crossing limits 练习与解析3单项填空1.Whats the matter with you? the window,my finger was cut unexpectedly.A.CleaningB.To cleanC.While cleaningD.While I was cleaning解析：主从复合句中，若从句主语与主句主语相同，则从句主语及助动词可省略，而以现在分词短语或过去分词短语代替；若主语不同，则不能，故排除A、B、C三项。答案：D2.Never faith in himself,the scientist went on with his res

2、earch.A.losingB.to loseC.lostD.to be lost解析：lose faith in“对失去信心”，lose的主语为the scientist,应用v.-ing形式。答案：A3.The bank is reported in the local newspaper in broad daylight yesterday.A.being robbedB.having been robbedC.to have been robbedD.to have robbed解析:It is reported/believed/said/thought that.为固定句型，也可

3、转换为sth./sb.be believed/reported/said/thought+to do/have done，若动作已经发生，则用不定式的完成时。本句中有确切的时间状语yesterday,故选C项。答案：C4.The old man, abroad for twenty years,is on the way back to his motherland.A.to workB.workingC.to have workedD.having worked解析：本句选项在句中作定语，且动作发生在回祖国之前，故用分词的完成时态。答案：D5.Alice returned from the

4、managers office, me that the boss wanted to see me at once.A.having toldB.tellsC.to tellD.telling解析：本句中选项部分作方式状语。答案：D6.Paper money was in use in China when Marco Polo visited the country in thirteenth century.A.the;/B.the;theC./;theD./ ;/解析：in use为固定短语，不加冠词，序数词前应加冠词，故选C。答案：C7.Chicago is on Lake Mich

5、igan.A.theB./C.aD.an解析：表示湖泊的专有名词，若lake放在前面，则不用the,还有：Room 123,Bus 21。答案：B8.When I saw Jane,I stopped and smiled,but she me and walked on.A.refusedB.omittedC.ignoredD.denied解析：本题考查动词的区别。refuse“拒绝”；omit“省略”；ignore“不理，忽视”；deny“否认，拒绝”。根据题意，应选C。答案：C9. it or not,his discovery has created a stir in scienti

6、fic circles.A.BelieveB.To believeC.BelievingD.Believed解析：believe it or not为固定搭配，作为独立主格结构，相当于状语从句。believe作“认为，相信”解，后跟that从句或构成believe sth./sb.to be+adj.答案：A10.After the meeting,the leaders had a discussion about it.A.farB.fartherC.furtherD.farthest解析：far有两个比较级farther,further，若表示距离的远，则可通用，但further还可作“

7、进一步的（地）”讲。根据题意答案为C。答案：C11.The film brought the hours back to me I was taken good care of in that far away village.A.untilB.thatC.whenD.where解析：做定语从句试题时，首先要找出先行词，其次是看先行词在定语从句中作何成分，然后确定是用关系代词还是关系副词，此题中先行词the hours用定语从句隔开，增加了试题的难度，由于在定语从句中作时间状语，故选C。答案：C12.Each player of chess is trying to trap the othe

8、r players king into a position escape is impossible.A.whenB.thatC.in whichD.from which解析：本题考查定语从句。先行词a position在从句中作地点状语；escape from“从某处逃脱”。答案：D13.He came to my class every week,but his attitude he was not really interested in the subject.A.expressedB.describedC.explainedD.suggested解析：此题考查的词义的区别。exp

9、ress “表达”某人的感情； describe描述；explain sth.to sb.向某人解释某事，suggest有“建议，表明”之意，根据题意，应选D。答案：D14.It was dark.We decided to for the night at a farmhouse.A.put awayB.put downC.put upD.put on解析：本题考查由动词put构成的动词短语的区别。put away“摆放、放置（好）”；put down“放下，写下，镇压”；put up“搭起，树起，举起，张贴，过夜（for）”；put on“穿上，上演”。根据题意，答案为C。答案：C15.O

10、n hearing the news of the accident in the coal mine,she pale.A.gotB.changedC.wentD.appeared解析：本题考查连系动词的用法。首先排除B项，change后不能跟形容词；appear“看起来好像”，往往表示一种假象；get“变得”；go“变成”，常跟bad,mad,crazy,hungry,cold等词。答案：C 完形填空A certain hunter had found a piece of forest where there were plenty of animals to hunt.The only

11、 trouble was that the place was very difficult to get to.He returned from his first 1 to the place in late autumn,and could not get back until the snows melted（融化） in the following 2 .Then he went to the pilot of a small plane,who earned his living by 3 hunters over parts of the country 4 were no ro

12、ads and no railways,and asked him to take him back to his 5 piece of forest.The pilot did not know the place,so the hunter 6 it to him on the map.“ 7 there is nowhere to land there,man!” said the pilot.“I have flown 8 that part of the country on my way to other places,and I know that we cant land an

13、ywhere between this river and these mountains.” “I thought you were a 9 pilot,” said the hunter.“Some of my friends said you could land a plane on a stamp.” “Thats 10 ,”answered the pilot.“I can land a plane where nobody else can.But I 11 you there is nowhere to land in the place you are talking abo

14、ut.” “And what if I tell you that another pilot 12 land me there last spring?”said the hunter.“Is that 13 ?” asked the pilot.“Yes,it is.I swear（起誓）it.” Well,this pilot could not let himself be 14 by another,so he agreed to take the hunter.When they reached the place;the hunter 15 out a small spot（地点

15、） without trees in the middle of the forest,with a steep rise（陡峻的斜坡） at one end.The pilot thought that there was 16 room to land there,but the hunter said that the other pilot had done so the year before,so 17 went to the plane.When it came to the rise,it turned right over on to its 18 .As the hunte

16、r climbed out,he 19 and said,“Yes,that is exactly how the other pilot managed 20 last time.” 1.A.voyageB.entranceC.wayD.visit 解析：搭配问题，用排除法和比较法。首先排除B项，A、C、D三项作名词用时皆可接to，但voyage意为“航海，航行”，way意为“方式，方法，道路”；visit意为“参观，访问，到（某地）”，比较A、C、D的意思，显然D项符合题意。仅考虑搭配结构，不注意所要表达的上下文意思会造成误选。 答案：D2.A.springB.summerC.autumn

17、D.winter 解析：生活常识问题，用直接法。一般说来，（头年）秋冬积雪，来年春天融化，显然选A项。答案：A3.A.bringingB.takingC.carryingD.fetching 解析：词语辨析问题，用比较法。这四个动词有明确的方向性，bring意为“拿来，带来”；take意为“拿走，带走”；carry意为“携带，搬运”；fetch意为“去取回，去拿来”。比较四个词可知，应选C项。 答案：C4.A.whereB.where thereC.thereD.there where 解析：从句与搭配问题，用直接法。显然此句是由关系副词where引导的定语从句，另一方面“there be”为

18、固定搭配，故应选B项。答案：B5.A.comfortableB.favouriteC.preciousD.dangerous 解析：上下文语境问题，用直接法或排除法。短文第一句话提示：猎人发现一处有众多动物的森林，这对于以捕猎为生的猎人来说无疑是再理想不过了。A、C、D三项与题意不符，故排除。另一方面，favourite意为“最佳的、合适的、理想的”，与语境题意相符。答案：B6.A.referredB.introducedC.pointedD.showed 解析：搭配问题，用排除法或比较法。首先排除A、C两项，introduce sth.to sb.意为“把某物介绍给某人”，或“让某人熟悉某物

19、”，show sth.to sb.意为“给某人看某物”。此处由于飞行员不知道森林中的具体位置，因此猎人在地图上指明其位置，比较B、D两项，知D为正确选项。答案：D7.A.InsteadB.ThereforeC.ButD.However 解析：连词问题，用排除法。通过两个人对话的语境可以判断该处缺少转折关系的连词，A、B两项为副词，应排除。however在行文中常常伴有逗号，这是however用法的重要标志；but用在句首时不用逗号作为标志。故应选C项。答案：C 8.A.overB.throughC.acrossD.beyond 解析：上下文语境问题，用直接法。此处与上文“by carrying

20、 hunters over parts of the country”相对应，故选A项。答案：A9.A.commonB.ordinaryC.excellentD.wonderful 解析：语境问题，用排除法。ordinary和excellent都是以元音音素发音开头，前面的冠词应为an，这与题目相违背，故应排除B、C两项。猎人要想让飞行员找到他理想的森林地带，他应该对飞行员讲一些恭维之类的言语，以博得飞行员的好感，故应排除A项，那么只有D为正确选项。答案：D10.A.falseB.rightC.actualD.sure 解析：语境问题，用直接法。“Thats right”，一方面是习惯表达法，

21、A、C、D三项一般不这样表述；另一方面，通过上文的意思可知，飞行员对自己的驾驶技术和水平充满自信，故应选择B项。答案：B11.A.tellB.announceC.persuadeD.prevent 解析：词语用法问题，用直接法或排除法。A项的用法是“tell sb./sth.”或“tell sb.+clause”，B项的用法是“announce to sb.that clause”,C项为“persuade sb.（not） to do sth.”，D项为“prevent sb./sth.（from） doing sth.”，A 项此处可译为“我实话告诉你”。答案：A12.A.had toB.

22、didC.shouldD.would 解析：语境语气问题，用直接法。由猎人说话的语气可以判断，此处应该选择“did”，表示强调语气。答案：B13.A.perfectB.funnyC.trueD.pleasant 解析：语境语气问题，用直接法。此处可以判断飞行员对猎人说话的真实性表示怀疑，故选C项。答案：C14.A.hitB.struckC.attackedD.beaten 解析：词语辨析问题，用排除法。hit意为“打击、碰撞、袭击”，strike意为“敲打、攻击、铸造”，attack意为“攻击、抨击、侵袭”，beat意为“敲打；敲击、打败”。我们常用defeat sb.或 beat sb.表示

23、“打败、击败某人”。显然，飞行员决不愿意让他人超过自己，故应排除A、B、C三项，D为正确答案。答案：D15.A.carriedB.tookC.pointedD.worked 解析：词组辨析问题，用排除法或直接法。此处原文的意思是：当他们快要到达森林时，猎人用手指了指森林中一小块没有树的地方。carry out意为“执行、完成、实施”，take out意为“取出、拿出”，point out意为“指点、指明、指出”，work out意为“得出、计算出”。经过分析可知，C为正确选项。答案：C16.A.muchB.not enoughC.a littleD.enough 解析：语意问题，用直接法。根据

24、语句的意思，不难得出B项为正确答案。答案：B17.A.downB.upC.overD.under 解析：语境问题，用直接法。原文大意是：飞行员觉得着陆的空间不够，然而猎人则坚持说别的飞行员就是在这样的情况下着陆的，无奈飞行员只能将飞机下飞着陆。A项为正确答案。答案：A18.A.stomachB.backC.shoulderD.leg 解析：语境问题，用排除法或比较法。显然C、D两项不符合实际应排除。stomach意为“腹部”；back意为“背部”，另外onto ones back常连用，故应排除A项，B项为正确答案。答案：B19.A.smiled happilyB.shouted angril

25、yC.whispered anxiouslyD.cried curiously 解析：语境问题，用直接法。读到此处，读者应该领会到猎人目的或计划已经达到，当然是“高兴地笑了”，故选A项。答案：A20.A.meB.usC.itD.him 解析：搭配问题，用直接法。manage it是指“上次，那位飞行员刚好就是这么做的”。另一方面，我们在交际中也常常有这样的一句话。No，thanks.I can manage it myself.意思是“不用，谢谢。我自己能够应付”，故选C项。答案：C 阅读理解AIn 1723 there arrived in Philadelphia a penniless

26、young man,eager for work and for knowledge.As the years passed,this man,Benjamin Franklin,contributed greatly to his city and to his country.He became a printer and a publisher,and a learned man in many subjects.He also helped to spread learning by establishing a public library and by founding the A

27、merican Philosophical Society,which is an important academy of great scholars to this day.Franklin initiated many improvements in the city of Philadelphia,making it one of the worlds first cities to have paved and lighted streets as well as a police force and a fire-fighting company.He also made man

28、y practical inventions such as the Franklin stove,which was a very efficient heater,and the lightning road to protect buildings in electric storms.His scientific work with electricity earned Franklin world fame.Franklin played an important role in the early history of the United States.He took part

29、in drawing up the Declaration of Independence and the Constitution.He was the first ambassador to France,and he helped negotiate the treaty of 1783,which ended the Revolutionary War.As an active member and as president of the Abolitionist Society,Franklin devoted the last years of his life to the mo

30、vement to end slavery.1.When Franklin arrived in Philadelphia,he had .A.a little money but no workB.no money and no workC.a job and a lot of knowledgeD.a job and a lot of money 解析：从文章第一段 “.penniless.eager for work and knowledge”可知答案。答案：B2.The American Philosophical Society is an important academy of

31、 great scholars .A.at Franklins timeB.until he diedC.up to nowD.before the birth of the USA解析：从第一段最后一句“.to this day”可知答案为 C。答案：C3.Franklin became famous because he .A.invented the lightning road to protect buildings in electric stormsB.was the first ambassador to FranceC.took part in drawing up the

32、Declaration of Independence and the ConstitutionD.was president of the Abolitionist Society解析：从第二段最后一句话“His scientific work with electricity earned Franklin world fame”可知答案。答案：A4.“He also made many practical inventions.” means he .A.imagined lots of useful thingsB.made clever things C.invented a lot

33、 of useful objectsD.invented a lot of expensive things解析：猜测词义题。practical “实用的”。答案：CBScattered around the globe are more than 100 small regions of isolated volcanic activity known to geologists as hot spots.Unlike most of the worlds volcanoes,they are not always found at the boundaries of the great d

34、rifting plates that make up the earths surface;on the contrary,many of them lie deep in the interior of a plate.Most of the hot spots move only slowly,and in some cases,the movement of the plates past them has left trails of dead volcanoes.The hot spots and their volcanic trails are milestones that

35、mark the passage of the plates.That the plates are moving is now beyond dispute.Africa and South America,for example,are moving away from each other as new material is injected into the sea floor between them.The complimentary coastlines and certain geological features that seem to span the ocean ar

36、e reminders of where the two continents were once joined.The relative motion of the plates carrying these continents has been constructed in detail,but the motion of one plate with respect to another cannot readily be translated into motion with respect to the earths interior.It is not possible to d

37、etermine whether both continents are moving in opposite directions or whether one continent is stationary and the other is drifting away from it.Hot spots,anchored in the deeper layers of the earth,provide the measuring instruments needed to resolve the question.For an analysis of the hot-spot popul

38、ation it appears that the African plate is stationary and that it has not moved during the past 30 million years.The significance of hot spots is not confined to their role as a frame of reference.It now appears that they also have an important influence on the geophysical processes that propel the

39、plates across the globe.When a continental plate comes to rest over a hot spot,the material rising from deeper layers creates a broad dome.As the dome grows,it develops deep fissures（cracks）;in at least a few cases the continent may break entirely along some of these fissures,so that the hot spot in

40、itiates the formation of a new ocean.Thus just as earlier theories have explained the mobility of the continents,so hot spots may explain their mutability（inconstancy）.本文阐述地理知识。文章中作者陈述了火山发生的原因在于地球的地壳运动。整个地球内部有100多个互相分离的火山活动区域,其中大部分位于地球板块深处，地质学家称这些区域为热点。板块流动经过热点，留下轨迹。因此热点使我们了解哪一个板块是静止或流动的。1.The autho

41、r believes that .A.the motion of the plates corresponds to that of the earths interiorB.the geological theory about drifting plates has been proved to be trueC.the hot spots and the plates move slowly in opposite directionD.the movement of hot spots proves the continents are moving apart解析：本题为段落理解题。

42、第一段最后一句：热点和它们的火山轨迹表明板块是流动的。第二段第一句指出板块的流动是不可争议的。答案：B2.That Africa and South America were once joined can be deduced from the fact that .A.the two continents are still moving in opposite directionsB.they have been found to share certain geological featuresC.the African plate has been stable for 30 mil

43、lion yearsD.over 100 hot spots are scattered all around the globe解析：本题考查对段落的理解。第二段第三句：大洋两边，非洲和南美洲海岸线的互补性及某些地貌都显示出两大洲一度衔接在一起。答案：B3.The hot-spot theory may prove useful in explaining .A.the structure of the African platesB.the revival of dead volcanoesC.the mobility of the continentsD.the formation of

44、 new oceans解析：本题为段落理解题。第三段阐述了由于热点的作用，大洋是如何形成的。答案：D4.The passage is mainly about .A.the features of volcanic activitiesB.the importance of the theory about drifting platesC.the significance of hot spots in geophysical studiesD.the process of the formation of volcanoes解析：本题考查综合理解能力。本文主要论述了热点在地质形成过程中的重

45、要作用。答案：DCSabine Island,near Greenland,was first discovered by the British geographer Sir Edward Sabine in 1823,but an 1869 map showed it was actually a quarter of a mile farther west than its discoverer had mapped.This interested Alfred Wegener,a young geographer working in Greenland in 1910.He thou

46、ght the error was too great to be explained.Wegener himself took measurements and found that since 1869 the island had moved another five-eighth of a mile.After checking the position of other Arctic landmasses,he concluded that all of them were drifting westward at different speeds.From this finding

47、,Wegener developed his floating continent theory.He imagined an original super-continent making up the infant（未成年的） earth,finally the mass broke up into several piecesthe present continents.The continents do seem to fit together like pieces of a puzzle,and whats more,some of the mountain ranges（山脉）

48、of different continents line up rather well,as if the landmasses were at one time connected.However,believable as Wegeners argument appeared,many geographers refused to accept it.Exactly how the continents were formed is still a leading mystery in geography,though today many geographers are returnin

49、g to the continental drift theory.1.Sabine Island was first discovered and mapped by .A.the map makers of 1869B.geographers of GreenlandC.a British geographerD.Alfred Wegener解析：本题为细节题。文章第一句“Sabine Island.was first discovered by the British geographer”以及“but an 1869 map showed it was actually a quart

50、er of a mile farther west than its discoverer had mapped”可知，英国地理学家Sir Edward不仅发现了Sabine Island，而且绘制了地图。答案：C2.Wegeners discovery led him to conclude that .A.both the two earlier maps were in errorB.the Arctic landmasses were slowly drifting westwardC.all the continents were drifting slowly away from

51、one anotherD.Sabine Island was one part of Greenland解析：本题为细节题。从第二段最后一句“After checking the position of other Arctic landmasses,he concluded that all of them were drifting westward at different speeds.”可知答案。答案：B3.From the passage we can conclude that .A.Wegener liked to make things for grantedB.Wegene

52、r had a true scientific attitudeC.how the continents were formed is found outD.the continental drift theory needs further testing解析：本题为推理判断题。从文中看，Wegener的大陆漂移学说是有科学依据的，说明他有实事求是的科学态度，而不是想当然。答案：BDBy the Louisiana Purchase of 1803 the United States bought from France a vast area of some 828 000 square

53、miles.This was one of the biggest land purchases in history.The area stretches from the Mississippi River in the east to the Rocky Mountains in the west and from the Gulf of Mexico in the south to the United StatesCanadian border in the north.This territory（领土） makes up a third of the United States.

54、It included,before territorial adjustment,all or parts of what were to become 15 States.This huge region was explored in the 16th century by the Spaniard.A Frenchman,in 1682,named it Louisiana in honor of his king,Louis XIV（1638-1715）.Early in the 18th century the French founded settlements along th

55、e Mississippi River.The most important one,New Orleans,was founded in 1718 on the east bank of the river,90 miles from its mouth.In 1732 the French Government took control of Louisiana.At the end of the French and Indian War（1754-1763） in North America,French lost its lands east of the Mississippi to the Britain.In an agreement France gave up Louisianathe French lands west of the Mississippi,and New Orleansto Spain.In the late 1