1、Unit 2-单元提优测试卷单元提优测试卷时间：100 分钟满分：120 分选择题部分第二部分第二部分阅读理解阅读理解(共两节，满分共两节，满分 40 分分)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 和 D 四个选项中，选出最佳选项。AThe plan:turn the Mars into a blue world with streams and green fields,and thenfill it with creatures from the earth.This idea may sound like something fro
2、m sciencefiction,but it is actually being taken seriously by many researchers.This suggests thefuture for the “red planet” will be the main topic for discussion at an internationalconference hosted by NASA this week.Leading researchers as well as science fictionwriters will attend the event.It comes
3、 as NASA is preparing a multi-billion-dollarMars research programme.“Turning the Mars into a little earth has long been a topic in science fiction,”saidDr Michael Meyer,NASAs senior scientist.“Now,with scientists exploring thereality,we can ask what are the real possibilities of changing the Mars.”
4、Mostscientists agree that the Mars could be turned into a little earth,although much timeand money would be needed to achieve this goal.But many experts are shocked by theidea.“We are destroying our own world at an unbelievable speed and now we aretalking about ruining another planet,” said Paul Mur
5、din from the Institute ofAstronomy,Cambridge,UK.Over the past months,scientists have become increasingly confident they willfind Martian life forms.Europe and Americas robot explorers have found the proofthat water,mixed with soil,exists in large amounts on the planet.In addition,two different group
6、s of scientists announced on March 28 that theyhad found signs of methane (甲烷) in the Martian atmosphere; the gas is a wasteproduct of living creatures and could be produced by microbes (微生物) living in thered planets soil.But scientists such as Dr Lisa Pratt,a biologist at IndianaUniversity,say that
7、 these microbes will be put in danger by the little earth project.“Before we have even discovered if there is life on the Mars,we are talking aboutcarrying out projects that would destroy all these native life forms,all the strangemicrobes that we hope to find buried in the soil,” said Dr Pratt.Moni
8、caGrady,aplanetaryscientistattheNaturalHistoryMuseum,London,shares this view.“We cannot risk starting a global experiment thatwould wipe out the precious information we are looking for,” she said.“This is justwrong.”1.What is the passage mainly about?A.Aplan turning the Mars into a little earth.B.Th
9、e necessity of changing the Mars.C.Finding water on the Mars.D.The Mars supporting life.2.Why is Dr Lisa Pratt against the plan?A.Water has been found on the Mars.B.It will cost too much money and work.C.The native life forms on the Mars would be destroyed.D.The earth is being destroyed at an unbeli
10、evable speed.3.What could prove the existence of microbes living in the Marssoil?A.Liquid water on the Mars.B.Some creatures on the Mars.C.Alot of good soil on the Mars.D.Signs of methane in the Marsatmosphere.4.What can we infer from the passage?A.Water is a key factor for life; without it,living o
11、n the Mars would be impossible.B.The project wont affect the native life forms supposed to live on the Mars.C.The idea turning the Mars into a little earth is nothing but science fiction.D.Monica Grady is in favour of carrying out the little earth project.BIf you could travel in time,where would you
12、 go?Perhaps you would watch anoriginal performance of a Shakespeares play in Elizabethan England?What about hanging out with Laozi in the Spring and Autumn Period?Or maybeyoud voyage far ahead of the present day to see what the future holds.The possibilityof time travel is indeed appealing.Stories e
13、xploring the subject have been around forhundreds of years.Perhaps the best known example is science fiction novel The TimeMachine,which was written by H.G.Wells and published in 1895 for the first time.Itwas adapted into at least two feature films of the same name,as well as two televisionversions,
14、and a large number of comic book adaptations.It is generally credited withthe popularization of the concept of time travel using a vehicle that allows an operatorto travel purposefully and selectively.The term “time machine”,coined by Wells,isnow universally used to refer to a vehicle transporting p
15、eople into the far future.But could time travel actually be possible?Some scientists say yes,in theory.Theypropose using cracks in time and space called “wormholes”,which could be used asshortcuts to other periods.Einsteins theory of relativity allows time travel in extremecircumstances.And British
16、physicist Stephen Hawking says you could travel into thefuture with a really fast spaceshipgoing at nearly the speed of light.Though buildingsuch a spaceship would of course be no simple task.Even if you could travel into the past,there is something called the “grandfatherparadox”.It asks what would
17、 happen if a time traveler were to go back in time andhave his own grandfather killed for some reason,and therefore prevent himself frombeing born.If the time traveler wasnt born,how would he travel back in time?And would you really like to visit the future?In H.G.Wells book,the maincharacter travel
18、s into distant time where he arrives at a beach and is attacked by giantcrabs.He then voyages 30 million years into the future where the only living thing is ablack object with tentacles(触角).If thats whats in store,maybe we are better justliving in the present day after all.5.The novel The Time Mach
19、ine mentioned in Paragraph 2 aims to show.A.peoples interest in time travelB.the special feature of the bookC.the long history of time travelD.the contribution of H.G.Wells6.Einsteins and Hawkings theories.A.have similarities in many waysB.push the invention of the first spaceshipC.have proved wrong
20、 by some time travelersD.suggest the possibility to invent the time machine7.In Paragraph 4,“grandfather paradox” probably refers to the idea that.A.the traveler is prevented from meeting his grandfatherB.the traveler goes back in time to seek for his grandfatherC.the grandfathers death makes the tr
21、avelers birth impossibleD.The reunion of the traveler and his grandfather brings happinessCNowadays six Amazon Scout delivery robots rolled out in a pilot program inSnohomish County,Wash.The robots carry meals,groceries and packages to homesand offices in this region just north of Seattle.They have
22、appeared on the sidewalks ofLondon,Beijing and other cities and communities worldwide.These machines mustovercome pedestrian legs,naughty dogs and broken pavement,which raises somequestions.These services are gaining attraction as a growing number of city residentsexpect immediate or scheduled deliv
23、ery for just about everything.Between 2017 and2018 online retail sales in the U.S.increased by 16 percent.On the final step of allthese deliveries,called the last mile,humans on bicycles,motorized scooters (电动车)or large delivery trucks typically deliver packages.All the vehicles compete for spaceon
24、busy urban streets.“Deliveries are trending upwards in all crowded city centers,andif city and state leaders dont start thinking about creative solutions like robotdeliveries,we can expect even worse traffic jams,” says Paul Mackie,director of atransportation policy research center in Arlington.A st
25、udy by this center found 73 percent of delivery vehicles in Arlington wereparked outside of authorized areas,often blocking bike lanes and crosswalks.Bymoving the last step of deliveries from the road to the sidewalk,cities could reducetraffic jams and solve the parking problem entirely,Mackie says.
26、Companies such as Amazon are not developing this delivery technology simplyto clear up urban traffic.Self-driving vehicles and sidewalk robots could cut downlast-mile delivery costs in cities by as much as 40 percent,according to a 2018 reportbyaconsultancyfirm.A deliveryrobotcancostthousandsofdolla
27、rstomanufacture,and most currently require human management and conservation.But inthe long run companies that use autonomous delivery vehicles in the next severalyears could end up saving billions of dollars,the report stated.8.Why does Amazon introduce delivery robots?A.To amuse its customers.B.To
28、 avoid pedestrians,dogs and broken pavement.C.To meet the increasing demand of delivering packages.D.To confirm the companys innovation spirit.9.What does Paul Mackie mean by his words in Paragraph 2?A.Retail sales in the U.S.increased fast.B.Deliveries stay steady in all crowded city centers.C.Rega
29、rdless of robot deliveries,traffic jams will remain the same.D.Robots can help ease the traffic pressure.10.What can robots delivery bring to the city?A.Block bike lanes and crosswalks.B.Relieve urban traffic as well as save delivery costs.C.Increase danger to pedestrians.D.Lead to traffic jams.11.W
30、hich word can best describe the future of the robot delivery?A.Uncertain.B.Hopeless.C.Promising.D.Unacceptable.DCan you imagine a cloud floating in the middle of your room?Do you want toknow what it feels like to fly like a bird?Find your answers in Time Magazines 25“Best Inventions”.Here,we have pi
31、cked out the most interesting 4 to share with you.Talking GlovesEver felt confused by the sign language used by disabled people?Here is the“helping hand” you need.Four Ukrainian students have created a pair of gloves thathelps people with hearing and speech problems communicate with others.The glove
32、sare equipped with sensors that recognize sign language and translate it into text on asmartphone.Then the smartphone changes the text to spoken words.Google GlassesGoogle Glasses are like a computer built into the frame of a pair of glasses.Withits 1.3-centimeter display,the glasses allow you to su
33、rf the Internet and make callswithout even lifting a finger.The glasses also have a camera and GPS mappingsystem.Users can take and share photos,check maps and surf the Internet just bylooking up,down,left and right.Indoor CloudsIts not virtual.Thats a real world.Dutch artist Smilde managed to creat
34、e a smallbut perfect white cloud in the middle of a room using a fog machine.But it requiredcareful planningthe temperature,humidity( 湿 度 )and lighting all had to be justright.Once everything was ready,the cloud formed in the air with the machine.But itonly lasted for a short while.WingsuitsThe suit
35、 fulfills your dreams of flying like a bird.Well,not exactly flying,butgliding(滑翔)through the air.It increases the surface area of the human body,whichmakes it easier for people to float in the air.Fliers wearing wingsuits can glide onekilometer in about 30 seconds.12.How can users of Google Glasses
36、 surf the Internet?A.By moving the mouse.B.By tapping the keyboard.C.By pressing the button.D.By moving the eyeballs.13.Which of the following can help you fly?A.Talking Gloves. B.Google Glasses.C.Wingsuits.D.Indoor Clouds.14.What is the authors purpose in writing the passage?A.To introduce some int
37、eresting inventions.B.To encourage people to buy these products.C.To draw peoples attention to technology.D.To bring some pleasure to young readers.15.Who will probably be the users of “Talking Gloves”?A.Disabled people.B.Normal people.C.Trained people. D.Working people.第二节(共 5 小题；每小题 2 分，满分 10 分)根据
38、短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。The man who could see the futureThe ability to predict the future is a rare talent.American author Isaac Asimov(19201992),one of the great science fiction writers of his age,had such a talent.1Now that were here,lets see what he got right.2Asimov thought comput
39、ers would cause a revolution comparable to theindustrialrevolutionofthe19thcentury.Specifically,hesaidthat“mobilecomputerized objects” would be an important part of everyday life.Here,he clearlypredicted our world of smartphones,tables and other devices.He also had a great dealto say about space exp
40、loration.3How did Asimov develop his special sense of future developments?4Heread the newspapers and magazines sold in his parents candy store.His scientificinterest gained sharper focus at Columbia University in New York.Asimov went tostudy chemistry,but became bored with pure laboratory science.In
41、stead,he thoughthard about the social implications(作用) of science.He wanted to communicate hisideas to the public.5Asimov had his finger on the pulse(脉搏)of both scientific and socialchange.He had a clear vision of what was coming around the corner for humanity inhis works like the Galactic Empire se
42、ries(银河帝国系列).“His predictions areabsolutely fascinating,” Calum Chase,an English writer,told BBC News.“He was agenius.”A.As a smart boy,Asimov taught himself to read at the age of five.B.Space exploration really can make our life more convenient and comfortable.C.Back in 1983,he was asked to predict
43、 what the world would look like in 2019.D.On the role that computing would play in the future,he was amazingly accurate.E.Asimov has developed a great interest in computer programming since childhood.F.As an author,his books would feature the theme of social change caused bytechnology.G.The Internat
44、ional Space Station proves his prediction that we would not simplyvisit space but seek to stay there.第三部分第三部分语言运用语言运用(共共三三节，满分节，满分 40 分分)第一节完形填空(共 15 小题；每小题 2 分，满分 30 分)阅读下面短文，从短文后各题所给的 A、B、C 和 D 四个选项中，选出可以填入空白处的最佳选项。A story spread around that a 13-year-old boy fell into a river of sewage(下水道)and wa
45、s saved by rescuers.The boy,Phil,was1more than 12 hours in thecitys dangerous underground sewage system.It is2with waste liquids andother waste materials,which were poisonous.Phil had been playing at a public park with other3during a familygathering on Sunday.At one point,the children were on pieces
46、 of wood that4anopening leading to the sewage system.One of the wooden boards5.The boy fellabout eight meters down and landed in fast-moving waste water.The other children6told adults what had happened.The adults then calledan emergency telephone line for help.Rescuers immediately began7Philundergro
47、und.They set cameras on floatation devices,which they put into the sewagesystem.Rescuers finally8Phil after seeing images of handprints on a pipe.A crewof sanitation(卫生系统)workers hurried to the9and opened a hole.The firstthing they heard was “Help!”The crew lowered down a10rope to Phil.The boy held
48、onto the rope whileworkers11him up.By the time workers found Phil,about 700 meters of pipeshad been12during a 12-hour period.Phil was found less than two kilometersfrom where he fell in.He was taken to a13for a full physical examination andto be reunited with his14.More than 100 people took part in
49、the15of Phil.Phil was able to find asmall area of breathable air and waited there until he was found.1.A.keptB.hiddenC.trappedD.shut2.A.filledB.facedC.comparedD.occupied3.A.visitorsB.kidsC.strangersD.parents4.A.carvedB.fixedC.connectedD.covered5.A.brokeB.sankC.existedD.survived6.A.seriouslyB.eventua
50、llyC.quicklyD.exactly7.A.searching forB.caring aboutC.turning toD.calming down8.A.liftedB.stuckC.foundD.caught9.A.waterB.areaC.blockD.street10.A.thinB.shortC.looseD.long11.A.pulledB.packedC.pickedD.waked12.A.judgedB.selectedC.removedD.inspected13.A.parkB.schoolC.hospitalD.club14.A.friendsB.familyC.c
