Unit1 Learning about language 分层作业（原卷版）

Unit1Period2LearningaboutlanguageⅠ.语境填词1.Thebacteriawerethenexaminedunderthe__________(显微镜).2.Thereisno__________(证据)thatthehousewhichtheyarelivinginbelongstoher.3.Customsofficialshavemadeaseriesof__________(相互矛盾的)statementsabouttheequipment.4.Togofromonerobotto__________(多种多样的)robots,youneedallthreeofthoseideas.5.Most__________(家庭)nowownatleastonecar.6.Sowhatwewoulddoisthatwewouldthenperforman__________(干涉).7.Accordingtoofficial__________(统计数字),thediseasekilledover500people.8.Theyreportthefindinginthelatestissueofthejournalof__________(流行病学)andcommunityhealth.9.Inremoteregions,theairis__________(干净的)andthecropsarefreeofpoisonousinsecticides.10.Whatwastheauthor’s__________(最初的)purposeofcollectingnewspaperarticles?II.选词填空belinkedto,betransformedinto,blame...for,intime,onceandforall,subscribeto,suspect...of,thanksto,onthedecrease,attendto1.Asaproverbgoes,“Wherethere’sawill,there’saway.”Oureffortswillpayoff__________.2.Theemploymentratehascontinuedtoriseinbigcities__________theeffortsofthelocalgovernment.3.Iwasthinkingthatmymumwould__________me__________notpreparingforthetest.4.Mymainreasonfor__________NewScientististokeeppacewithadvancesinscience.5.Itisasurprisethatthefarawayvillage__________afamoustouristcityinonlytenyears.6.Andtheirhopeis,obviously,toendthisconflict__________.7.WhenIwokeup,Ifoundmywatchgone.I__________Tom__________stealingit.8.Expertsbelievethattheillness__________theuseofpollutedwater.9.Thereweresomanycustomersthattheshopassistantscouldn’t__________themall.10.Thenumberofpoormenis__________astheeconomyisgrowing.I.单句语法填空1.Robertafelt__________(frustrate)andangryatthenews.2.Inrecentyears,thepopulationinthistown__________(decrease)to100,000.3.ItwasEmmawhowas__________(blame)fortheaccident.4.Exercisingmakesyoumoreawakeandready__________(handle)whateverisaheadofyoufortheday.5.Theresultwillhelptopredictsomemajorand__________(severely)diseasesandyourpreferencefordiet.6.Theyhelpthebodydefenditselfagainstsomekindsof__________(infect).7.Myideais__________weshouldstartmakingpreparationsrightnow.8.IfI’mabitsleepyinthelecture,it’s__________Iwasupallnightyesterday.9.Theproblemis__________shedidn’tgobackhomedirectlyyesterdayevening.10.Themountainvillageisnolonger__________itusedtobesinceahighwaywasbuilttenyearsago.II.语法填空阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。ThereturncapsuleofChina’sChang’e-5probetoucheddowninSiziwangBanner,northChina’sInnerMongoliaAutonomousRegion,Dec.17,2020.TheChang’e-5mission

1(successful)bringsbackChina’sfirstsamplescollectedfromthemoon.AsChina’smostcomplicatedspaceproject,theChang’e-5missionhasachievedthesamplingoutsidetheearthandreturningforthefirsttime.

2isanothermajorachievementinovercomingdifficultiesbygivingfullplaytothe3

(advantage)ofthenewnationwidesystem,markingagreatstepforwardinChina’sspaceindustry.Thiswillcontributetodeepeningthe4(understand)oftheoriginofthemoonandtheevolutionhistoryofthesolarsystem.Notingthatthereisnoendforspaceexploration,allmembers5participatedintheChang’e-5mission6(carry)

forwardthelunarexplorationspiritofpursuingdreams,daringtoexplore,cooperatingintacklingdifficultiesandwin-wincooperation,soastostartnewinterplanetary(太阳系内的)explorationandcontributetobuildingthecountryintoamajorpowerinspaceandthebuildingofacommunitywitha

7(share)futureforhumanity.Chang’e-5missionhasachievedmanymajorbreakthroughsincludingChina’sfirstlunarsurfacesamplingandsealing,firstliftoff8themoon,firstrendezvousanddocking(交会和对接)inlunarorbit,andfirstspacecraftcarryingsamples9

(re-enter)theEarth’satmosphere.ThesuccessoftheChang’e-5mission10(mark)aconclusionofChina’scurrentlunarexplorationproject.Ⅰ.阅读理解Alivingrobothasbeencreatedoutoffrogskincells.Xenobots,namedafterthefrogspeciesXenopuslaevis(非洲爪蛙)thatthecellscomefrom,werefirstdescribedlastyear.Nowtheteambehindtherobotshasimprovedtheirdesignanddemonstratednewcapabilities.Tocreatethexenobots,MichaelLevinatTuftsUniversityinMassachusettsandhiscolleaguesobtainedtissuefrom24­hour­oldfrogembryosafterverysmallphysicaloperation.Wherethepreviousversionreliedonthecontraction(收缩)ofheartmusclecellstomovethemforwardbypushingoffsurfaces,thesenewxenobotsswimaroundfaster.Theyalsolivebetweenthreeandsevendayslongerthantheirpreviousgeneration,whichonlylastedaboutsevendays,andhavetheabilitytosensetheirsurroundingstosomeextent,turningredwhenexposedtobluelight.“Thefundamentalfindinghereisthatwhenyoufreeskincellsfromtheirnormalcontext,andyougivethemachancetobuildotherthingsthanwhattheynormallybuild,”saysLevin.“Tome,oneofthemostexcitingthingshereisthattheyareplastic.Thisideaisthatevennormalcells,notgeneticallymodified,areinfactcapableofbuildingsomethingcompletelydifferent.”Becausetheyarecreatedfromcells,thexenobotseventuallybreakapartandaretotallybiodegradable(能生物降解的),saysteammemberDouglasBlackiston,alsoatTuftsUniversity.Hethereforehopesthattheycanbeusedforbiomedicalandenvironmentalapplications.Previousattemptsatcreatinglivingrobots,suchasawirelesslycontrolledcockroach,haveinvolveddealingwithliveanimals,raisingethical(伦理的)concerns.Xenobotsdifferfromthesebecausetheyaremadeentirelyoflivingcells.“Theapproachhereismaybeethicallytheleastproblematicbecauseeverythingstartswithcells.Theyhavenoneurons(神经元),soit’snotananimal,”saysAukeIjspeertattheSwissFederalInstituteofTechnologyatLausanne,whowasn’tinvolvedintheresearch.“It’sreallycells,soIfinditmaybethecleanestway.”1.Howwerethenewxenobotscreated?A.Bymakinguseoffrogembryos. B.Byrelyingonheartmusclecells.C.Bysensingsimilarsurroundings. D.Byexposingthemtobluelight.2.Whichhasthesimilarmeaningtotheunderlinedword“plastic”inParagraph3?A.Fragile. B.Stable. C.Flexible. D.Active.3.WhatcanbeinferredfromDouglasBlackiston’swords？A.Thexenobotscan’tbreakdowneasily. B.Thexenobotsneedtobefurtherperfected.C.Thexenobotscanbeappliedinotherfields. D.Thexenobotshavealreadybeenwidelyused.4.Whatcanwelearnfromthelastparagraph?A.Thenewapproachstartswithsomeneurons. B.Xenobotshaveraisedleastethicalconcerns.C.Thewireless­controlledcockroachisafailure. D.Previouslivingrobotsinvolvefewlivinganimals.II.七选五CharacteristicsofanexcellentscientistTheFreeDictionarydefines(定义)ascientistasapersonhavingprofessionalknowledgeononeormoresciences,especiallynaturalscienceorphysicalscience.1Let’slookatsomecharacteristicsofanexcellentscientist.Curiosity.2ScientistssuchasThomasEdisonandGeorgeWestinghousediscoveredthingsmainlybecausetheywantedtoknowhowthingswork.Ifascientistdoesn’thavethedrivetoaskquestionsorevenwonder,thenhe/shenevergetstothefirststageofthescientificprocess.Patience.3Thereareveryfewjobsthattakelongerthanthisone.Evenifyouthinkyouhavereceivedsomeeducationonscience,youstillhavealotofscientificresearchtodo.Ifyou’reaninstant-gratification(及时满足的)typeofperson,thismaynotbethebestchoiceforyou.Ethical(道德的)qualities.Inordertotrulydiscoveranduseknowledgeforthegreatergood,ascientistmusthaveadesiretoimprovepeople’slifeaswellastheenvironmentandlivingthings,sincetheyarealllinkedandtheycanaffectoneanotherinthelongrun.Ascientistmustreportfindingshonestlyregardlessofpersonaloroutsidecommercial(商业的)interests.Stickingtoanoldbeliefcontradicted(反驳)byevidenceisdishonest.4Workinghabits.Anexcellentscientisteventakesnotesofthesmallestobservation,keepingitinmindandrecordingit.5He/Shealsoneedstocommunicatethoughtsonpaperandverbally.Networkingskillsconnecthim/herwithcolleaguesworkingonsimilarprojectswherehe/shemaydiscoversomethingnew.A.Tomakediscoveriesinhumanknowledge,youhavetothinkdifferently.B.Anexcellentscientistmustbeverycuriousaboutthings.C.Oneofthemainplacesthatmanyscientistsworkinistheresearchlaboratory.D.However,thatbeliefshouldn’tbechangedwithoutpowerfulevidence.E.He/Shecanworkwellaloneoringroups,dependingonwhat’sneeded.F.Becomingascientisttakesalongtime.G.Italsodefinesascientistassomeonewhousesscientificmethods.III.完形填空Asevereoutbreakofcholera(霍乱)castashadowoverLondoners’life.Facedwithtwoapparentlycontradictorytheoriesaboutthepossiblecause,JohnSnow,abrilliant1scientist,wasdeterminedto2thediseaseonceandforall.Insteadofusingamicroscopetostudythe3,hemarkedonamapwherethevictims4.Henoticedthatmultipledeathswerenearthewaterpump(水泵)inBroadStreet5somehouseholdswhodrankfreebeergivenbythepubtheyworkedin.JohnSnow6thatthepumpwaterwastoblamebutstillheneededconcrete7.Hehadthehandleofthepump8sothatitcouldnotbeused.Throughthis9,thediseasewasimmediatelyundercontrol.JohnSnowsubscribedtotheviewthattherewasalinkbetweenthe10

andtheBroadStreetoutbreak.Hecontinuedtodiscoverthatthewaterhadbeen11byraw