Unit 3 单元测试题.docx

Unit 3 单元测试题.docx

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Unit3单元测试题

Unit3单元测试题

SECTIONA（10marks）

Directions:

BeneatheachofthefollowingsentencestherearefourchoicesmarkedA,B,CandD.Choosetheonethatbestcompletesthesentence.

21.IwastoldthatRosesaidsomethingreallybadbehindmyback.Ifelt__________andupset.

A.betrayingB.betraysC.betrayedD.beingbetrayed

22._________togotoakeyuniversity,heworkshardandistryinghisbesttoimprovehisEnglish.

A.BeingdeterminedB.Determined

C.HavingdeterminedD.Todetermine

23.Somescientistspointoutthatifyoucloneanembryo,youcanproducevaluablehumantissuescouldbeusedtosavehumanlives.

A.thatB./C.whatD.forwhich

24.ThefirstmammalsuccessfulfromanadultwasDollythesheep.

A.beingclonedB.havingbeenclonedC.tobeclonedD.cloning

25.Theresearchissodesignedthatonce__________nothingcanbedonetochangeit.

A.beginsB.havingbegunC.beginningD.begun

26.Mysuggestionisthatwe__________tocutbackonproductionandreducetheamountofthingswemakeandbuy.

A.tryB.triedC.oughttryD.musttry

27.Heisgoodatallhissubjectsand____________goingtoatopuniversity.

A.inhiswayB.onhiswaytoC.byhiswaytoD.bywayof

28.Therapiddevelopmentplushugepopulationgrowthhasmeantthatnotonlyistheamountofwatertakenfromtheriverrising,butthewastebeingputbackintotheriver___________.

A.haveincreasedB.hadincreased

C.hasbeenincreasingD.wasincreased

29.Tomcametotheteacher’sofficeandmadeanapology_________hisclassteacher________hisbeinglateforschool.

A.to,forB.to,toC.for,toD.for,for

30.__________aroundthelab,theforeignersweretakentovisitthelibrary.

A.HavingshownB.Havingbeenshown

C.BeingshownD.Theyhadbeenshown

31.—Ifsomeonehadwarnedhim，he______thatfood.

—Luckilyhewassenttothehospitalimmediately.

A.wouldnottakeB.wouldnothavetaken

C.hadnottakenD.hadnottaken

32.WhiletherehasbeenresearchinGManimalssuchaspigs,noGMmeatatpresent.

A.soldB.isbeingsoldC.willsellD.isselling

33.Havingatripabroadiscertainlygoodfortheoldcouple,butitremains_________whethertheywillenjoyit.　　

A．tosee　　B．tobeseen　C．seeing　　D．Seen

34._____theearth’spopulation,weshouldhavefewerbabies,notcloningmore.

A.ReducingB.BeingreducedC.ReducedD.Toreduce

35.I’mheretosayisthatahealthyenvironmentanddevelopmentshouldbepossibleatthesametime.

A.ThatB.WhichC.WhatD./

SECTIONB（18marks）

Directions:

Foreachblankinthefollowingpassagethereare4wordsorphrasesmarkedA,B,CandD.Fillineachblankwithawordorphrasethatbestfitsthecontext.

Thefriendshipbetweenusneverfades.MaryAllenwasmybestfriend—likeasisterIneverhad.Wedideverythingtogether:

pianolessons,movies,swimming,horsebackriding,andsoon.

WhenIwas13,myfamilymoved.MaryandI36intouchthroughletters,andwesaweachotheronspecial37—likemyweddingandMary’s.Soonwewere38withchildrenandmovingtonewhomes,andwewroteless.OnedayacardthatIsentcameback,39“AddressUnknown.”Ihadnoideahowto40Mary.

Overtheyears,IthoughtofMaryoften.Iwantedto41storiesofmychildrenandthengrandchildren.Ineedtosharemy42whenmybrotherandthenmymotherdied.TherewasanemptyplaceinmyheartthatonlyafriendlikeMarycould43.

OnedayIwasreadinganewspaper44InoticedapictureofayoungwomanwholookedalotlikeMaryandwhoselastnamewasWagman—Mary’smarriedname.“TheremustbethousandsofWagmans,”Ithought,45Iwrotetoheranyway.

Shecalledassoonasshegotmyletter.“Mrs.Tobin!

”shesaidexcitedly,“MaryAllenWagmanismymother”.MinuteslaterIheardavoicethatI46atonce,evenafter40years.Welaughedandcriedandaskedabouteachother’s47.

Nowtheemptyplaceinmyheartisfilled,andthereisonethingthatMaryandIknowforsure:

Wewon’tloseeachotheragain!

36.AgotB.keptC.lostD.fell

37.A.placesB.occasionsC.festivalsD.things

38.A.comfortableB.carefulC.readD.busy

39.A.sayingB.writingC.readD.told

40.A.knowB.stopC.findD.help

41.A.shareB.speakC.writeD.remember

42.A.newsB.sorrowC.storiesD.failure

43.A.stayB.hideC.fillD.live

44.A.whenB.whileC.ifD.live

45.A.andB.sinceC.butD.so

46.A.realizedB.receivedC.contactedD.recognized

47.A.futureB.progressC.livesD.weddings

SECTIONC（12marks）

Directions:

CompletethefollowingpassagebyusingONEwordthatbestfitsthecontext.

Researchershaveclonedawiderangeofbiologicalmaterials,includinggenes,cells,tissuesandevenorganisms.

48thelast50years,scientistshaveconductedcloningexperimentsinawiderangeofanimalsusingavarietyoftechniques.In1979,researchersproducedthefirstgeneticallyidenticalmice49splitting（分开）mouseembryosinthetesttubeandthenimplantingtheresultingembryosintothewombsofadultfemalemice.50afterthat,researchersproducedthefirstgeneticallyidenticalcows,sheep51chickensbytransferringthenucleus（细胞核）ofacelltakenfromanearlyembryointoaneggthathadbeenemptiedofitsnucleus.

Itwasnotuntil1996,however,thatresearcherssucceeded52cloningthefirstmammalfromamaturecelltakenfrom53adultanimal.After276attempts,ScottishresearchersfinallyproducedDolly.Twoyearslater,researchersinJapanclonedeightcalvesfromasinglecow,54onlyfoursurvived.

55cattleandsheep,othermammalsthathavebeenclonedfromsomatic（physical）cellsinclude:

cat,deer,dog,horse,mule,ox,rabbitandrat.

READINGCOMPREHENSION（30marks）

Directions:

Readthefollowingthreepassages.Eachpassageisfollowedbyseveralquestionsorunfinishedstatements.Foreachofthemthereare4choicesmarkedA,B,CandD.Choosetheonethatfitsbestaccordingtotheinformationgiveninthepassage.

A

Oneday,anant（蚂蚁）wasdrinkingatasmallriverandfellin.Shetriedherbesttoreachthebank（河岸）butfailed.Thepoorantwastiredbutshedidn’tgiveupandthenabirdsawher.

Outofpity,thebirdthrewherapieceofgrass,whichsupportedherlikeaboat,sotheantreachedthebankagain.Whileshewasrestinganddryingherselfinthegrass,sheheardamancomenear.Hewaswalkingquietlywithaguninhishand.Assoonashesawthebird,hewishedtokillit.Butwhenheraisedhisguntofire,theantbit（咬）himinthefoot.Themanstoppedtoseewhathadhithim.Andthenthebirdflewaway.Itwasananimalmuchweakerandsmallerthanthebirdthathadsaveditslife.

（）56.Theantcouldnotreachthebankalthough_____.

A.shecriedforhelpB.shecouldfly

C.shetriedherbestD.shecouldsmellwell

（）57.Thebirdsavedtheantbecause_____.

A.shewastheant’sfriendB.shehadpityonthepoorant

C.theantwaskindD.theantwasclever

（）58.Theantsucceededingettingonthebankwiththehelpof_____.

A.aleafB.apieceofwoodC.apieceofgrassD.agun

（）59.Whenthemanraisedhisgun,_____.

A.hefeltsomethingbitinghiminthefootB.theanttoldthebirdtoleaveatonce

C.thebirdhidhimselfinthegrassD.thebirdimmediatelyflewaway

（）60.Wecanlearnfromthepassagethat_____.

A.weshouldn’tbelazyB.weshouldn’thavepityonothers

C.weshouldstudyhard

D.weshouldhelppeoplewhentheyareintrouble

B

Somescientistssaythatanimalsintheoceansareincreasinglythreatenedbynoisepollutioncausedbyhumanbeings.

Thenoisethataffectsseacreaturescomesfromanumberofhumanactivities.Itiscausedmainlybyindustrialunderwaterexplosions,oceandrilling,andshipengines.Suchnoisesareaddedtonaturalsounds.Thesesoundsincludethebreakingoficefields,underwaterearthquakes,andsoundsmadebyanimalsthemselves.

Decibels（分贝）measuredinwateraredifferentfromthosemeasuredonland.Anoiseofonehundredandtwentydecibelsonlandcausespaintohumanears.Inwater,adecibellevelofonehundredandninety-fivewouldhavethesameeffect.

Somescientistshaveproposedsettinganoiselimitofonehundredandtwentydecibelsinoceans.Theyhaveobservedthatnoisesatthatlevelcanfrightenandconfusewhales.

AteamofAmericanandCanadianscientistsdiscoveredthatloudernoisescanseriouslyinjuresomeanimals.Theresearchteamfoundthatpowerfulunderwaterexplosionswerecausingwhalesintheareatolosetheirhearing.Thisseriouslyaffectedthewhales'abilitytoexchangeinformationandfindtheirway.Someofthewhalesevendied.Theexplosionshadcausedtheirearstobleedandbecomeinfected.

Manyresearcherswhoseworkdependsonoceansoundsobjecttoalimitofonehundredandtwentydecibels.Theysaysuchalimitwouldmeananendtoimportantindustrialandscientificresearch.

Scientistsdonotknowhowmuchandwhatkindsofnoisesareharmfultooceananimals.However,manyscientistssuspectthatnoiseisagreaterdangerthantheybelieved.Theywanttopreventnoisesfromharmingcreaturesintheocean.

61.Accordingtothepassage,whichofthefollowingisincreasinglydangeroustoseacreatures?

A.Theman-madenoises.B.Thenoisesmadebythemselves.

C.Thesoundofearthquakes.D.Thesoundoftheice-breaking.

62.Whichofthefollowingisdiscussedinthethirdparagraph?

A.Differentplaceswithdifferenttypesofnoises.

B.Theveryhumanearssensitivetoalltypesofnoises.

C.Thesamenoisemeasureddifferentlyonlandand