Unit 3 单元测试题文档格式.docx
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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)
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)
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)
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