新理念50英语学习大厅综合教程第三册Unit8.docx
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新理念50英语学习大厅综合教程第三册Unit8.docx
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新理念50英语学习大厅综合教程第三册Unit8
综合教程部分
第八单元:
卷A
全新版第二版综合B3U8-A
PartIListeningComprehension(16minutes)
SectionA
Directions:
Inthissection,youwillheartenstatements.Numbers1to6arebasedonTextAwhiletherestarebasedonTextB.EachstatementwillbereadONLYONCE.Listencarefullyanddecidewhethereachstatementistrueorfalse.
1.
A)T
B)F
Script:
Itwasabsolutelyhorrifyingfortheauthorwhenhismotherlosthereyesightandmostofherabilitytowalk.
正确答案:
A
2.
A)T
B)F
Script:
In2004and2005itwasknownthatHwangWoo-Suksucceededincreatinghumanembryonicstemcellsbycloning.
正确答案:
B
3.
A)T
B)F
Script:
Humanreproductivecloningisjustsimplywrongethicallyfromamedicalstandpointandascientificstandpoint.
正确答案:
A
4.
A)T
B)F
Script:
Themajorityofreproductiveclonesinotherspeciesareactuallynormal,withoutmiscarriagerates,stillbirthrates,fetalanomalies,deathsoonafterbirth,etcetera.
正确答案:
B
5.
A)T
B)F
Script:
Therapeuticcloningdoesinvolverisktohumanlife,providingtremendouspotentialforthereliefofsufferinginrealhumanbeings.
正确答案:
B
6.
A)T
B)F
Script:
There’sreallynoeffectivewayforanindividualscientisttostopsomeoneelsefromusingtheknowledgeforsomethingtheyshouldn’t.
正确答案:
A
7.
A)T
B)F
Script:
Dollywascreatedinthelaboratoryfromasinglecellof“parent”.
正确答案:
A
8.
A)T
B)F
Script:
Californiaenactedabanonhumancloning,andthePresident'sNationalBioethicsAdvisoryCommissionrecommendedmakingthebannationwide.
正确答案:
A
9.
A)T
B)F
Script:
TheauthorsubscribestotheviewthattheConstitutionnecessarilyguaranteeseveryindividualtherighttoreproducethroughanypossiblemeans.
正确答案:
B
10.
A)T
B)F
Script:
Tobancloningmay,intheend,lendsupporttostrikinglysimilarobjectionstosurrogatemotherhood.
正确答案:
A
SectionB
Directions:
Inthissection,youwillhearapassagethreetimes.Whenthepassageisreadforthefirsttime,youshouldlistencarefullyforitsgeneralidea.Whenthepassageisreadforthesecondtime,youarerequiredtofillintheblankswiththeexactwordsyouhavejustheard.Finally,whenthepassageisreadforthethirdtime,youshouldcheckwhatyouhavewritten.
ToHumanGenomeProjectresearchers,cloningreferstocopyinggenesandotherpiecesofchromosomestogenerateenough(11)_________________materialforfurtherstudy.Twoothertypesofcloningproducecomplete,(12)_________________identicalanimals.Blastomereseparation(sometimescalled"(13)_________________"afterthenaturallyoccurringprocessthatcreatesidenticaltwins)involvessplittingadevelopingembryosoonafter(14)_________________oftheeggbyasperm(sexualreproduction)togiverisetotwoormoreembryos.Theresulting(15)_________________areidenticaltwins(clones)containingDNAfromboththemotherandthefather.Dolly,ontheotherhand,istheresultofanothertypeofcloningthatproducesananimalcarryingtheDNAofonlyoneparent.Usingsomaticcell(16)_________________transfer,scientiststransferredgeneticmaterialfromthenucleusofan(17)_________________sheep’suddercelltoaneggwhosenucleus,andthusitsgeneticmaterial,hadbeenremoved.Onegoalofthisistodevelopefficientwaystoalteranimalsgeneticallyand(18)_________________.Alterationshaveincludedaddinggenes(suchasthoseforhumanproteins)tocreatedrug-producinganimalsaswellasinactivatinggenestostudytheeffectsandpossiblycreateanimalmodelsofhumandiseases.Cloningtechnologyalsomaybeusedtoraiseanimalshavinggeneticallyalteredorganssuitablefortransplantingtohumans.
ThetechniqueusedtoproduceDollyandotherclonedanimalsisanextensionof40yearsofresearchusingDNAfromnonhumanembryonicandfetalcells.Beforethis,scientistsbelievedthatonceacellbecamespecializedthechangewaspermanentand(19)_________________inthecellbecameinactive.Dolly’screatorsdemonstratedthatnucleiofanadultanimal’sspecializedcellscanbemadetoreverttoanon-specialized,embryonicstate,thus(20)_________________togiverisetoanykindofcell.
Script:
ToHumanGenomeProjectresearchers,cloningreferstocopyinggenesandotherpiecesofchromosomestogenerateenoughidenticalmaterialforfurtherstudy.Twoothertypesofcloningproducecomplete,geneticallyidenticalanimals.Blastomereseparation(sometimescalled“twinning”afterthenaturallyoccurringprocessthatcreatesidenticaltwins)involvessplittingadevelopingembryosoonafterfertilizationoftheeggbyasperm(sexualreproduction)togiverisetotwoormoreembryos.Theresultingorganismsareidenticaltwins(clones)containingDNAfromboththemotherandthefather.Dolly,ontheotherhand,istheresultofanothertypeofcloningthatproducesananimalcarryingtheDNAofonlyoneparent.Usingsomaticcellnucleartransfer,scientiststransferredgeneticmaterialfromthenucleusofanadultsheep’suddercelltoaneggwhosenucleus,andthusitsgeneticmaterial,hadbeenremoved.Onegoalofthisistodevelopefficientwaystoalteranimalsgeneticallyandreproducethemreliably.Alterationshaveincludedaddinggenes(suchasthoseforhumanproteins)tocreatedrug-producinganimalsaswellasinactivatinggenestostudytheeffectsandpossiblycreateanimalmodelsofhumandiseases.Cloningtechnologyalsomaybeusedtoraiseanimalshavinggeneticallyalteredorganssuitablefortransplantingtohumans.
ThetechniqueusedtoproduceDollyandotherclonedanimalsisanextensionof40yearsofresearchusingDNAfromnonhumanembryonicandfetalcells.Beforethis,scientistsbelievedthatonceacellbecamespecializedthechangewaspermanentandotherunneededgenesinthecellbecameinactive.Dolly’screatorsdemonstratedthatnucleiofanadultanimal’sspecializedcellscanbemadetoreverttoanon-specialized,embryonicstate,thusrestoringtheabilitytogiverisetoanykindofcell.
正确答案:
identical
正确答案:
genetically
正确答案:
twinning
正确答案:
fertilization
正确答案:
organisms
正确答案:
nuclear
正确答案:
adult
正确答案:
reproducethemreliably
正确答案:
otherunneededgenes
正确答案:
restoringtheability
PartIIReadingComprehension(25minutes)
SectionA
Directions:
Inthissection,thereisapassagewithseveralblanks.Youarerequiredtoselectonewordforeachblankfromalistofchoicesgiveninawordbankfollowingthepassage.Readthepassagethroughcarefullybeforemakingyourchoices.Eachchoiceinthebankisidentifiedbyaletter.Youmaynotuseanyofthewordsinthebankmorethanonce.
IalwaysthoughtthatwhenourresearchwassuccessfulthatIwouldjustbepleasedthatwehad21thiswhenothershadnot.Inreality,itis22—whenyoulookthroughthemicroscope,youseewhatyoumayhavelookedlikealongtimeago,atleastinpart.
WhenIlookeddownandsawthatcloned23,itbroughttearstomyeyes.Ihaddonethisformymother,andIrealized,24sheonlybeenabletoliveafewyearslonger,maybewecouldhaveusedthistechnologytohelpher.Itwas25toseethatpotential,whichsheneverhadachancetoexperience.
There’sabig26outtherethatwedecidedtodestroytheseembryosforsomereason.Therewassomuch27aboutthisprocessbecauseofthescientific28fromthepastthatitwascriticalthattherebenodoubtthattheywereclones.
Intheprocessofanalysis,theembryosweredestroyedby29.Inotherwords,togetthe30materialfrominsidethecellstoanalyzeit,youhavetodestroythecell.
A)ifB)geneticallyC)fraudD)transparent
E)emotionF)transcendentG)blastocystH)skepticism
I)emotionalJ)skepticalK)misconceptionL)genetic
M)hadN)necessityO)accomplished
21.______________________
正确答案:
O
22.______________________
正确答案:
F
23.______________________
正确答案:
G
24.______________________
正确答案:
M
25.______________________
正确答案:
I
26.______________________
正确答案:
K
27.______________________
正确答案:
H
28.______________________
正确答案:
C
29.______________________
正确答案:
N
30.______________________
正确答案:
L
SectionB
Directions:
Thereareseveralpassagesinthissection.Eachpassageisfollowedbysomequestionsorunfinishedstatements.ForeachofthemtherearefourchoicesmarkedA),B),C)andD).Youshoulddecideonthebestchoice.
PassageOne
Questions31to35arebasedonthefollowingpassage.
Withonlyabout1,000pandasleftintheworld,Chinaisdesperatelytryingtoclonetheanimalandsavetheendangeredspecies.That’samovesimilartowhataTexasA&MUniversityresearcherhasbeenundertakingforthepastfiveyearsinaprojectcalled“Noah’sArk.”
Dr.DuaneKraemer,aprofessorinTexasA&M’sCollegeofVeterinaryMedicineandapioneerinembryotransferworkandrelatedprocedures,sayshesalutestheChineseeffortand“Iwishthemallthebestsuccesspossible.It’saworthwhileproject,certainlynotaneasyone,andit’sverymuchlikewhatwe'reattemptinghereatTexasA&M—tosaveanimalsfromextinction.”
Noah’sArkisaimedatcollectingeggs,embryos,semenandDNAofendangeredanimalsandstoringtheminliquidnitrogen.Ifcertainspeciesshouldbecomeextinct,Kraemersaystherewouldbeenoughofthebasicbuildingblockstoreintroducethespeciesinthefuture.
Itisestimatedthatasmanyas2,000speciesofmammals,birdsandreptileswillbecomeextinctoverthenext100years.Thepanda,nativeonlytoChina,isindangerofbecomingextinctinthenext25years.
Thisweek,Chinesescientistssaidtheygrewanembr
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