专八模拟改错.docx
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专八模拟改错.docx
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专八模拟改错
英语专八改错突击练习
(1)
Oneimportantoutcomeoftheworkontheexpressionofgenesindevelopingembryosissuretobeknowledgethatcanhelppreventingbirthdefects.Justaspromising(26
isthepossibilityofunravelingthecomplicatedwriting(27)
ofthebrain.Amechanicgetsvaluableinsighthowan(28)
automobileworksbyrebuildingcarengines;similarly,neuroscientistscanlearnhowthebrainfunctionsfrom(29)
thewayitisputtogether.Thenextsteppursuingthe(30)
goalistofindouthowtheblueprintgenes,thehomeboxgenes,controltheexpressionofothergenesthatcreatethevalvesandpistonoftheworkingcerebralengine.
Theproteinencodedbythelattergenescouldchangethe(31)
stickinessofthecellsurface,theshapeofthecelloritsmetabolismtocreatethecharacteristicpeculiarto,say,neuronsorneural-crestcell.Surfaceproteinsmaybethe(32)
mechanism,wherebysimilarprogrammedcellssticktogethertoformspecificstructures;theymightalsosense(33)
thelocalenvironmenttohelpthecelldecidewhatistodo. Clarifyingthosemechanismswillengagethebesttalentsin(34)
embryologyandmolecularbiologyforsometimestocome.(35)
Whatisperhapsthemostintriguingquestionofallisifthebrainispowerfulenoughtosolvethepuzzleofitsowncreation.
英语专八改错突击练习
(2)
Citiescanbefrightenedplaces.Themajorityofthepopulationliveinnoisymassivetowerblocks.__1
Thesenseofbelongingtoacommunitytendstoappear whenyoulivethirtyfloorsupinaskyscraper. __2__
Strangeenough,whereasinthepasttheinhabitantsofonestreetallkneweachother, __3
nowadayspeopleonthesamefloorintowerblocksevensayhellotoeachother.__4
Countrylife,ontheotherhand,differsfromthiskindofisolatedexistenceinthatasenseofcommunitygenerallykeeptheinhabitantsofasmallvillagetogether. __5__
Peoplehavetheadvantageofknowingthatthereisalwayssomeonetoturntowhentheyneedhelp.So countrylifehasdisadvantagestoo.Forexample,shoppingbecomesamajorproblemand__6__foranythingslightlyoutoftheordinaryyouhavetogoforanexpeditiontothenearestlargetown. __7__
Thecountryhastheadvantageofpeacefulandquiet,butsuffersfromtheisadvantagesofbeingcutoff.__8__
Thecityhasnoiseandpopulationwhichdoharmtohumanhealth.Butoneof theirmainadvantagesisthat__9__
youareatthecentreofthingsandthatlifedoesn’tcometoanendevenattenatnight.Somepeoplehavefoundacompromisebe-tweenthetwo:
theyexpressedtheirpreferenceforthequietlifebyleavingforthecityandmovingtothe__10__
countrywithincommutingdistanceofthelargecity.
英语专八改错突击练习(3)
Successfulagingisapsychologicalfeat.Fearfordeath,forexample,maysometimesoppressyou.__1__
evenwhenthisissuccessfullyovercome,thereisstillsomethingforyoutodealwith-loneliness.Lonelinesscanspeedyourdemisenomatterconscientiouslyyoucareforyourbody.__2__
“Wegothroughlifesurroundedbyprotectiveconvoysofothers,”saysRobertKahn,apsychologistoftheUniversityofMichiganwhostudiedthehealtheffectsofcompanionship.__3__
“Peoplewhomanagetomaintainanetworkofsocialsupportdobest.”Onestudyofelderlyheart-attackpatientsfoundthatthosewithtwoormorecloseassociationsenjoyedtwice __4__
theone-yearsurvivalrateofthosewhowerecompletelyalone.Companionshipaside,
healthyoldstersseemtoshareaknackformanagingstress,poisonthatcontributesmeasurablytoheartdisease,__5__
cancerandaccidents.Researchershavealsobeenkinkedsuccessfulagingtomentalstimulation.__6__
Anidlebrainwilldeterioratejustassureasanunusedleg,__7__
notesDr.GeneCohen,HeadofthegerontologycenteratGeorgeashingtonUniversity.Butjustasexercisecanpreventmuscleatrophy,mentalchallengesseemtopreserve__8
boththemindandtheimmunesystem.Butwhatmostimpressesresearchers.whostudytheoldestoldishissimpledriveandresilience.“Peoplewhoreach100arenotquitters,”__9__
saysAdleroftheNationalCentenarianAwarenessProject.“Theysharearemarkableabilitytorenegotiatelifeineveryturn,toaccepttheinevitablelossesAndmoveon.”__10
英语专八改错突击练习(4)
IntheUnitedStatesthereare,strictspeaking,__1_
nonationalholiday,foreachstatemust,throughlegislativeenactmentorexecutiveproclamation,__2__
appointthedaywhicheachholidayiscelebrated.Congressandthepresidentmayestablishlegalholidays__3__
fortheDistrictofColumbiaandforfederalemployeesthroughoutthestatesandterritories;andbylongcustom,daysthatreceivenationwideobservation,suchasChristmas,Thanksgiving,__4__
LaborDay,IndependentDay, andNewYear’sDay,areuniformlyset __5__
apartbyallstatesaslegal, orpublicholidays.In1968,federallegislationestablishedColumbiaDay __6__
asalegalholidayfortheDistrictofColumbiaandforthefederalgovernmentbeginningat1971.__7__
Thelawalsoprovidedbegunin1971federalemployeeswouldbegranted__8__
three-daysweekends byobservingWashington’sBirthdayonthethirdMondayinFebruary, __9__
MemorialDayonthelastMondayinMay,ColumbusDayonthesecondMondayinOctober,andVeteranDayontheforthMondayonOctober.By1971,mostofthestatesalsoadoptedthenewdates.__10__
英语专八改错突击练习(5)
OneofourmainargumentsisthatweinWesterncountriesactuallyhaveparttoplayincausingthe__1__
problemsoftheThirdWorld.ManyThirdWorldcountriesaresaddlewithimmensedebtburdens,for__2__
example.Theywerelentmoneywithlowinterestratesinthe1970s,whenmoneyfloodedintoWesternbanks__3__
fromtheoil-producingcountriesandwaslentouttotheThirdWorld.Theinterestrateshavethenbeenrisen__4__
dramatically.Soyouhaveasituationwhereacountryinmanycasescan’tevenrepaytheinterest,lettingalone__5__
thecapital,onthedebt.AndIsupposethebestexamplefromwhatIhavecomeacrossisacountryinWestAfricawheretheconsumption,thelocalconsumptionofpeanutswasbanned,becausepeanuts,iftheyareimportedcanbringinagreatdealofforeignincome.Thepeanutisamajorsourceof__6__
proteininthiscountry.Soyouhavepeoplegohungryasaresultofthat.__7_
ThepeanutswereexportedtoGreatBritainandtheUnitedStatestofeedourcattle.Thosecattlethenproducedasurplusofmilkwhichwedonotknowwhattodowith.Wehaveenoughmilk,moremilkthanwecancopewithintheWesternWorld.Andalsothatmilkwastransformedintodriedmilkpowderandthentakenbacktothiscountry__8__
tohelpfeedchildrenwhowere sufferingfrommalnutrition.Sothat’sthekindofinsanelyeconomicrelationship__9__
thatwehavegotourselvesintheThirdWorld.__10__
英语专八改错突击练习(6)
Exerciseisoneofthefewfactorswithapositiveroleinlong-termmaintenanceofbodyweight.Unfortunately,thatmessagehasnotgottenthroughtotheaverageAmerican,thatwouldrathertry switchingto__1__
"light"beerandlow-caloriebreadthanincreasephysicalexertion.TheCentersforDiseaseControl,forexample,foundthatfewerthanone-fourthofoverweightadultsweretryingtoshed__2__
poundssaidtheywerecombiningexercisewiththeirdiet.Inrejectingexercise,somepeoplemaybediscouragedtoomuchbycalorie-expendingcharts;__3__
forexample,onewouldhavetobrisklywalkthreemilesjusttoworkthe275caloriesinone__4__
deliciousDanishpastry.Evenexerciseprofessionalsconcedehalfapointhere."Exerciseinitselfisaverytoughwaytoloseweight,"saysYorkOnnen,__5__
theprogramdirectorofthePresident'sCouncilonPhysicalFitnessandSports.__6__Therefore,exercise'ssupportingroleinweightreductionisvital.__7__
AstudyattheBostonUniversityMedicalCenterofoverweightpoliceofficersandotherpublicemployeesconfirmedthatthosewhodietwithoutexerciseregainedalmostalltheiroldweight,__8__
whilethosewhoworkedexerciseintotheirdailyroutinemaintainedtheirnewweight.Ifyoudecidetostartwalkingonemileaday,theaddedexercisecouldburn
anextra100caloriesdaily.Inayear'stime,assumednoincreasein__9__
foodtaken,youcouldlosetenpounds.Byincreasingthedistanceofyourwalksgradually __10__
andmakingotherdietaryadjustments,youmayloseevenmoreweight.
英语专八改错突击练习(7)
HenryFielding,thefamousnovelistwhowasalso26)
aLondonmagistrate,oncemade anightraidtotwoknownhideoutsinthiscity-within-a-city;hefoundsevenmen, women,andchildrenpackedawayinafewtiny27)
stinkingrooms.Allofthesepeople, includedlittlechildrenoffiveandsixwhoweretrainedaspick-pockets,werewanted forcrime.Conditionslikethesebredmorecriminals.Oneofthe28)
typicalcaseswas thatJackShepard,whoseexecutionin1724waswatchedbytwohundredthousandpeople. Shepard,thesonofhonestworkingpeople,wasan29)apprenticeinarespectfultrade. Heranawayfromitbecausehefanciedthathehadbeenill-treated,andsoon30)
found itwaseasytomakemoremoneybythieving31)
ashisfatherhaddonebyalifetimeof honestwork.32)
InShepard’sdayhighwaymencommittedrobberiesatbroaddaylight,in sightofacrowd,androdesolemnlyand33)
triumphantlythroughthetownwithdangerof molestation.Iftheywerechased,twentyorthirtyarmedmenwereready34)
tocometo theirassistance.Murderwasaeverydayaffair,35)andthereweremanypeoplewhomade heroesfromthemurderers.
英语专八改错突击练习(8)
Ithinkitistruetosayingthat,ingeneral,languageteachers(26)
havepaid littleattentiontothewaysentencesareusedincombinationtoformstretchesof disconnecteddiscourse.Theyhavetendedtotake(27)
the
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