已知(a,c)=1,(b,c)=1,则下列结论不一定正确的是()。
B
暂无解析
TEXTB
Whatweknowofprenataldevelopmentmakesallthisattemptmadebyamothertomoldthecharacterofherunbornchildbystudyingpoetry,art,ormathematicsduringpregnancyseemutterlyimpossible.Howcould
suchextremelycomplexinfluencespassfromthemothertothechild?Thereisnoconnectionbetweentheirnervoussystems.Eventhebloodvesselsofmotherandchilddonotjoindirectly.Anemotionalshocktothemotherwillaffectherchild,becauseitchangestheactivityofherglandsandsothechemistryherblood.Anychemicalchangeinthemother'sbloodwillaffectthechildforbetterorworse.Butwecannotseehowalooking
formathematicsorpoeticgeniuscanbedissolvedinbloodandproduceasimilarlikingorgeniusinthechild.
Inourdiscussionofinstinctswesawthattherewasreasontobelievethatwhateverweinheritmustbeof
someverysimplesortratherthananycomplicatedorverydefinitekindofbehavior.Itiscertainthatnoone
inheritsaknowledgeofmathematics.Itmaybe,however,thatchildreninheritmoreorlessofarathergeneral
abilitythatwemaycallintelligence.Ifveryintelligentchildrenbecomedeeplyinterestedinmathematics,they
willprobablymakeasuccessofthatstudy.
Asformusicalability,itmaybethatwhatisinheritedisanespeciallysensitiveear,apeculiarstructureofthe
handsorthevocalorgansconnectionsbetweennervesandmusclesthatmakeitcomparativelyeasytolearnthe
movementsamusicianmustexecute,andparticularlyvigorousemotions.Ifthesefactorsareallorganized
aroundmusic,thechildmaybecomeamusician.Thesamefactors,inothercircumstancemightbeorganized
aboutsomeothercenterofinterest.Therichemotionalequipmentmightfindexpressioninpoetry.Thecapable
fingersmightdevelopskillinsurgery.Itisnottheknowledgeofmusicthatisinherited,thennoreventheloveof
it,butacertainbodilystructurethatmakesitcomparativelyeasytoacquiremusicalknowledgeandskill.
Whetherthatabilityshallbedirectedtowardmusicorsomeotherundertakingmaybedecidedentirelybyforces
intheenvironmentinwhichachildgrowsup.
6.Whichofthefollowingstatementsisnottrue?
A.Somemotherstrytoinfluencetheirunbornchildrenbystudyingartandothersubjectsduringtheir
pregnancy.
B.Itisutterlyimpossibleforustolearnanythingaboutprenataldevelopment.
C.Thebloodvesselsofmotherandchilddonotjoindirectly.
D.Therearenoconnectionbetweenmother'snervoussystemsandherunbornchild's.
7.Amotherwillaffectherunbornbabyontheconditionthat____.
A.sheisemotionallyshocked
B.shehasagoodknowledgeofinheritance
C.shetakespartinallkindofactivities
D.shestickstostudying
8.Accordingtothepassage,achildmayinherit____.
A.everythingfromhismotherB.aknowledgeofmathematics
C.arathergeneralabilitythatwecallintelligence
D.hermother'smusicalability
9.Ifachildinheritssomethingfromhismother,suchasanespeciallysensitiveear,apeculiarstructureofthe
handsorofthevocalorgans,hewill____.
A.surelybecomemusician
B.mostlybecomeapoet
C.possiblybecomeateacher
D.becomeamusicianontheconditionthatallthesefactorsareorganizedaroundmusic
10.Whichofthefollowingisthebesttitleforthepassage?
A.RoleofInheritance.
B.AnUnbornChild.
C.Functionofinstincts.
D.InheritedTalents.
Onceitwaspossibletodefinemaleandfemaleroleseasilybythedivisionoflabor.Menworkedoutsidethehomeandearnedtheincometosupporttheirfamilies,whilewomencookedthemealsandtookcareofthehomeandthechildren.Theseroleswerefirmlyfixedformostpeople,andtherewasnotmuchopportunityforwomentoexchangetheirroles.Butbythemiddleofthiscentury,men’sandwomen’sroleswerebecominglessfirmlyfixed.
Inthe1950s,economicandsocialsuccesswasthegoalofthetypicalAmerican.Butinthe1960sanewforcedevelopedcalledthecounterculture.Thepeopleinvolvedinthismovementdidnotvaluethemiddle-classAmericangoals.Thecounterculturepresentedmenandwomenwithnewrolechoices.Takingmoreinterestinchildcare,menbegantosharechild-raisingtaskswiththeirwives.Infact,someyoungmenandwomenmovedtocommunalhomesorfarmswheretheeconomicandchildcareresponsibilitiesweresharedequallybybothsexes.Inaddition,manyAmericansdidnotvaluethetraditionalmaleroleofsoldier.SomeyoungmenrefusedtobedraftedassoldierstofightinthewarinVietnam.
Intermsofnumbers,thecounterculturewasnotaverylargegroupofpeople.ButitsinfluencespreadtomanypartsofAmericansociety.Workingmenofallclassesbegantochangetheireconomicandsocialpatterns.Industrialworkersandbusinessexecutivesalikecutdownon“overtime”worksothattheycouldspendmoreleisuretimewiththeirfamilies.Somedoctors,lawyers,andteachersturnedawayfromhighpayingsituationstopracticetheirprofessionsinpoorerneighborhoods.
Inthe1970s,thefeministmovement,orwomen’sliberation,producedadditionaleconomicandsocialchanges.Womenofallagesandatalllevelsofsocietywereenteringtheworkforceingreaternumbers.Mostofthemstilltooktraditionalwomen’sjobsaspublicschoolteaching,nursing,andsecretarialwork.Butsomewomenbegantoentertraditionallymaleoccupations:policework,banking,dentistry,andconstructionwork.Womenwereaskingforequalwork,andequalopportunitiesforpromotion.
Todaytheexpertsgenerallyagreethatimportantchangesaretakingplaceintherolesofmenandwomen.Naturally,therearedifficultiesinadjustingtothesetransformations.
1.WhichofthefollowingbestexpressthemainideaofParagraph1?
A.Womenusuallyworkedoutsidethehomeforwages.
B.Menandwomen’sroleswereeasilyexchangedinthepast.
C.Men’srolesathomeweremorefirmlyfixedthanwomen’s.
D.Menandwomen’sroleswereusuallyquiteseparatedinthepast.
2.WhichsentencebestexpressesthemainideaofParagraph2?
A.Thefirstsentence.
B.Thesecondandthethirdsentences.
C.Thefourthsentence.
D.Thelastsentence.
3.Inthepassagetheauthorproposesthatthecounterculture___.
A.destroyedtheUnitedStates.
B.transformedsomeAmericanvalues.
C.wasnotimportantintheUnitedStates.
D.broughtpeoplemoreleisuretimewiththeirfamilies.
4.Itcouldbeinferredfromthepassagethat___.
A.menandwomenwillneversharethesamegoals.
B.somemenwillbewillingtoexchangetheirtraditionalmaleroles.
C.mostmenwillbehappytosharesomeofthehouseholdresponsibilitieswiththeirwives.
D.moreAmericanhouseholdsareheadedbywomenthaneverbefore.
5.Thebesttitleforthepassagemaybe___.
A.ResultsofFeministMovements
B.NewinfluenceinAmericanLife
C.CountercultureandItsconsequence
D.TraditionalDivisionofMaleandFemaleRoles.
Itwasrecommendedthatpassengers_____smokeduringtheflight.
TEXTC
Therearetwofactorswhichdetermineanindividual'sintelligence.Thefirstisthesortofbrainheisbornwith.
Humanbrainsdifferconsiderably,somebeingmorecapablethanothers.Butnomatterhowgoodabrainhehas
tobeginwith,anindividualwillhavealoworderofintelligenceunlesshehasopportunitiestolearn.Sothe
secondfactoriswhathappenstotheindividual—thesortofenvironmentinwhichheisbroughtup.Ifan
individualishandicapped(不利)environmentally,itislikelythathisbrainwillfailtodevelopandhewillnever
attainthelevelofintelligenceofwhichheiscapable.Theimportanceofenvironmentindetermininganindividual'sintelligencecanbedemonstratedbythecasehistoryoftheidenticaltwins,PeterandMark.Beingidentical,thetwinshadidenticalbrainsatbirth,andtheirgrowthprocesseswerethesame.Whenthetwinswerethreemonthsold,theirparentsdied,andtheywere
placedinseparatefoster(抚养)homes.Peterwasraisedbyparentsoflowintelligenceinanisolatedcommunity
withpooreducationalopportunities.Markwasrearedinthehomeofwell-to-doparentswhohadbeentocollege.Hewasreadtoasachild,senttogoodschools,andgiveneveryopportunitytobestimulated
intellectually.Thisenvironmentaldifferencecontinueduntilthetwinswereintheirlateteens,whentheywere
giventeststomeasuretheirintelligence.Mark'sI.Q.was125,twenty-fivepointshigherthantheaverageand
fullyfortypointshigherthanhisidenticalbrother.Givenequalopportunities,thetwins,havingidenticalbrains,
wouldhavetestedatroughlythesamelevel.
11.Thisselectioncanbestbetitled____________.
A.MeasuringYourIntelligence
B.IntelligenceandEnvironment
C.TheCaseofPeterandMark
D.HowtheBrainInfluencesIntelligence
12.Thebeststatementofthemainideaofthispassageisthat_______.
A.humanbrainsdifferconsiderably
B.thebrainapersonisbornwithisimportantindetermininghisintelligence
C.environmentiscrucialindeterminingaperson'sintelligence
D.personshavingidenticalbrainswillhaveroughlythesameintelligence
13.Accordingtothepassage,theaverageI.Q.is_______.
A.85.B.100C.110D.125
14.Thecasehistoryofthetwinsappearstosupporttheconclusionthat_______.
A.individualswithidenticalbrainsseldomtestatthesamelevelB.anindividual'sintelligenceisdeterminedonlybyhisenvironment
C.lackofopportunityblocksthegrowthofintelligence
D.changesofenvironmentproducechangesinthestructureofthebrain
15.Thispassagesuggeststhatanindividual'sI.Q._______.
A.canbepredictedatbirth
B.staysthesamethroughouthislife
C.canbeincreasedbyeducation
D.isdeterminedbyhischildhood