GRE最新练习题7.docx
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GRE最新练习题7.docx
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GRE最新练习题7
SECTION1
Time—30minutes
25Questions
1.TheEnvironmentalProtectionAgencymust
respondtothehazardtochildren'shealth
posedbyexposuretoasbestosfibersreleased
intheairinschoolclassrooms.Sinceitis
impossibletocloseschoolbuildings,thebestplan
wouldbetoinitiateprogramsthatmandatethe
immediateremovalofasbestosfromallthe
schoolbuildingsthatarefoundtocontain
asbestos,regardlessofwhetherornotthe
buildingsareinuse.
Whichofthefollowing,iftrue,isthestrongest
reasonfortheEnvironmentalProtectionAgency
nottofollowtheplanoutlinedabove?
(A)Thetechniquesavailableforremoving
asbestosoftenincreasethelevelofairborne
asbestos.
(B)Schoolsareplaceswhereasbestosis
especiallylikelytobereleasedintotheairby
theactionoftheoccupants.
(C)Childrenexposedtoairborneasbestosruna
greaterriskofdevelopingcancerthando
adultsexposedtoairborneasbestos.
(D)Thecostofremovingasbestosvariesfrom
schooltoschool,dependingonaccessibility
andthequantityofasbestostoberemoved.
(E)Itisimpossibletodeterminewithanydegree
ofcertaintyifandwhenconstructionmaterials
thatcontainasbestoswillbreakdownand
releaseasbestosfibersintotheair.
2.Aedesalbopictus,avarietyofmosquitothathas
recentlyestablisheditselfinthesoutheastern
UnitedStates,islesswidespreadthanthe
indigenousswampmosquito.Boththeswamp
mosquitoandA.albopictuscancarryvirusesthat
aresometimesfataltohumans,butA.albopictus
isagreaterdangertopublichealth.
Eachofthefollowing,iftrue,providesadditional
informationthatstrengthensthejudgmentgiven
aboutthedangertopublichealthEXCEPT:
(A)Unliketheswampmosquito,A.albopictus
originatedinAsia,andlarvaeofitwerenot
observedintheUnitedStatesbeforethemid-
1980's.
(B)Unliketheswampmosquito,A.albopictus
tendstospendmostofitsadultlifenear
humanhabitation.
(C)Unlikeswampmosquitolarvae,A.
albopictuslarvaesurviveinflowerpots,tin
cans,andmanysmallhouseholdobjectsthat
holdalittlewater.
(D)Incomparisonwiththeswampmosquito,A.
albopictushostsamuchwidervarietyof
virusesknowntocauseseriousdiseasesin
humans.
(E)A.albopictusseeksoutamuchwiderrange
ofanimalhoststhandoestheswampmosq-
uito,anditismorelikelytobitehumans.
Questions3-8
Themanagerofahorseshowisplacingseven
obstacles-onechickencoop,onegate,twostone
walls,andthreefences-onajumpingcoursethat
consistsofsevenpositions,numberedandarranged
consecutivelyfrom1to7.Theplacementofthe
obstaclesinthesevenpositionsmustconformtothe
followingconditions:
Notwofencescanbeplacedinconsecutivepositions.
Thestonewallsmustbeplacedinconsecutive
positions.
3.Whichofthefollowingisanacceptable
placementofobstaclesinthesevenpositions,
inorderfromthefirstpositiontothelastposition
onthecourse?
(A)Chickencoop,fence,gate,stonewall,fence,
stonewall,fence
(B)Fence,gate,fence,fence,chickencoop,
stonewall,stonewall
(C)Fence,stonewall,stonewall,gate,chicken
coop,fence,fence
(D)Gate,stonewall,stonewall,fence,fence,
chickencoop,fence
(E)Stonewall,stonewall,fence,chickencoop,
fence,gate,fence
4.Ifoneofthefencesisinthethirdpositionand
anotherisinthesixthposition,whichofthe
followingmustbetrue?
(A)Thechickencoopisintheseventhposition.
(B)Thegateisinthesecondposition.
(C)Thegateisintheseventhposition.
(D)Oneofthestonewallsisinthefirstposition.
(E)Oneofthestonewallsisinthefourth
position.
5.Ifoneofthestonewallsisintheseventhposition,
whichofthefollowingmustbeFALSE?
(A)Thechickencoopisinthesecondposition.
(B)Thechickencoopisinthefourthposition.
(C)Oneofthefencesisinthefirstposition.
(D)Oneofthefencesisinthesecondposition.
(E)Thegateisinthefourthposition.
6.WhichofthefollowingCANNOTbethe
positionsoccupiedbythethreefences?
(A)First,third,andfifth
(B)First,third,andsixth
(C)Second,fourth,andsixth
(D)Second,fourth,andseventh
(E)Third,fifth,andseventh
7.Ifastonewallisplacedimmediatelyafterthe
gate,whichofthefollowingisacompleteand
accuratelistofthepositionsinwhichthegatecan
beplaced?
(A)Second,third(B)Second,fourth
(C)Third,fourth(D)Second,third,fourth
(E)Third,fourth,fifth
8.Ifthechickencoopisnotplacedimmediately
afteranyfence,whichofthefollowingisa
completeandaccuratelistofthepositionsin
whichthechickencoopcanbeplaced?
(A)First,second,third
(B)First,third,fourth
(C)First,fourth,sixth
(D)First,second,third,fourth
(E)First,third,fourth,sixth
9.Aperson'scholesterollevelwilldecline
significantlyifthatpersonincreasesthe
numberofmealseatenperday,butonlyif
thereisnosignificantincreaseintheamount
offoodeaten.However,mostpeoplewho
increasethenumberofmealstheyeateachday
willeatalotmorefoodaswell.
Ifthestatementsabovearetrue,whichofthe
followingismoststronglysupportedbythem?
(A)Formostpeople,cholesterollevelisnot
significantlyaffectedbytheamountoffood
eatenperday.
(B)Formostpeople,theamountoffoodeatenper
mealismoststronglyaffectedbythetimeof
dayatwhichthemealiseaten.
(C)Formostpeople,increasingthenumberof
mealseatenperdaywillnotresultina
significantlylowercholesterollevel.
(D)Formostpeople,thetotalamountoffood
eatenperdayisunaffectedbythenumberof
mealseatenperday.
(E)Formostpeople,increasingthenumberof
mealseatenperdaywillresultinasignificant
changeinthetypesoffoodeaten.
10.AcertaintypeofdinnerwaremadeinGanandia
containslead.Leadcanleachintoacidicfoods,
andGanandianstendtoeathighlyacidicfoods.
However,theextremerarityofleadpoisoningin
Ganandiaindicatesthatthedinnerwaredoesnot
containdangerousamountsoflead.
Whichofthefollowing,iftrue,mostseriously
weakenstheargumentabove?
(A)Thedinnerwareisproducedexclusivelyfor
saleoutsideGanandia.
(B)Ganandianfoodstypicallyaremuchmore
acidicthanfoodsanywhereelseinthe
world.
(C)Theonlysourceofleadpoisoningin
Ganandiaisleadthathasleachedintofood.
(D)Mostpeoplewhousethedinnerwarearenot
awarethatitcontainslead.
(E)Acidicfoodscanleachleadfromdinnerware
evenifthatdinnerwarehasaprotective
coating.
Question11isbasedonthefollowinggraph.
EFFECTIVENESSOFDRUGXINERADICATING
ABACTERIALLUNGINFECTIONINADULT
PATIENTS
PointDuringtheCourseoftheInfection
atWhichDrugXWasFirstAdministeredtoPatients
(inweeksfollowingtheonsetofsymptoms)
11.DrugX,whichkillsoncontactthebacteriathat
causetheinfection,isadministeredtopatients
bymeansofanaerosolinhaler.
Whichofthefollowing,iftrue,contributesmost
toexplainingthechangeindrugX's
effectivenessduringthecourseoftheinfection?
(A)Symptomsoftheinfectionusuallybecome
evidentduringthefirst48hoursfollowing
infection.
(B)Mostpatientswithlunginfectionssaythey
preferaerosolinhalerstoothermeansof
administeringantibacterialdrugs.
(C)InmostpatientstakingdrugX,thedosage
administeredisincreasedslightlyeachweek
untilsymptomsdisappear.
(D)Inpatientswhohavetheinfection,the
abilitytoinhalebecomesincreasingly
impairedbeginninginthesecondweekafter
theonsetofsymptoms.
(E)DrugXisnotadministeredtoanypatient
whoshowssignsofsufferingfrom
secondaryinfections.
12.Sergeant
Ourpoliceacademynolongerrequiresits
applicantstopassaphysicalexamination
beforebeingadmittedtotheacademy.Asa
result,severalcandidateswithweakheartsand
highbloodpressurehavebeenadmitted.Hence,
wecanexpectourfuturepoliceforcetohave
morehealthproblemsthanourcurrentpolice
force.
Knowledgeofeachofthefollowingwouldbe
relevanttodeterminingthereliabilityofthe
sergeant'spredictionEXCEPTwhether
(A)policeofficercandidatesarescreenedfor
highbloodpressurebeforejoiningthepolice
force
(B)thepoliceofficercandidateswhoarenot
healthynowarelikelytobeunhealthyas
policeofficers
(C)graduatesofthepoliceacademyarerequired
topassaphysicalexamination
(D)thehealthofthecurrentpoliceofficer
candidatesisworsethanwasthehealthof
policeofficercandidatesinthepast
(E)apoliceofficer'shealthisareliableindicator
oftheofficer'sperformance
Questions13-16
Atranscontinentalrailroadtrainhasexactlyeightcars—J,K,L,M,N,O,P,andR—boundforseveraldifferentdestinations.Thepositionsofthecarsinanyorderingofthetrainarenumberedfirstthrougheighthfromthefrontofthetrain.Becausethecarswillbedetachedatdifferentpoints,certainorderingrequirementsmustbemet,asfollows:
JmustbesomewherebehindMinthetrain.
Kmustbeimmediatelyinfrontofor
immediatelybehindP.
OmustbeinfrontofN,andexactlyonecar
mustbebetweenthem.
Rmustbeamongthefrontmostfourcarsand
somewherebehindO.
13.Whichofthefollowingrepresentsapossible
orderforthecars,fromthefronttotherearof
thetrain
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