GRE试题七.docx
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GRE试题七.docx
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GRE试题七
GRE试题(七)
Questions1-8..joxue.
Abakerymakesninekindsofcookies.Ofthesenine,..joxue.
threekindsarefruitcookies—G,H,andJ;threekinds..joxue.
arenutcookies—K,L,andO;andthreekindsareplain..joxue.
cookies—X,Y,andZ.Eachdayoftheweek,Monday..joxue.
throughSunday,thebakerywillfeatureaspecialprice..joxue.
onexactlythreedifferentkindsofcookies.Thethree..joxue.
featuredcookieswillbeselectedaccordingtothe..joxue.
followingrules:
..joxue.
Eachdayatleastonefruitcookiemustbefeatured,..joxue.
andeachdayatleastonenutcookiemustbe..joxue.
featured...joxue.
OnanydayonwhichcookieJisfeatured,cookieL..joxue.
cannotbefeatured...joxue.
Onanydayonwhichcookiekisfeatured,cookieY..joxue.
mustalsobefeatured...joxue.
Nokindofcookiecanbefeaturedmorethanthree..joxue.
timesinaweek...joxue.
1.Whichofthefollowingliststhreecookiesthatcanbe..joxue.
featuredtogether?
..joxue.
(A)G,L,Z..joxue.
(B)H,K,X..joxue.
(C)J,L,Y..joxue.
(D)J,O,Z..joxue.
(E)K,O,Y..joxue.
2.OnadayonwhichbothcookieLandcookieZare..joxue.
featured,whichofthefollowingcanbethethirdkind..joxue.
ofcookiefeatured?
..joxue.
(A)H..joxue.
(B)J..joxue.
(C)O..joxue.
(D)X..joxue.
(E)Y..joxue.
3.Apartialscheduleoffeaturedcookiesisshownbelow...joxue.
MondayTuesdayWednesdayThursdayFriday..joxue.
LHOGZ..joxue.
Accordingtothisschedule,whichofthefollowingisadayon..joxue.
whichcookieXCANNOTbeoneofthefeaturedcookies?
..joxue.
(A)Monday..joxue.
(B)Tuesday..joxue.
(C)Wednesday..joxue.
(D)Thursday..joxue.
(E)Friday..joxue.
4.IfcookieJisfeaturedonFriday,Saturday,and..joxue.
Sunday;ifcookieKisfeaturedonMonday,Tuesday,..joxue.
andWednesday,andifcookieGisfeaturedonlyon..joxue.
Thursday,thencookieLcanbefeaturedon..joxue.
(A)Mondayonly..joxue.
(B)Thursdayonly..joxue.
(C)Monday,Tuesday,andWednesdayonly..joxue.
(D)Friday,Saturday,andSundayonly..joxue.
(E)anytwoofthefirstfourdaysoftheweek..joxue.
5.Ifeachkindofnutcookieisfeaturedthreetimesin..joxue.
oneweek,whatisthemaximumnumberordayson..joxue.
whichplaincookiescanbefeaturedduringthatweek?
..joxue.
(A)Three..joxue.
(B)Four..joxue.
(C)Five..joxue.
(D)Six..joxue.
(E)Seven..joxue.
6.IfcookieHandcookieYareeachfeaturedon..joxue.
Monday,Tuesday,andWednesday,andifcookieG..joxue.
andcookieXareeachfeaturedonThursday,Friday..joxue.
andSaturday,thenthecookiesfeaturedonSunday..joxue.
mustincludeboth..joxue.
(A)JandK..joxue.
(B)JandL..joxue.
(C)JandO..joxue.
(D)KandL..joxue.
(E)KandZ..joxue.
7.Ifexactlysevenkindsofcookiesarefeaturedduring..joxue.
oneweek,whichofthefollowingmustbetrueabout..joxue.
thatweek?
..joxue.
(A)Xistheonlykindofplaincookiethatisfeatured..joxue.
(B)Yistheonlykindofplaincookiethatisfeatured..joxue.
(C)Zistheonlykindofplaincookiethatisfeatured...joxue.
(D)Onatleastoneday,bothcookieGandcookieZ..joxue.
arefeatured...joxue.
(E)Onatleastoneday,bothcookieJandcookieX..joxue.
arefeatured...joxue.
8.IfcookieXisfeaturedexactlytwiceandcookieZis..joxue.
featuredexactlythreetimesinoneweek,whichof..joxue.
thefollowingmustbetrue?
..joxue.
(A)CookieGisfeaturedexactlythreetimesduring..joxue.
theweek...joxue.
(B)CookieJisfeaturedatmosttwiceduringthe..joxue.
week...joxue.
(C)CookieKisfeaturedatmosttwiceduringthe..joxue.
week...joxue.
(D)CookieLisfeaturedatmosttwiceduringthe..joxue.
week...joxue.
(E)CookieYisfeaturedexactlytwiceduringthe..joxue.
week...joxue.
9.Inrecentyears,therehasbeenadramaticdeclinein..joxue.
thepopulationoftheshrike,apredatorybirdthat..joxue.
inhabitsflatland,suchasfarmsandpastures.Some..joxue.
ornithologistshypothesizethatthisdeclineisdueto..joxue.
theintroductionofnew,moreeffectivepesticidesto..joxue.
controltheinsectspeciesonwhichshrikesprey...joxue.
Theanswertowhichofthefollowingquestionsis..joxue.
NOTrelevanttoevaluatingtheornithologists’..joxue.
hypothesis?
..joxue.
(A)Wasthereadeclineintheshrikepopulation..joxue.
beforethenewpesticideswerefirstused?
..joxue.
(B)Haveshrikepopulationsdeclinedsignificantly..joxue.
inthosehabitatswherethenewpesticideshave..joxue.
notbeenused?
..joxue.
(C)Havethenewpesticidesmoresignificantly..joxue.
reducedthepopulationofinsectspecieson..joxue.
whichshrikespreythandidthepesticidespreviously..joxue.
used?
..joxue.
(D)Areinsectsthathaveconsumedthenewpesti-..joxue.
cidesmoretoxictotheshrikesthateatthose..joxue.
insectsthanwereinsectsthatconsumedthe..joxue.
lesseffectivepesticides?
..joxue.
(E)Arethenewpesticidesconsideredbymost..joxue.
peopletobelessharmfultotheenvironment..joxue.
thantheoldpesticideswereconsideredtobe?
..joxue.
10.CensusdataforPrenlandshowthatunmarried..joxue.
Prenlandicmenintheirthirtiesoutnumberunmarried..joxue.
Prenlandicwomeninthatagegroupbyabouttento..joxue.
One.Mostofthesemendowishtomarry.Clearly,..joxue.
however,unlessmanyofthemmarrywomenwho..joxue.
arenotPrenlandic,allbutaminoritywillremain..joxue.
unmarried...joxue.
Theargumentmakeswhichofthefollowingassump-..joxue.
tions?
..joxue.
(A)EmigrationfromPrelandismorecommon..joxue.
amongwomenthanamongmen...joxue.
(B)AgreaterproportionofPrelandicwomen..joxue.
intheirthirtiesthanofPrenlandicmenofthe..joxue.
sameagewouldprefertoremainunmarried...joxue.
(C)Itisunlikelythatmanyoftheseunmarried..joxue.
Prenlandicmenwillmarrywomenmorethan..joxue.
afewyearsolderthanthemselves...joxue.
(D)Prenlandhasahighrateofdivorce...joxue.
(E)MostoftheunmarriedPrenlandicmenare..joxue.
unwillingtomarrywomenwhoarenot..joxue.
Prenlandic...joxue.
11.Certainextremelyharmfulbacteriafoundonlyin..joxue.
sewagearedifficulttodetectdirectly.Testingfor..joxue.
E.coli,aneasilydetectedandlessharmfultypeof..joxue.
bacteria,inoceanwaterwouldbeareliablewayof..joxue.
determiningwhetherornotthesemoreharmfulbac-..joxue.
teriaarepresent,sinceoceanwatercontainsE.Coli..joxue.
onlyifthewateriscontaminatedwithsewagethat..joxue.
containstheharmfulbacteria...joxue.
Whichofthefollowing,iftrue,mostseriously..joxue.
weakenstheargument?
..joxue.
(A)TherearemanydifferentstrainsoftheE.coli..joxue.
bacteria,andonlysomeofthesestrainsare..joxue.
harmful...joxue.
(B)Sometypesofbacteriafoundinsewageare..joxue.
neitherdisease-causingnordifficulttodetect..joxue.
directly...joxue.
(C)Someofthetypesofbacteriafoundinsewage..joxue.
alongwithE.coliarenotharmfultopeople..joxue.
unlessthebacteriaareingestedinlargequantities...joxue.
(D)E.colidiesoutmuchmorequicklythansomeof..joxue.
themoreharmfulbacteriafoundinsewageand..joxue.
thencannolongerbeeasilydetected...joxue.
(E)Someofthetypesofbacteriafoundinsewage..joxue.
alongwithE.colireproduceataslowerrate..joxue.
thanE.coli...joxue.
Questions12-17..joxue.
Abankhasexactlyfourcashierwindows,arrangedina..joxue.
rowandnumberedconsecutively1through4fromone..joxue.
endoftherowtotheother.Thebankhasexactlysix..joxue.
cashiers:
twosupervisors(JoanandKarim);andfour..joxue.
trainees(Lorraine,Mark,Nora,andpatrick).Throughout..joxue.
aparticularpeak-hourperiod,thestationingofcashiersat..joxue.
windowsisrestrictedasfollows:
..joxue.
Theremustbeexactlyonecashierateachwindow...joxue.
Thecashieratwindow2mustbeasupervisor...joxue.
Lorrainemustbeatawindowbutcannotbeatwindow3...joxue.
IfMarkisatoneofthewindows,Joanmustbeata..joxue.
windowimmediatelyadjacenttoit...joxue.
ThecashiersatthewindowsmustincludeeitherNora..joxue.
orPatrick,buttheycannotincludebothNoraand..joxue.
Patrick...joxue.
12.Whichofthefollowingliststhecashierswhocanbe..joxue.
stationedatwindows1through4duringthisperiod?
..joxue.
1234..joxue.
(A)JoanKarimMarkLorraine..joxue.
(B)JoanKarimNoraLorraine..joxue.
(C)KarimNoraJoanLorraine..joxue.
(D)MarkJoanLorrainePatrick..joxue.
(E)PatrickJoanNoraLorraine..joxue.
13.Whichofthefollowingmustbetrueaboutthe..joxue.
stationingofthecashiersduringthisperiod?
..joxue.
(A)Joanisatwindow1oratwindow2...joxue.
(B)Karimisatwindow2oratwindow4...joxue.
(C)Lorraineisatwindow1orwindow4...joxue.
(D)Noraisatwindow1oratwindow3...joxue.
(E)Patrickisatwindow3oratwindow4...joxue.
sarilyinthatorder,arestationedatimmediately..joxue.
adjacentwindows,whichofthefollowingmustbe..joxue.
stationedatwindow4duringthisperiod?
..joxue.
(A)Joan..joxue.
(B)Karim..joxue.
(C)Lorraine..joxue.
(D)Mark..joxue.
(E)Patrick..joxue.
15.IfduringthisperiodLorraineandMark,notneces-..joxue.
sarilyinthatorder,arestationedatimmediately..joxue.
adjacentwindows,whichofthefollowingcanbe..joxue.
stationedatwindow1duringthisperiod?
..joxue.
(A)Joan..joxue.
(B)Karim..joxue.
(C)Lorraine..joxue.
(D)Mark..joxue.
(E)Nora..joxue.
16.IfduringthisperiodLorrainedandNora,notneces-..joxue.
sarilyinthatorder,arestationedatimmediately..joxue.
adjacentwindows,whichofthefollowingmustbe..joxue.
tru
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