GRE试题七.docx

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