大学体验英语第三册作业题及参考 答案Word文档下载推荐.docx

大学体验英语第三册作业题及参考 答案Word文档下载推荐.docx

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2.Whichofthefollowingsentencescanbestsummarizethemainideaof

thepassage?

A）HardtimeshadcometoSouthCarolinaplanters.

B）Plantersfoundtheirexpensesrisingandtheirincomesfromthe

saleofcottonreduced.

C）YearafteryearthesoilofSouthCarolinahadbeenplantedwith

thesamecrop.

D）Becausethesoilwasbeginningtowearout,cropsweresmaller.

3.IndiscussingtheeconomyofSouthCarolina,oneoftheauthor'

s

assumptionsisthatthereaderunderstands______.

A）thelackofknowledgeonthepartofplantersandslaves

B）farmingmethodsinuseatthetime

C）thelawofsupplyanddemand

D）whymoreslaveswereneeded

4.PlantationsgrewinsizeinSouthCarolinamainlybecause______.

A）demandforcottonhaddecreasedB）plantersgrewrich

C）placeshadtobefoundforyoungpeople

D）soilwaslessproductive

5.Thefactthatcottonpriceswerefallingismentionedbytheauthorto

showthat______.

A）cottonshipmentsshouldhavebeenregulated

B）poorersoilproducedpoorerqualitycrops

C）theplanterswerehavinghardtimes

D）therewerereasonswhyyoungpeoplemovedwestward

Questions6to10arebasedonthefollowingpassage:

AuniquelaboratoryattheUniversityofChicagoisbusyonlyatnight.Itisadreamlaboratorywhereresearchersareatworkstudyingdreamers.Theirfindingshaverevealedthateveryonedreamsfromthreetoseventimesanight,althoughinordinarylifeapersonmayremembernoneoronlyoneofhisdreams.

Whilethesubjects--usuallystudents--areasleep,specialmachinesrecordtheirbrainwavesandeyemovementsaswellasthebodymovementsthatsignaltheendofadream.Surprisingly,allsubjectssleepsoundly.

Observersreportthatapersonusuallymoveshisbodyrestlesslybeforeadream.Oncethedreamhasstarted,hisbodyrelaxesandhiseyesbecomemoreactive,asifthecurtainhadgoneuponashow.Assoonasthemachineindicatesthatthedreamisover,abuzzerwakensthesleeper.Hesitsup,recordshisdream,andgoesbacktosleep--perhapstodreamsomemore.

Researchershavefoundthatifthedreameriswakenedimmediatelyafterhisdream,hecanusuallyrecalltheentiredream.Ifheisallowedtosleepevenfivemoreminutes,hismemoryofthedreamwillhavefaded.

6.Accordingtothepassage,researchersattheUniversityofChicagoare

studying______.

A）thecontentofdreamsB）themeaningofdreams

C）theprocessofsleepingD）dreamerswhiletheydream

7.Theirfindingshaverevealedthat______.

A）everyonedreamseverynightB）dreamsareeasilyremembered

C）dreamsarelikelytobefrightening

D）personsdreamonlyonedreamanight

8.Justbeforeadreamasleeperwillusually______.

A）relaxB）lieperfectly

C）giveanuneasymovementD）makemoreeyemovements

9.Inthedreamlaboratory,thedreamersarerecorded_______.

A）assoonasthestudentswakeinthemorning

B）atstatedintervalsduringthenight

C）aboutfiveminutesaftertheendofeachdream

D）immediatelyaftereachdream

10.Apersonismostlikelytorememberthedreamthat_______.

A）isofmostinteresttohim

B）occursimmediatelyafterhegoestosleep

C）occursjustbeforehewakesup

D）bothA）andB）

Questions11to15arebasedonthefollowingpassage:

Theexistenceofoilwellshasbeenwellknownforalongtime.SomeoftheIndiansofNorthAmericausedtocollectandselltheoilfromthewellsofPennsylvania.Noone,however,seemstohaverealizedtheimportanceofthisoiluntilitwasfoundthatparaffin-oilcouldbemadefromit;

thisledtothedevelopmentofthewellsandtothemakingofenormousprofits.Whentheinternalcombustionenginewasinvented,oilbecameofworld-wideimportance.

Whatwastheoriginoftheoilwhichnowdrivesourmotor-carsandaircraft?

Scientistsareconfidentabouttheformationofcoal,buttheydonotseemsosurewhenaskedaboutoil.Theythinkthattheoilunderthesurfaceoftheearthoriginatedinthedistantpast,andwasformedfromlivingthingsinthesea.Countlessbillionsofminuteseacreaturesandplantslivedandsanktotheseabed.Theywerecoveredwithhugedepositsofmud,andbyprocessesofchemistry,pressureandtemperaturewerechangedthroughlongagesintowhatweknowasoil.Forthesecreaturestobecomeoil,itwasnecessarythattheyshouldbeimprisonedbetweenlayersofrockforanenormouslengthoftime.Thestatementthatoiloriginatedintheseaisconfirmedbyaglanceatamapshowingthechiefoilfieldsoftheworld;

veryfewofthemarefardistantfromtheoceansoftoday.Insomeplacesgasandoilcomeuptothesurfaceoftheseafromitsbed.Therocksinwhichoilisfoundareofmarineorigintoo.Theyaresedimentaryrocks,rockswhichwerelaiddownbytheactionofwateronthebedoftheocean.Almostalwaystheirremainsofshells,andotherproofsofsealife,arefoundclosetotheoil.Averycommonsedimentaryrockiscalledshale,whichisasoftrockandwasobviouslyformedbybeingdepositedontheseabed.Andwherethereisshalethereislikelytobeoil.

Therearefourmainareasoftheworldwheredepositsofoilappear.ThefirstisthatoftheMiddleEast,andincludestheregionsneartheCaspianSea,theBlackSea,theRedSeaandthePersianGulf.AnotheristheareabetweenNorthandSouthAmerica,andthethird,betweenAsiaandAustralia,includestheIslandsofSumatra,BorneoandJava.

ThefourthareaisthepartneartheNorthPole.Whenallthepresentoil-fieldsareexhausted,itispossiblethatthiscoldregionmaybecomethesceneofoilactivity.Yetthedifficultieswillbegreat,andthecostsmaybesohighthatnocompanywillundertakethework.Ifprogressinusingatomicpowertodrivemachinesisfastenough,itispossiblethatoil-drivenenginesmaygiveplacetothenewkindofengine.Inthatcasethedemandforoilwillfall,theoilfieldswillgraduallydisappear,andthedepositsattheNorthPolemayrestwheretheyareforever.

11.Mineraloildidn'

tbecomeveryimportantuntil_______.

A）theinternalcombustionenginewasinvented

B）theoilwellsinPennsylvaniaweredeveloped

C）AmericanIndiansbegantocollectandsellit

D）oilfieldswereexhausted

12.Scientiststhinkthat_______.

A）coalwasformedfromshaleunderthesurfaceoftheearth

B）oilwasformedfromseacreaturescaughtbetweenlayersofrock

C）oilwasformedfromlargedepositsofmudontheseabed

D）oilwasformedfromseawaterbyprocessesofchemistry,

pressureandtemperature

13."

Wherethereisshale,thereislikelytobeoil."

Theauthor

saysthisinordertoshowthat______.

A）oilwasfirstformedundersea

B）shaleisasedimentaryrock

C）oilwasmadefromshale

D）shaleisanotherformofoil

14.Thefirstthreeareasofoildepositsarementionedinasingle

paragraph,whereasthefourthareaismentionedinaseparate

paragraph.Thisisbecause______.

A）thefourthareahasnotbeendevelopedyetandmayneverbe

developed

B）thefourthareaisalongwayfromNorthAmerica

C）itsoilfieldsarealreadyexhausted

D）thefourthareaisagoodplacetodevelopatomicpower

15.Progressinusingatomicpowermay_______.

A）saveallthetroubleofdrillingforoil

B）giverisetoanewkindofoil-drivenengine

C）reducethecostofdrillingneartheNorthPole

D）makeitnecessarytodrillneartheNorthPole

Questions16to20arebasedonthefollowingpassage:

Averyimportantworldproblemistherapidlyincreasingpressureofpopulationonlandandonlandresources.

Itisnotsomuchtheactualpopulationoftheworldbutitsrateofincreasewhichisimportant.Itworksouttobeabout1.6percentperannumnetincrease.Intermsofnumbersthismeanssomethinglikefortytofifty-fivemillionadditionalpeopleeveryyear.Canadahasapopulationoftwentymillion--ratherlessthansixmonths'

climbinworldpopulation.TakeAustralia.TherearetenmillionpeopleinAustralia.So,ittakestheworldlessthanthreemonthstoaddtoitselfapopulationwhichpeoplesthatvastcountry.Letustakeourowncrowdedcountry--EnglandandWales:

forty-fivetofiftymillionpeople--justaboutayear'

ssupply.

Bythistimetomorrow,andeveryday,therewillbeaddedtotheearthabout120,000extrapeople,justaboutthepopulationofthecityofYork.

Thisenormousincreaseofpopulationwillcreateimmenseproblems.ByA.D.2000,unlesssomethingdesperatehappens,therewillbeasmanyas7,000,000,000peop