新概念英语第四册第1315课练习及答案文档格式.docx

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新概念英语第四册第1315课练习及答案文档格式.docx

  b.usethecoringbit

  c.takenoteofthestratabelowthesurface

  d.bringupspecimenmaterialfromtimetotime

  4Ifyoudon'

tcontroltheoilpressure________.

  a.oilwillbeforcedtothesurfacewithgreatforce

  b.mudwillhavetobecirculateddownthedrillpipe

  c.youwillhavetocatchtheoilatthesurface

  d.waterwillgushtothesurface

  Structure句型

  5Theholesmadeforoilgodownas______as25,000feet.(1.1)

  a.many

  b.long

  c.far

  d.distant

  6Nothinghasdoneas_____astoimprovedeepdrillingasthesearchforoil.(11.3-4)

  b.much

  c.long

  d.far

  7Thegeologistneedstoknow______rocksthedrillhasreached.(1.8)

  a.that

  b.when

  c.how

  d.which

  8_____wegetdowntotheoil,itusuallyflowswithgreatpressure.(1.10)

  a.Immediately

  b.Thefirsttime

  c.Until

  d.Aslongas

  Vocabulary词汇

  9Theholesareonlyborings,lessthanafoot_____.(11.2-3)

  a.round

  b.across

  c.through

  d.along

  10Theengineatthetopmakesthedrillpipego______.(1.6)

  a.upanddown

  b.inandout

  c.roundandround

  d.deeperanddeeper

  11______asampleisobtainedwithacoringbit.(11.8-9)

  a.Everynowandagain

  b.Inonewayoranother

  c.Oftenbutnotalways

  d.Afteralongtime

  12We_____avoidtheold,romanticideaofagusher.(1.12)

  a.makesurewe

  b.can'

t

  c.attempt

  d.tryto

 

 

课后习题答案:

  Unit13ACDACBDABCAD

【篇二】Unit14课后习题

  1Thereasonit'

shardtoforecasttheweatheristhat______.

  a.conditionsrapidlydeteriorate

  b.thereisalwaysturbulence

  c.onlysatelliteshaveapanoramicviewofconditions

  d.theeffectoftinychangescannotbedetectedorcalculated

  2Evenwithgridpointswhicharesixtymilesapart,forecasters_____.

  a.havetodependonsatellitesforinformation

  b.havetomakeassumptionsaboutsomeofthedata

  c.workonmodernweathermodels

  d.preventerrorsfrommultiplying

  3Whichofthesestatementsistrue?

  a.Theonlywaytosolvetheproblemistohavesensorsspacedatone-footintervals.

  b.Theonlywaytosolvetheproblemistohaveinfinitelypowerfulcomputers.

  c.Theonlywaytosolvetheproblemistohaveperfectlyaccuratereadings.

  d.Atpresent,thereisnowayofmakingabsolutelyaccuratepredictions.

  4Tinyvariationsintemperature,pressureandhumidity_____.

  a.willbepickedupbysensorsatone-minuteintervals

  b.areusedtopredicttheweatheronemonthahead

  c.canleadtocompletelyunexpectedweatherconditions

  d.produceexpectedresults

  5Generallyspeaking,anyprediction______rapidly.(1.2)

  a.isdeteriorating

  b.hasdeteriorated

  c.willdeteriorate

  d.haddeteriorated

  6Onlysatellites_______seecontinent-sizefeatures.(11.5-6)

  a.areableto

  b.could

  c.arepossible

  d.arecapable

  7_____theearthcouldbecoveredwithsensors.(11.9-10)

  a.Providingthat

  b.Onconditionthat

  c.Say

  d.Allowingthat

  8Thecomputerwillbeincapable______whetherPrincetonwillhavesunorrainonemonthaway.(11.13)

  a.predict

  b.topredict

  c.ofpredicting

  d.predicting

  9Theworld'

sbestweatherforecastsarebasedon_______.(1.1)

  a.certainknowledge

  b.guesswork

  c.scientificfacts

  d.accuratecalculation

  10Themodernweathermodelsworkwitha_____ofpoints.(1.7)

  a.scale

  b.balance

  c.line

  work

  11‘Humidity’refersto______.(1.11)

  a.light

  b.watervapour

  c.pressure

  d.heat

  12Aninfinitelypowerfulcomputertakesinallthedataand_____whatwillhappen.(11.11-12)

  a.predicts

  b.foretells

  c.estimates

  d.worksout

课后习题答案:

  Unit14DBDCCACCBDBD

【篇三】Unit15 

课后习题

  1Fearofindustrialespionage______.

  a.leadstolackoffreedominscientificresearch

  b.especiallyappliestoscientificresearchofageneralandfundamentalnature

  c.canleadtosecrecyinscientificresearch

  d.createsanatmosphereofdistrustinbusiness

  2Whichofthesestatementsistrue?

  a.Somekindsofscientificresearchare‘moresecret’thanothers.

  b.Allkindsofscientificresearcharetopsecret.

  c.Firmsnevertellanyoneanythingabouttheirscientificresearch.

  d.Scientificresearchworkersneverspeaktoeachother.

  3Firmswanttobesure______.

  a.theylimitallthoseengagedincarryingoutscientificresearch

  b.thatlargercompaniescan'

tfindoutabouttheirscientificresearch

  c.theyareworkinginanatmosphereofcompletesecrecy

  d.theyowntherightstointellectualpropertybeforetheyrevealwhatthey'

redoing

  4Thepossibilityofmakingdiscoveriesbyaccident______.

  a.makeitdifficulttoobtainscientificbooksfromlibraries

  b.encouragescompetitionfromotheragents

  c.increasestheneedforsecrecy

  d.meansthateverydiscoveryhastobepatented

  5Oneisthegeneralatmosphereofsecrecy______.(11.1-2)

  a.whichitiscarriedout

  b.whichiscarriedout

  c.itiscarriedout

  d.itiscarriedoutin

  6______anyinquiryisasecretone,itnaturallylimits-(1.3)

  a.Withregardto

  b.Aswellas

  c.Supposingthat

  d.Totheextentthat

  7Someofthebiggerfirmsareengagedinresearcheswhichare______generalthatitisapositiveadvantagetothemnottokeepthemsecret.(11.6-7)

  a.such

  b.so

  c.sothat

  d.inorderthat

  8They______evenmoreprocessesassecretprocesses.(11.8-9)

  a.keep

  b.kept

  c.arekept

  d.arekeeping

  9Thereisthe______offreedomoftheindividualresearchworker.(1.2)

  a.loss

  b.emptiness

  c.absence

  d.luck

  10Itnaturallylimitsallthoseengagedin______.(1.3)

  a.performingit

  b.involvingit

  c.betrothedtoit

  d.allowingit

  11Itis______nottokeepthemsecret.(11.6-7)

  a.withtheirknowledge

  b.ontheiraccount

  c.intheirbestinterests

  d.fortheirbenefit

  12Sometimesthesecrecygoestosucha______that...(1.1.10-11)

  a.degree

  b.process

  c.limit

  d.period

  Unit15CADCDDBACACA

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