tpo句子简化题练习题

例1Theextremeseriousnessofdesertificationresultsfromthevastareasoflandandthetremendousnumbersofpeopleaffected,aswellasfromthegreatdifficultyofreversingorevenslowingtheprocess.○Desertificationisasignificantproblembecauseitissohardtoreverseandaffectslargeareasoflandandgreatnumbersofpeople.○Slowingdowntheprocessofdesertificationisdifficultbecauseofpopulationgrowththathasspreadoverlargeareasofland.○Thespreadofdesertsisconsideredaveryseriousproblemthatcanbesolvedonlyiflargenumbersofpeopleinvariouscountriesareinvolvedintheeffort.○Desertificationisextremelyhardtoreverseunlessthepopulationisreducedinthevastareasaffected.例2Importingthegrain,whichwouldhavebeenexpensiveandtimeconsumingfortheDutchtohaveproducedthemselves,keptthepriceofgrainlowandthusstimulatedindividualdemandforotherfoodstuffsandconsumergoods.○BuyingimportedgrainledtotheDutchdemandingthatotherfoodstuffsandconsumergoodsbeimported.○BecausetheDutchwereabletoimportinexpensivegrain,theyhadmoneyavailabletocreateademandforotherfoodproductsandconsumergoods.○KeepingthepriceofgrainlowwasaprimarygoaloftheDutchatatimewhentheycouldnotproduceenoughgraintoprovideforalltheirneeds.○ThedemandforotherfoodstuffsandconsumergoodsforcedtheDutchtoimportgrainandotherproductsatatimewhenmaintaininglowpriceswasespeciallyimportant.例3Seagrassbedsundertheinfluenceofstrongcurrentstendtohavemanyofthelighterparticles,includingseagrassdebris,movedout,whereasbedsinweakcurrentareasaccumulatelighterdetritalmaterial.A.Lightparticlesanddebriscollectinsomeseagrassbeds,butarewashedoutofthoseaffectedbystrongcurrents.B.SeagrassbedsundertheinfluenceofstrongcurrentstendtoaccumulatemanyofthelighterparticlesfromotherbedsC.Thestrengthofthecurrentsdetermineshowquicklyaccumulatedseagrassdebrisismovedoutofthebeds.D.Seagrassdebrisandotherlightparticlesareoftenmovedfromareasofstrongcurrentstoareasofweakcurrents.例4Hillsandmountainsareoftenregardedastheepitomeofpermanence,successfullyresistingthedestructiveforcesofnature,butinfacttheytendtoberelativelyshort-livedingeologicalterms.○Whentheyarerelativelyyoung,hillsandmountainssuccessfullyresistthedestructiveforcesofnature.○Althoughtheyseempermanent,hillsandmountainsexistforarelativelyshortperiodofgeologicaltime.○Hillsandmountainssuccessfullyresistthedestructiveforcesofnature,butonlyforashorttime.○Hillsandmountainsresistthedestructiveforcesofnaturebetterthanothertypesoflandforms.例5Herefusedtodevelopprojectiontechnology,reasoningthatifhemadeandsoldprojectors,thenexhibitorswouldpurchaseonlyonemachine-aprojector-fromhiminsteadofseveral.○Edisonwasmoreinterestedindevelopingavarietyofmachinesthanindevelopingatechnologybasedononlyone.○Edisonrefusedtoworkonprojectiontechnologybecausehedidnotthinkexhibitorswouldreplacetheirprojectorswithnewermachines.○Edisondidnotwanttodevelopprojectiontechnologybecauseitlimitedthenumberofmachineshecouldsell.○Edisonwouldnotdevelopprojectiontechnologyunlessexhibitorsagreedtopurchasemorethanoneprojectorfromhim.例6Inorderforthestructuretoachievethesizeandstrengthnecessarytomeetitspurpose,architectureemploysmethodsofsupportthat,becausetheyarebasedonphysicallaws,havechangedlittlesincepeoplefirstdiscoveredthem—evenwhilebuildingmaterialshavechangeddramatically.○Unchangingphysicallawshavelimitedthesizeandstrengthofbuildingsthatcanbemadewithmaterialsdiscoveredlongago.○Buildingmaterialshavechangedinordertoincreasearchitecturalsizeandstrength,butphysicallawsofstructurehavenotchanged.○Whenpeoplefirststartedtobuild,thestructuralmethodsusedtoprovidestrengthandsizewereinadequatebecausetheywerenotbasedonphysicallaws.○Unlikebuildingmaterials,themethodsofsupportusedinarchitecturehavenotchangedovertimebecausetheyarebasedonphysicallaws.例7Iftheporesarelarge,thewaterinthemwillexistasdropstooheavyforsurfacetensiontohold,anditwilldrainaway;butiftheporesaresmallenough,thewaterinthemwillexistasthinfilms,toolighttoovercometheforceofsurfacetensionholdingtheminplace;thenthewaterwillbefirmlyheld.○Surfacetensionisnotstrongenoughtoretaindropsofwaterinrockswithlargeporesbutitstrongenoughtoholdontothinfilmsofwaterinrockswithsmallpores.○Waterinrocksisheldinplacebylargeporesanddrainsawayfromsmallsizeporesthroughsurfacetension.○Smallporesandlargeporesbothinteractwithsurfacetensiontodeterminewhetherarockwillholdwaterasheavydropsorasathinfilm.○Iftheforceofsurfacetensionistooweaktoholdwaterinplaceasheavydrops,thewaterwillcontinuetobeheldfirmlyinplaceasathinfilmwhenlargeporesexist.例7.5Theextremeseriousnessofdesertificationresultsfromthevastareasoflandandthetremendousnumbersofpeopleaffected,aswellasfromthegreatdifficultyofreversingorevenslowingtheprocess.○Desertificationisasignificantproblembecauseitissohardtoreverseandaffectslargeareasoflandandgreatnumbersofpeople.○Slowingdowntheprocessofdesertificationisdifficultbecauseofpopulationgrowththathasspreadoverlargeareasofland.○Thespreadofdesertsisconsideredaveryseriousproblemthatcanbesolvedonlyiflargenumbersofpeopleinvariouscountriesareinvolvedintheeffort.○Desertificationisextremelyhardtoreverseunlessthepopulationisreducedinthevasta