高中英语阅读理解科技类三.doc
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高中英语阅读理解科技类三
Imagine,oneday,gettingoutofbedinBeijingandbeingatyourofficeinShanghaiinonlyacoupleofhours,andthen,afterafulldayofwork,goingbackhometoBeijingandhavingdinnerthere.
Soundsunusual,doesn'tit?
Butit'snotthatunrealistic,withthedevelopmentofChina’shigh—speedrailwaysystem.Andthat’snota11.Chinahasanevengreaterhigh—speedrailwayplan—toconnectthecountrywithSoutheastAsia,andeventuallyEasternEurope.
Chinaisnegotiatingtoextenditsownhigh·-speedrailwaynetworktoupto17countriesin10to15years,eventuallyreachingLondonandSingapore.
Chinahasproposedthreesuchprojects.ThefirstwouldpossiblyconnectKunmingwithSingaporeviaVietnamandMalaysia.AnothercouldstartinUrumqiandgothroughKazakhstanandUzbekistan,andpossiblytoGermany.ThethirdwouldstartinthenortheastandgonorththroughRussiaandthenintoWesternEurope.
IfChina’splanforthehigh-speedrailwaygoesforward,peoplecouldzipoverfromLondontoBeijinginundertwodays.
ThenewsystemwouldstillfollowChina’shigh—speedrailwaystandard.Andthetrainswouldbeabletogo346kilometersanhour,almostasfastassomeairplanes.
China’sbullettrain(高速客车),theoneconnectingWuhantoGuangzhou,alreadyhasthe
World’sfastestaveragespeed.Itcovers1,069kilometersinaboutthreehours.
Ofcourse,therearesometechnicalchallengestoovercome.Therearesomanyissuesthatneedtobesettled,suchassafety,railgauge(轨距),maintenanceofrailwaytracks.So,it’simportanttopayattentiontoeverydetail.
Butthekeyissueisreallymoney.Chinaisalreadyspendinghundredsofbillionsofyuanon
domesticrailwayexpansion.
Chinaprefersthattheothercountriespayinnaturalresourcesratherthanwithcapital
investment.ResourcesfromthosecountriescouldstreamintoChinatosustaindevelopment.
It’11beawin-winproject.Forothercountries,therailwaynetworkwilldefinitelycreatemoreopportunitiesforbusiness,tourismandsoon,nottomentionthebettercommunicationamongthosecountries.
ForChina,suchaprojectwouldnotonlyconnectitwiththerestofAsiaandbringsomemuch-neededresources,butwouldalsohelpdevelopChina’sfarwest.Weforeseethatinthecomingdecades,millionsofpeoplewillmigratetothewesternregions,wherethelandisemptyandresourcesunused.Withhigh-speedtrains,peoplewillsetupfactoriesandbusinesscentersinthewestonceandfora11.Andthey’11tradewithCentralAsianandEasternEuropeancountries.
67.China’snewhigh-speedrailwayplanwillbeawin-winprojectbecause.
A.Chinawillgetmuch-neededresourcesanddevelopitswesternregions
B.Chinaandthecountriesinvolvedwillbenefitfromtheprojectinvariousways
C.Chinawilldevelopitsrailwaysystemandcommunicationwithothercountries
D.theforeigncountriesinvolvedwilldeveloptheirrailwaytransportation,businessandtourism
68.Accordingtothepassage,thegreatestchallengetothenewhigh-speedrailwayplanis.A.technicalissuesB.safetyofthesystem
C.financialproblemsD.maintenanceofrailwaytracks
69.Whichofthefollowingwordsbestdescribestheauthor’sattitudetowardsChina’shigh-speed
railwayplan?
A.Critical.B.Reserved.C.DoubtfulD.Positive.
70.Whichofthefollowingmightbethebesttitleforthepassage?
A.NewRailwayStandardsB.BigRailwayDreams
C.High—speedBulletTrainsD.InternationalRailwayNetwork
B
Haveyouevernoticedthecolorofthewaterinariverorstreamafteraheavyrainfall?
Whatdoyouthinkcausedthischangeincolor?
Itissoilthathasbeenwashedintotheriverfromtheriverbankorfromthenearbyfields.
ComponentsofSoft
Soilismadeupofanumberoflayers(层),eachhavingitsowndistinctivecolorandtexture.Theupperlayerisknownasthelitter.Itactslikeablanket,limitingtemperaturechangesandreducingwaterloss.Thetopsoillayerismadeupofsmallparticlesofrockmixedwithrottenplantandanimalmattercalledhumus(腐殖质),whichisblackandgivesthetopsoilitsdarkcolor.Thislayerisusuallyrichinnutrients,oxygen,andwater.Belowthetopsoilisthesubsoil,alayerthatcontainsmorestonesmixedwithonlysmallamountsoforganicmatter.Thislayerislighterincolourbecauseofthelackofhumus.Beneaththesoilliesalayerofbedrock.
Soilformsfromthebottomup.Overtimebedrockisattackedbyrain,wind,frost,andsnow.Itisgraduallybrokendownintosmallerparticlesinaprocesscalledweathering.Plantsbegintogrow,androttenmaterialsenrichthetopsoil.MostofthesoilinEasternCanada,forexample,wasformedfromweatheredrockthatwasexposedwhentheicedisappearedl2,000yearsago.
WaterBeneaththeSoil
Surfacewatercollectsandflowsabovethegroundinlakes,ponds,andrivers.Onceinthesoilorrock,itiscalledgroundwater.Gr