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1、兰州一中2015-2016-I学期高三年级期中考试试题英语说明：本试卷分第I卷（选择题）和第II卷（非选择题）两部分，满分120分。考试时间100分钟。答案写在答题卡上，交卷时只交答题卡。第一部分阅读理解（共两节，满分40分）第一节(共15小题；每小题2分，满分30分)阅读下列短文，从每题所给的四个选项(A、B、C和D)中,选出最佳选项。AAccordingtotheUSgovernment,windfarmsoffthePacificcoastcouldproduce900gigawattsofelectricityeveryyear.Unfortun
2、ately,thewaterthereisfartoodeepforeventhetallestwindmillstotouchbottom.AnexperimentunderwayoffthecoastofNorway,however,couldhelpputthemanywhere.Theproject,calledHywind,istheworld’sfirstlarge-scaledeepwaterwindturbine(涡轮发电机).Althoughitusesafairlystandard152-ton,2.3-megawattturbine
3、,Hywindrepresentstotallynewtechnology.Theturbinewillbefixed213feetabovethewateronafloatingspar,atechnologyHywind’screator,theNorwegiancompanyStatoilHydro,hasdevelopedrecently.Thesteelspar,whichisfilledwithstonesandgoes328feetbelowtheseasurface,willbetiedtotheoceanfloorbythreecabl
4、es;thesewillkeepthesparstableandpreventtheturbinefrommovingupanddowninthewaves.Hywind’sstabilityinthecoldandroughseawouldprovethateventhedeepestcornersoftheoceanaresuitableforwindpower.Ifallgoesaccordingtotheplan,theturbinewillstartproducingelectricitysixmilesoffthecoastofsouthwe
5、sternNorwayasearlyasSeptember.Toproduceelectricityonalargescale,acommercialwindfarmwillhavetousebiggerturbinesthanHywinddoes,butit’sdifficultenoughtobalancesuchalargeturbinesohighonafloatingsparinthemiddleoftheocean.Tomakethatturbineheavier,thewholespar’scenterofgravitymustbemove
6、dmuchclosertotheocean’ssurface.Todothat,thecompanyplanstodesignanewkindofwindturbine,onewhosegearbox(变速箱)sits·15·atsealevelratherthanbehindtheblades.Hywindisatestrun,butthebenefitsforperfectingfloatingwind-farmtechnologycouldbeextremelylarge.Outatsea,thewindisoftenstrongerandstea
7、dierthanclosetoshore,whereallexistingoffshorewindmillsareplanted.Deep-seafarmsareinvisiblefromland,whichhelpsovercomethewindmill-as-eyesoreobjection.Ifthetechnologycatcheson,itwillopenupvastareasoftheplanet’ssurfacetooneofthebestlow-carbonpowersourcesavailable.1.TheHywindprojectu
8、sestotallynewtechnologytoensurethestabil
