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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.Un
2、fortunately,thewaterthereisfartoodeepforeventhetallestwindmillstotouchbottom.AnexperimentunderwayoffthecoastofNorway,however,couldhelpputthemanywhere.Theproject,calledHywind,istheworld’sfirstlarge-scaledeepwaterwindturbine(涡轮发电机).Althoughitusesafairlystandard152-ton,2.3-meg
3、awattturbine,Hywindrepresentstotallynewtechnology.Theturbinewillbefixed213feetabovethewateronafloatingspar,atechnologyHywind’screator,theNorwegiancompanyStatoilHydro,hasdevelopedrecently.Thesteelspar,whichisfilledwithstonesandgoes328feetbelowtheseasurface,willbetiedtotheoce
4、anfloorbythreecables;thesewillkeepthesparstableandpreventtheturbinefrommovingupanddowninthewaves.Hywind’sstabilityinthecoldandroughseawouldprovethateventhedeepestcornersoftheoceanaresuitableforwindpower.Ifallgoesaccordingtotheplan,theturbinewillstartproducingelectricitysixm
5、ilesoffthecoastofsouthwesternNorwayasearlyasSeptember.Toproduceelectricityonalargescale,acommercialwindfarmwillhavetousebiggerturbinesthanHywinddoes,butit’sdifficultenoughtobalancesuchalargeturbinesohighonafloatingsparinthemiddleoftheocean.Tomakethatturbineheavier,thewholes
6、par’scenterofgravitymustbemovedmuchclosertotheocean’ssurface.Todothat,thecompanyplanstodesignanewkindofwindturbine,onewhosegearbox(变速箱)sitsatsealevelratherthanbehindtheblades.Hywindisatestrun,butthebenefitsforperfectingfloatingwind-farmtechnologycouldbe14extremelylarge.Outa
7、tsea,thewindisoftenstrongerandsteadierthanclosetoshore,whereallexistingoffshorewindmillsareplanted.Deep-seafarmsareinvisiblefromland,whichhelpsovercomethewindmill-as-eyesoreobjection.Ifthetechnologycatcheson,itwillopenupvastareasoftheplanet’ssurfacetooneofthebestlow-carbonp
8、owersourcesavailable.1.TheHywindprojectusestotallynewtechnologytoensurethestabilit
