2017-2018学年高中英语必修三课堂10分钟达标： Module 6 Period 1 Intr

1温馨提示：此套题为Word版，请按住Ctrl,滑动鼠标滚轴，调节合适的观看比例，答案解析附后。关闭Word文档返回原板块。课堂10分钟达标　　Adamisaman-madestructurebuiltacrossariver.Mostdamsarebuilttocontrolariver’swaterflow,improvenavigationandcontrolflooding.However,somedamsarebuilttoproducehydro-electricpower.Hydro-electricpowerisproducedaswaterpassesthroughadam,andintoariverbelow.Themorewaterthatpassesthroughadam,themoreenergyisproduced.Onceadamisbuilt,aman-madelakeiscreatedbehindthedam.Electricityisproducedbyakindofequipmentcalledaturbine(涡轮机).Turbinescontainmetalcoils(线圈)surroundedbymagnets(磁铁).Whenthemagnetsmoveroundrapidlyoverthemetalcoils,electricityisproduced.Turbinesarelocatedinsidedams.Thefallingwatermakesthemagnetsgoaroundthecoils.Damsprovidecleanenergy,buttheycanalsoharmtheenvironment.Speciesthatuseriverstoreproduceareoftenhurtbydams.InthenorthwestoftheUS,thepopulationoffisheshasdroppedfrom16millionto2.5millionsincehydro-electricplantswerebuiltontheColumbiaRiver.Damsallovertheworldhavehurtsomespecies.2ThehighestdamintheUnitedStatesislocatednearOroville,California.TheOrovilleDamtowers230metresandismorethanamilewide.Thisdamwasbuiltin1968,22yearsaftertheHooverDam.TheHooverDam,ontheNevada-ArizonabordercontrolstheColoradoRiver.Itis221metreshighandhas2.6millionhectare-metresofwater.ThehighestdamintheworldistheNurekDamontheVakhshRiverinTajikistan,acountryincentralAsia.Thisdamis300metrestall.【语篇概述】本文为说明文,主要介绍大坝的定义、作用、利弊和水力发电的原理,以及美国及世界上最高的大坝等知识。Ⅰ.Skimthepassageandfindthemainideaquickly._______________________________________________________________________________________________________________________________________答案：Thepassageaimstointroduceusaman-madestructure—Adamanditsadvantagesanddisadvantagesbygivingexamples.Ⅱ.Readthepassageagainandchoosethebestanswers.1.WhichofthefollowingisNOTtheadvantageofadamaccordingtothepassage?A.Tocontrolariver’swaterflow.B.Toimprovenavigationandtocontrolflooding.C.Toreducethepopulationofsomespeciesofanimals.3D.Toproducehydro-electricpower.【解析】选C。细节理解题。从第一段可知A、B、D三项正确,从第四段的...buttheycanalsoharmtheenvironment.Speciesthatuseriverstoreproduceareoftenhurtbydams.可知造成某些动物物种数量减少是大坝带来的负面作用,故C项不对。2.Thethirdparagraphmainlytellsus________.A.howhydro-electricpowerisproducedB.whataturbineisandhowitworksC.howthemagnetsandthemetalcoilsworkD.howthefallingwaterpassesthroughaturbine【解析】选A。主旨大意题。第三段主要告诉我们水电是怎样通过一些设备产生的,故答案为A。3.Whichofthefollowingcanexplaintheunderlinedword“reproduce”inthefourthparagraph?A.Produceyounganimals.　　　B.Findfoods.C.Livein.D.Makeasamephotograph.【解析】选A。词义猜测题。根据第四段InthenorthwestoftheUS,thepopulationoffisheshasdroppedfrom16millionto2.5millionsincehydro-electricplantswerebuiltontheColumbiaRiver.可推知,某些动物物种的数量在下降是因为建在河流上的大坝使得动物不能在水中繁殖,故选A。关闭Word文档返回原板块4