高中英语Module6OldandNewPeriod1IntroductionReadingandVocabulary文本研读课课堂10分钟达标.docx

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1、Module6OldandNewPeriod1IntroductionReadingandVocabulary课堂10分钟达标　　Adamisaman-madestructurebuiltacrossariver.Mostdamsarebuilttocontrolariver’swaterflow,improvenavigationandcontrolflooding.However,somedamsarebuilttoproducehydro-electricpower.Hydro-electricp

2、owerisproducedaswaterpassesthroughadam,andintoariverbelow.Themorewaterthatpassesthroughadam,themoreenergyisproduced.Onceadamisbuilt,aman-madelakeiscreatedbehindthedam.Electricityisproducedbyakindofequipmentcalledaturbine(涡轮机).Turbinescontainmetalcoils(线圈

3、)surroundedbymagnets(磁铁).Whenthemagnetsmoveroundrapidlyoverthemetalcoils,electricityisproduced.Turbinesarelocatedinsidedams.Thefallingwatermakesthemagnetsgoaroundthecoils.Damsprovidecleanenergy,buttheycanalsoharmtheenvironment.Speciesthatuseriverstorepro

4、duceareoftenhurtbydams.InthenorthwestoftheUS,thepopulationoffisheshasdroppedfrom16millionto2.5millionsincehydro-electricplantswerebuiltontheColumbiaRiver.Damsallovertheworldhavehurtsomespecies.ThehighestdamintheUnitedStatesislocatednearOroville,Californi

5、a.TheOrovilleDamtowers230metresandismorethanamilewide.Thisdamwasbuiltin1968,22yearsaftertheHooverDam.TheHooverDam,ontheNevada-ArizonabordercontrolstheColoradoRiver.Itis221metreshighandhas2.6millionhectare-metresofwater.ThehighestdamintheworldistheNurekDa

6、montheVakhshRiverinTajikistan,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.___________________________________________________________________________________

7、____________________________________________________答案：Thepassageaimstointroduceusaman-madestructure—Adamanditsadvantagesanddisadvantagesbygivingexamples.Ⅱ.Readthepassageagainandchoosethebestanswers.1.WhichofthefollowingisNOTtheadvantageofadamaccordingto

8、thepassage?A.Tocontrolariver’swaterflow.B.Toimprovenavigationandtocontrolflooding.C.Toreducethepopulationofsomespeciesofanimals.D.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...buttheycanalsoharmtheenvir