【文档说明】2019-2020学年人教版英语选修九新素养同步讲义：Unit+2+Sailing+the+oceans+1　Unit+2　Section+Ⅰ　Warming+Up+%26+Reading—Prepa.docx，共(5)页，1.116 MB，由envi的店铺上传

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河流孕育着世界各地的文明，我们不能只是向她们索取，更重要的是要保护她们。在美国举行的RiverSpiritExchange活动，正在帮助中国和美国的青年们更好地了解对方，了解河流，从而一起协作，更好地保护河流。Sisterriversbuildculturalbr

idgebetweenUSandChinaTheMississippiisthemajorriversystemintheUnitedStates.TheYangtzeisChina’slongestriver.Althoughaworldapart，thetw

owaterwaysshareconservation(保护)concernsthatprovideaculturalbridgebetweenstudentsfromtheUnitedStatesandChina，aswellasfromotherpartsoftheworld.41studen

tsfromadozencollegesexploredasectionoftheMississippiinWisconsinandIowa，tolearnabouttheenvironment，andeachother.Thestudents，fromtheUS

，Chinaandothercountries，tookpartintheRiverSpiritExchangeprogram.Thecross-culturaleducationalexperien

cefocusesontheMississippiandChina’slongestriver，theYangtze.Thisthreedayget-togetherfeaturedstory-telling，campingandcanoeing(划独木舟)．It’spartofalar

gerlessonaboutconservationprojectsthatcanbeusedonboththeYangtzeandMississippi.AfterthegroupmetattheCrane

Foundationpreserve，theyheadedsouthtoanareaoftheKickapooRiver，wherea20-yearconservationprotectedthenatural

settingofthewaterway.TheeffortwasledbythedirectoroftheLowerWisconsinStateRiverwayBoard.Hetoldthegrouphewasproudofitssuccess.“Ibelievebecauseof

theRiverwayProjectwecanmakesurethatourgrandchildren’sgrandchildrenwillbeabletosetacanoeinthewatersoftheWisconsinRiverandbeabletoexperiencethesam

ebeautythatwecanseetodayandwhatNativeAmericanssawmanygenerationsbefore.”Butaccomplishingthatwasnoteasy.Hetoldthestudentssettingrulesforlogge

rs(樵夫)，farmers，landownersanddeveloperscausedangerandevenafewthreatsofviolencebetweenthetwosides.SimilardifficultiesweremetinChinawhenpeopleweretryi

ngtopreservetheYangtzeRiver.ChinesestudentLuXiaojunsaidtheMississippiandYangtzeRiverwereunitingthesestudentsfromoppositeendsoftheearth.“Wegot

toknoweachotherduringtheexchange，”hesaid.Hehopedthat，byworkingtogether，theywouldfindsolutionstopreservingthesewaterways.“Ithink

itcertainlyhelpedpeoplechangetheirthinkingandsotheycanlookbeyondnowtothefuture.”SectionⅠWarmingUp&Reading—Preparing1．m

ercyn．仁慈；宽恕；怜悯2．explorationn.探险；探测3．overheadadv.在头顶上；在空中；在高处adj.在头上的4．randomadj.任意的；随便的5．awkwardadj.难使用的；笨拙的6．referencen.参考7．minimumadj.最小的

；最低的8．secureadj.安全的；可靠的9．preciseadj.精确的；准确的10．simplifyvt.单一化；简单化11．shortcomingn.缺点；短处12．reliableadj.可靠的；可信赖的13

．updatevt.更新14．tendencyn.趋向；倾向1．atthemercyof受……支配2．workout制定出3．comparesth.withsth.把……与……相比较4．inrelationto...与……相关联5．makemistakes犯错误1．Howdo_you_think

seamenfoundtheirwaybeforemodernaccuratemethodsofnavigationwereinvented?你们认为现在精确的航海方法被发明之前海员们是怎么找到方法进行航海的？2．Wemaywellwonderhowseamenexpl

oredtheoceansbeforelatitudeandlongitudemadeitpossibleto_plot_a_ship’s_position_on_a_map．我们很可能感到奇怪，在经纬度被用来在地图上标出船只位置之前，海员是如何进行探索的。3．Thisseemsto_h

ave_beenthefirstandmostusefulformofexplorationwhichcarriedtheminimumamountofrisk.这似乎已是最早的、最有用的探险方式，所冒风险也最小。Ⅰ

Scanthetextandthenchoosethebestansweraccordingtothetext.1．Askilledseamancannotusethe________toplotaship’sposition.A．flagB．sunC．cloudsD．NorthSt

ar2．Theuseofseaweedisto________．A．judgewhethertheshipisclosetolandB．knowhowlongtheseamenlefttheirhomeC．tellth

edistanceofthelandandtheshipD．maketheirjourneymeaningful3．Howmanythingsdidtheseamenusebeforelatitudeandlongitudewereplotted?A．Four.B．Five.

C．Seven.D．Eight.4．Wecanlearnfromthetextthattherehadbeen________method(s)tofindlongitudebythe17thcentury.A．twoB．threeC

．oneD．no5．What’sthemainideaofthepassage?A．Whyearlyseamanwantedtosailtheocean.B．Thereisusefulinformationinanencyclopedia.C．Earlysailing

menwentexploringtheseasusingtheirskillsandsimpleinstruments.D．Latitudeandlongitudeareimportanttoplotaship’sposition.答案：1－5.AADACⅡFillin

theblanksaccordingtothetext.Thisreadingexplains1.____________seamenexploredtheoceansandwhatkindof2.____________(navigation)

instruments3.____________(use)tosailorsbeforetheseventeenthcentury4.____________theywerenavigatingtheopenseaswithout5.________

____(see)land.Thevoyagesoftravellersbeforethe6.____________(seventeen)centuryshowthattheywerenotat7.____________mercyoftheseaeventhoughtheydidnot

havemodernnavigationalaids.Theseamencouldusecelestialbodies，wildlife，theweatherortheseatokeepalongsidethecoastline.

Theycouldalsousethecompasstohelpfindthedirectionthattheshipneeds8.____________(go)．TheycouldusetheBearingCircletomeasurethesun’spositionan

dtelliftheyweresailingontheircorrectrather9.____________arandomcourse.Theastrolabe，quadrantandsextantcouldhe

lpgivetheseamenthelocaltimeandallowedthem10.____________(find)theirlatitudeatsea.答案：1.how2.navigational3.wereused4.whe

n5.seeing6.seventeenth7.the8.togo9．than10.tofind获得更多资源请扫码加入享学资源网微信公众号www.xiangxue100.com