高中英语Module6SectionⅠⅠntroduction＆Readingprereading课件外研版必修3.ppt

《高中英语Module6SectionⅠⅠntroduction＆Readingprereading课件外研版必修3.ppt》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

1、Module6SectionⅠStep1Step2Step3Step4Step51．Couldyoutellussomehistoricalsites?Whichonehaveyouvisited?2．IsitdangerouswhenwaterrosetothemaximumlevelatChina‘sThreeGorgesDam?Waterrosetothemaximum(最高的)levelatChina'sThreeGorgesDam,drivingelectricityoutputtofullca

2、pacity(生产量)attheworld'slargesthydropowerplantforthefirsttimesinceitbeganoperating.Thedamisa＄23billionprojectontheupperreachesofChina‘slongestriver,theYangtzeRiver.Itwasbuilttoendcenturiesoffloodsandtoprovideenergytofuelthecountry’seconomicgrowth.Construct

3、ionofthe410milelong(660kilometerlong)reservoirbeganin1993anditbeganstoringwaterin2003.Itswaterlevelhititspeakheightof175metersat9amonTuesday,accordingtoprojectoperator,theChinaThreeGorgesProjectCorp.Thepreviousrecordwas172.8meters(567feet)setin2008,theyea

4、rwhenthegeneratorsbeganoperating.CompanychairmanCaoGuangjingcalledita“historicmilestone”.Hesaidannualpowergenerationwouldreach84.7billionkilowatthours,whichwouldenabletheprojecttorealizeitsfunctionofpowergenerationtothefull.Toreachthatlevel,damofficialsha

5、dbegunholdingbackwaterinSeptember.Thewaterlevelwillbekeptatthecurrentheightforabouttwomonthsandthenbeallowedtodrop.Inthefuture,thewaterlevelwillbekeptbetween145meters(476feet)and175meters(574feet),dependingonfloodcontrolneeds.Butthatcouldcarryrisks.Lastye

6、ar,aChinesemagazineCaijingmentionedagovernmentreportthatwarnedthatrisingwaterlevelswereincreasinglandsliderisksasthesoilaroundthedambecamemoreunsettled.ButexpertYanEchuan,partofanexpertteamhiredbythegovernmenttoassess(评估)geologicalrisksoftheproject,saidhe

7、didn‘tbelievethatkeepingthewateratthemaximumlevelcausedanincreaseddangersincewaterlevelshadbeenashighas172meters(564feet)inthepastmonths.“Theoretically(理论上),therewouldberisksoflandslides，”hesaid.“Butitdoesnotmaketoomuchdifferenceifthewaterlevelisraisedtwo

8、orthreemetersfrom172to175meters.There‘snosubstantive(实质的)changeinthelocalgeologicalconditions.”Readthefollowingpicturesandchoosetheproperwordfromthegivenonesforeachpicture.A．gorgeB．canalC．damD．ReservoirE．airportF．Cl