八下Unit 7 Section A 1

Unit7Whatsthehighestmountainintheworld?,SectionA1a2d,TheYangtzeRiveristhethirdlongestriverintheworld.Itsabout6,300kilometerslong.ItrunsintotheEastSea.,ChangJiangtheYangtzeRiver,Doyouknowtheseplaces?,Qomolangma珠穆朗玛,Qomolangmarunsalongtheborder(国界)betweenChinaandNepal(尼泊尔).Itiscoveredwithsnowalltheyearround.Its8,844.43metershigh.Itisthehighestmountainintheworld.,TheNileisthelongestriverintheworld.Its6,671kilometerslong.Itrunsthrough(流经)9countriesandrunsinto(注入)theMediterraneanSea(地中海)intheend.,theNile尼罗河,theCaspianSea里海,TheCaspianSeaisthedeepestsaltlakeintheworld.Itliesin(位于)theborderbetweenAsia(亚洲)andEurope.,TheSaharaisthebiggestdesert(沙漠)intheworld.Itislocatedin(位于)thenorthern(北方的)Africa.,theSahara撒哈拉,1aMatchthefactsyouknow.,is,Itismeter(s)/kilometer(s)long(high/deep/wide),表示物体有多少米/千米长（高/深/宽等）。,1bListenandcompletethesentences.,1.Qomolangmais_thananyothermountainintheworld.2.TheSaharais_desertintheworld.3.TheCaspianSeais_ofallthesaltlakes.4.TheNileis_riverintheworld.,higher,thebiggest,thedeepest,thelongest,2aListenandnumberthefacts(1-4)intheorderyouhearthem.,_TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld.ItsalotbiggerthanthepopulationoftheUS._Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,anditisthebiggestcountryinAsia.,4,2,1,3,2bListenagainandfillintheblankswiththenumbersinthebox.,6,3005,0005,464300,_TheYangtzeRiverisabout_kilometerslongandtheYellowRiveris_kilometerslong._Chinahasthebiggestpopulationintheworld.ItsalotbiggerthanthepopulationoftheUS._Chinaisover_yearsold.IthasamuchlongerhistorythantheUS.TheUSisnoteven_yearsold._ChinaisalmostasbigastheUS,anditisthebiggestcountryinAsia.,4,2,1,3,6,300,5,464,5,000,300,2cMakeconversationsusingtheinformationin2a.,A:DidyouknowthatChinaisoneoftheoldestcountriesintheworld?B:Yes,Idid.itsmucholderthanmycountry.,TheGreatWall,Aguide(导游)takessometourists(观光者)there.Theyaretalkingaboutit.,2dReadandanswerthequestions:,1.Whichisthebiggestman-made