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1、Unit7What'sthehighestmountainintheworld?SectionA11a—2cdeserttheSaharamountainQomolangmarivertheNileSeatheCaspinDoyouknowtheseplaces?QomolangmaQomolangmarunsalongtheborderbetweenChinaandNepal.Itiscoveredwithsnowalltheyearround.(It’s8,844.43metershigh,thehighestintheworld.)TheNileisthelongestriverint
2、heworld.(It’smorethan6,671kilometerslong.)Itrunsthrough9countries,andrunsintotheMediterraneanSea(地中海)intheend.TheNileTheCaspianSeaTheCaspianSeaisthedeepestsaltlakeintheworld.(It’s1,025metersdeep.)ItliesintheborderbetweenAsiaandEurope.TheSaharaisthebiggestdesertintheworld.(It’sabout9,600,000squareki
3、lometersinsize.)ItislocatedinthenorthernAfrica,climateconditionsareverybad.Itisnotsuitableforbiologicalsurvival.TheSaharaTheYangtzeRiveristhethirdlongestriverintheworld.It’soneofthelongestriversinChina.(It’s6,300kilometerslong.)TheYangtzeRiverBasin,east-westwidthof3,219kilometers,about966kilometers
4、widenorth-south,passingthrough11provinces.ItrunsintotheEastSeainShanghaifinally.TheYangtzeRiverWhatisthehighestmountainintheworld?Talkaboutthesepicturesinpairs.Whichisthelongestriverintheworld?Whatisthebiggestdesertintheworld?Whichisthedeepestsaltlakeintheworld?Whichisthethirdlongestriverintheworld
5、?100onehundred1,000onethousand10,000tenthousand(1万)100,000onehundredthousand(十万)1,000,000onemillion(1百万)10,000,000tenmillion(1千万)100,000,000onehundredmillion(1亿)1,000,000,000onebillion(十亿)3005,0006,3005,4641,0258,844.43threehundredfivethousandsixthousand,threehundredfivethousand,fourhundredandsixty
6、-fouronethousandandtwenty-fiveeightthousand,eighthundredandforty-fortypointfourthree1aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershigh1bListenandcompletethesentences.1.Qomolangmais______thananyotherm
7、ountainintheworld.2.TheSaharais____________desertintheworld.3.TheCaspianSeais____________ofallthesaltlakes.4.TheNileis_________riverintheworld.higherthebiggestthedeepestthelongestQomolangmaisthehighestmount
