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1、Unit7What'sthehighestmountainintheworld?Presentationsquaren.metern.deepadj.desertn.populationn.Asian.tourv.n.touristn.walln.amazingadj.ancientadj.wideadj.Howtoreadthenumbers642641,26414,4562,140,4560.424.64从右往左，每满三个数字要加一个逗号第一个逗号，可记作thousand第二个逗号，可记作million小数点读作point小数点后的数字，按个位基
2、数词依次读出读出下列数字：ninehundredandeighty-threefivehundredandsixty-sixsevenhundredandnine566__________________________________709__________________________________983__________________________________1,025onethousandandtwenty-five3,872threethousandeighthundredandseventy-two84,321eighty
3、-fourthousandthreehundredandtwenty-one158,230onehundredandfifty-eightthousand,twohundredandthirty18,657,421eighteenmillion,sixhundredandfifty-seventhousand,fourhundredandtwenty-one9,648,215ninemillion,sixhundredandforty-eightthousand,twohundredandfifteen3,765,358,230threebillio
4、n,sevenhundredandsixty-fivemillion,threehundredandfifty-eightthousand,twohundredandthirty.Doyouknowtheseplaces?QomolangmaQomolangmarunsalongtheborderbetweenChinaandNepal(尼泊尔).Itiscoveredwithsnowalltheyearround.HowhighisQomolangma?It’s8844.43metershigh.Itisthehighestmountaininth
5、eworld.Height:8,844.43metersTheNile(尼罗河)runsthrough9countries,it’soneofthelargestriverflowsthroughtheinternationalstatesintheworldandrunsintotheMediterraneanSea(地中海)intheend.It’sthelongestriverintheworld.HowlongistheNile?It’s6,671kilometerslong.length:6,671kilometerstheNiletheC
6、aspianSeaTheCaspianSeaisthedeepestsaltlakeintheworld.ItliesintheborderbetweenAsiaandEurope.HowdeepistheCaspianSea?It’s1,025metersdeep.depth:1,025metersTheSahara(撒哈拉沙漠)isthebiggestdesertintheworld.ItislocatedinthenorthernAfrica.Climateconditionsareverybad.theSaharaHowbigistheSha
7、ra?It’sabout9,600,000squarekilometersinsize.area:about9,600,000squarekilometers1aMatchthefactsyouknow.Qomolangmaabout9,600,000squarekilometersinsizeTheSahara1,025metersdeepTheCaspianSea6,671kilometerslongTheNile8,844.43metershigh1bListenandcompletethesentences.1.Qomolangmais___
8、___thananyothermountainintheworld.2.TheSaharais_______
