Unit9Theworld’shighestmountainis8,844metershigh.SectionAThehighestmountainintheworldQomolangmaHowhighisQomolangma?It’s8,844metershigh.TheheightofQomolangmais8,844meters.Thehighestmountainintheworldis8,844metershigh.ThelongestriverinAsiatheYangtzeRiverHowlongistheYangtzeRiver?It’s6,300kilometerslong.ThelengthoftheYangtzeRiveris6,300kilometers.ThelongestriverinAsiais6,300kilometerslong.ThebiggestdesertintheworldtheSaharaHowbigistheSahara?It’sabout8,000,000squarekilometersinsize.Thebiggestdesertintheworldisabout8,000,000squarekilometersinsize.theGiantPandaostnimalsOneofthem____endangereda______intheworldisthegiantpanda.Thereareonlyabout1,600left.(剩下）1.玻璃杯里还剩下一点水。Thereisalittlewaterleftintheglass.2.我们还剩下一点时间。Wehavealittletimeleft.__TheNileis_____kilometerslong,andtheYellowRiverisabout_______kilometerslong.__ThepopulationofSingaporeisabout_________,whichisalotoflessthanthepopulationofMalaysia,whichisabout20,000,000.__Thefastestanimalintheworldisthecheetah.Itcanrunabout100kilometersperhour.Theslowestisthetortoise.Itmovesat_____kilometersperhour.__MountTaiis_____metershigh.ItismuchlowerthanQomolangma.2aListenandnumberthefactsintheorderyouhearthem.14326,6706,3004,000,0000.091,545HowlongistheNile?Itis6,670kilometerslong.HowlongistheYellowRiver?It’s5,500kilometerslong.HowhighisMountTai?It’s1,545metershigh.What’sthepopulationofSingapore?ThepopulationofSingaporeis4,000,000.What’sthepopulationofMalaysia?ThepopulationofMalaysiais20,000,000.NametallheavylazyMakeasurvey1.Thebiggestd_____intheworldistheSahara.2.Theriveristood____toswimin.3.Chinaisoneoftheoldest___________(文明)intheworld.esertirtycivilizationsExercise4.Thes______ofthefastestanimalis120kilometersperhour.5.—Whats____doyouneedforyourcoat?—Iwantalargeone.peedizeGrammar形容词和副词的比较级和最高级形容词和副词的比较级和最高级（规则变化）单音节词和少数多音节词一般在词尾加-er或-est原级比较级最高级highstrongfastslowhigherhigheststrongerstrongestfasterfastestslowerslowest以字母e结尾的词，...
