高英语第一册第三课课后练习答案

练习答案： Lesson 3 Ships in the DesertI.　 1)The writer went to the Aral Sea to search for t

Lesson3ShipsintheDesert 练习答案： I. 1)ThewriterwenttotheAralSeatosearchfortheunderlyingcauses oftheenvironmentalcrisis.Whathesawtherewashotdrysand. 2)Itwastheannuallayersoficeinacoresampledugfromtheglacier. 3)Scientistsweremonitoringtheairseveraltimesadaytochartthe courseoftheclimatechange. 4)Becausethepolarcapplaysacrucialroleintheworld'sweather system,thethinningofthepolarcapmightcausefloodinmanyplacesof theworld. 5)Therearemoredifferentspeciesofbirdsineachsquaremileofthe AmazonthanexistinallofNorthAmerica.Thedestructionofthe Amazonrainforestwillmeansilencingthousandsofsongswehave neverevenheard. 6)Thewritercallsnoctilucentclouds"ghostsinthesky".Asaresultof pollution,thecloudsoccasionallyappearwhentheearthisfirstcloakedin theeveningdarkness.Andtheyappearmoreoftenbecauseofahuge buildupofmethanegasintheatmosphere. 7)Becausewearenotyetawakenedtotakeeffectivemeasurestodeal withtheclimatechange. 8)Carbondioxide'sabilitytotrapheatintheatmospherecausesglobal warming.Becauseglobalwarmingseriouslythreatenstheglobalclimate