学术英语（理工)详细讲解答案_Unit3

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1、学术英语理工AcademicEnglishforScienceandEngineeringUnitContents1Preparingforlisteningtoalecture2Payingattentiontotheintroduction3Understandingtheideasthroughexamples4Followingalecturethroughsignalwords5MemorizingthepointsbytakingnotesUnit3ListeningtoLectures1P

2、reparingforlisteningtoalectureUnit3ListeningtoLecturesUnit3ListeningtoLectures1PreparingforlisteningtoalectureTipsbeforelisteningtoalecture:Findoutthetopicofthelecturetobedelivered.2)Researchthetopicbyreadingtherelatedsourcesortheassignedreadings.3)Fami

3、liarizeyourselfwiththesubjectandlistoutquestionsifpossible.4)Sortoutsubject-specificwordsandtermsthelecturemayuse.Unit3ListeningtoLectures1PreparingforlisteningtoalectureTipsbeforelisteningtoalecture:5)Checkthemeaningsandpronunciationsofthetermsandwords.

4、6)Bringlooseleafpaperorspiralboundnotebooks.Orbringalaptopifyouprefertotakenotesonitandiftheroomissetupwithamplepoweroutletsandspace.Unit3ListeningtoLectures1Preparingforlisteningtoalecture1Whatarethedefinitionsofthefollowingterms?1)CO2:2)ozonelayer:isag

5、reenhousegaswhichplaysamajorroleinglobalwarmingandanthropogenicclimatechange.Itisalsoamajorsourceofoceanacidificationwhichdissolvesinwaterformingcarbonicacid.isalayerinEarth’satmospherecontainingrelativelyhighconcentrationsofozone(O3).Unit3ListeningtoLec

6、tures1Preparingforlisteningtoalecture1Whatarethedefinitionsofthefollowingterms?3)greenhouse:4)methane:isastructurewithdifferenttypesofcoveringmaterials,suchasaglassorplasticroofandfrequentlyglassorplasticwalls;itheatsupbecauseincomingvisiblesolarradiation

7、fromthesunisabsorbedbyplants,soil,andotherthingsinsidethebuilding.isthesimplestalkane,themaincomponentofnaturalgas,andprobablythemostabundantorganiccompoundonearth.Therelativeabundanceofmethanemakesitanattractivefuel.Unit3ListeningtoLectures1Preparingfor

8、listeningtoalecture1Whatarethedefinitionsofthefollowingterms?5)KyotoProtocol:6)deforestation:isaprotocoltotheUnitedNationsFrameworkConventiononClimateChange(UNFCCCorFCCC),aimedatfightingglobalwarming.istheremovalofa