英语听力IV课件听力4 13.ppt

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1、Unit13ScientificFrontierⅠListeningObjectivesTofamiliarizeyourselfwiththetopicofscientificinventions;TolearntotalkaboutscientificinventionsinEnglish.Unit13ScientificFrontierⅠNowsatellitesarehelpingtoforecasttheweather.Theyareinspace,andtheycanreachanypartoftheworld.Thesatellit

2、estakepicturesoftheatmosphere,becausethisiswheretheweatherforms.Today,nearlyfivehundredweatherstationsinsixtycountriesreceivesatellitepictures.Whentheyreceivenewpictures,themeteorologistscomparethemwithearlierones.Perhapstheymayfindthatthecloudshavechangedduringthelastfewhour

3、s.Thismaymeanthattheweatheronthegroundmaysoonchange,too.Intheirnextweatherforecast,themeteorologistscansaythat.Sotheweathersatellitesareagreathelptothemeteorologists.Beforesatelliteswereinvented,thescientistscouldforecasttheweatherforabout24or48hours.Nowtheycanmakegoodforecas

4、tsforthreeorfivedays.Soon,theymaybeabletoforecasttheweatherforaweekormoreahead.CultureTipUnit13ScientificFrontierⅠListentothefollowingsentencesandrepeat.1.Inthenextfewyears,computerswillbecomehandier.2.Themostcommonthemeinsciencefictionnovelsisthefuture.3.Scientistshaveproduc

5、ednewtypesofclothesthatwouldremainstainless.4.Futurejeanswillbesostrongthattheywon’tgetoldandworn.5.Noonewillhavetoliveonwelfareaseveryonewillhavejobs.6.Developmentinmedicalsciencewillenableustoliveforatleast120years.7.Tinyrobotsmaybesentaroundthecellsofourbodiestocureillness

6、.8.Wewillbeabletolinkourbrainstosmartcomputersandahugedatabase.9.Bythemiddleofthecentury,anewtypeofelectronichumanmighthavedeveloped.10.Bytheendofthecentury,we’llhavediscoveredotherplacesinoursolarsystemsuitableforliving.WarmingupSectionOneListeningSkillsSectionTwoListeningPr

7、acticeSectionThreeFurtherListeningSectionFourListeningAppreciationContents1SectionOneListeningSkillsInthissection,youwillhear8shortconversationsandtwolongconversations.Attheendofeachconversation,oneormorequestionswillbeaskedaboutwhatwassaid.Boththeconversationsandthequestions

8、willbespokenonlyonce.Aftereachquestiontherewillbeapause.Youmustreadt