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Unit5PowerofIdeasSectionA(3a-3d)LearningObjectives1.Extractkeyinfoaboutinventionsusingwh-questionsandpassivevoiceinpasttense.2.Analyzehowtheradiochangedtheworldandevaluatewhatmakesaninventionuseful.3.Completeafactchartanduseittodescribeaninvention’shistoryandimpact.4.Appreciatehowinventionsconnecttheworldandunderstandtheirroleinhumanprogress.Whatcanyouseefromthepicture?古列尔莫・马科尼GuglielmoMarconiReadtheconversation.WhatdoesPeterthinkisthemostusefulinventionofalltime?Peterthinkstheradioisthemostusefulinvention.TheradioGuglielmoMarconi.Itwasinventedin1901.Peoplecouldenjoymusicfromartistsaroundtheworldmuchmoreeasily.Itmadenewsspreadaroundtheworldinseconds.Someotherimportantinventionsweredevelopedbecauseoftheradio.FuXing:Whatdoyouthinkisthemostusefulinventionofalltime,Peter?Peter:Ithastobetheradio.FuXing:Theradio?Why?Peter:Beforetheradiowasinvented,informationtravelledveryslowly.Theworldwasmademuchsmallerbytheradio.Suddenly,newscouldbespreadaroundtheworldinseconds.FuXing:Right.Whowastheinventor?Peter:AnItalianinventorcalledGuglielmoMarconi.Hedevelopedtheideainthe1890s.In1901,aradiomessagewassentacrosstheAtlanticOceanforthefirsttime.FuXing:Wow!Thatwasquiteadistanceatthattime.Peter:

Yeah.Andbecauseoftheradio,someotherimportantinventionsweredevelopedaswell.FuXing:Likethetelevision?Peter:That’sright.Italsohadabigeffectonmusic.Theradiomadeitmucheasierforpeopletoenjoymusicfromartistsaroundtheworld.Ithink...isthemostusefulinvention.Itwasinventedby...Itwasinventedin...Itchangedtheworldbecause...themobilephoneMartinCooperinventedthefirstmobilephonein1973.Itwasinventedin1973.Itmadeiteasierforpeopletocommunicate.Itchangedthewaypeoplesendandreceiveinformation.Ithelpedmakemoderncommunicationfasterandmoreconvenient.What:Who:When:How/Why:Ithink...isthemostusefulinvention.Itwasinventedby...Itwasinventedin...Itchangedtheworldbecause...A:Whatinventiondoyouthinkisthemostimportant?B:Ithinkthesmartphoneisthemostimportant.A:Why?B:BecauseIuseiteveryday.Iuseittocallmyparents,sendmessages,andtakephotos.Ialsouseitforhomeworkandgames.A:Whatdoesitlooklike?B:It’sthinandlig

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