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Unit4Whenwasitinvented?SectionB
Howdotheytaste?crispysalty
crispy
sweet
sweetsoft
bitter
sweetsoft
salty
1a.Fillintheblankswiththewords
given.soursweet,crispy,salty,soursaltysweetsweet
1b.Writethenameofadifferentfood
aftereachword.sweet:crispy:salty:sour:banana,apple,cakepotatochips,saladpizza,Frenchfriesapple,grape,lemon
2a.Listenandcircle“T”or“F”.
1.Potatochipswereinventedbymistake.2.Theywereinventedin1863.3.Thecustomerthoughtthepotatoesweren’tthinenough.4.Thecustomersaidtheyweren’tsaltyenough.5.Georgewantedtomakethecustomerhappy.6.Thecustomerwashappyintheend.TFTFFT
Thehistoryofpotatochips_____________thatpotatochipswereinventedbymistake?Potatochips_____________byachefcalledGeorgeCrum.Theywereinventedin_______.GeorgeCrumcookedthemforalongtimeuntilthey__________.Andhesprinkledlotsofsaltonthemsotheywere_____________.Didyouknowwereinvented1853werecrispyreallysalty2b.Listenagainandcompletethesentences.
Explanation1.Potatochipswereinventedbymistake.mistake作名词“错误，误会”。也能够作动词“弄错，出错”。常见形式有：makeamistake出错e.g.Youhavemadeamistakehere.mistake…for…错把……当作……Theymistookhimforhisbrother.bymistake错误地e.g.Theysentthelettertomebymistake.
2c.PairworkA:Didyouknowpotatochipswereinventedbymistake?B:Wow,Ididn’tknowthat.Whoinventedthem?A:itwasinventedbyachefcalledGeorgeCrum.
3a.Readthearticleandanswerthe
questions.Whoinventedtea?
1.Whatisthearticleabout?2.Whenwasitinvented?3.Whowasitinventedby?4.Howwasitinvented?Thehistoryoftea./Theinventionoftea.Overthreethousandyearsbefore1610.ShenNong.Byaccident.
Matchthemintosentences.Theteawasn’tbroughttothewesternworlduntil1610.ShenNongwasboilingdrinkingwateroveranopenfireSomeleavesfelltothewaterTheemperordec
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