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1、专题十五 主旨大意高考英语(天津市专用)A组 自主命题·天津卷题组Passage1(2018天津夏,C)词数:365There?sanewfrontierin3Dprintingthat?sbeginningtocomeintofocus:food.Recentdevelop-menthasmadepossiblemachinesthatprint,cook,andservefoodsonamassscale.Andtheindus-tryisn?tstoppingthere.FoodproductionWitha3Dprinter
2、,acookcanprintcomplicatedchocolatesculpturesandbeautifulpiecesfordeco-rationonaweddingcake.Noteverybodycandothat—ittakesyearsofexperience,butaprintermakesiteasy.ArestaurantinSpainusesaFoodinito“re-createformsandpieces”offoodthatare“exactlythesame,”freeingcookstocomplet
3、eothertasks.Inanotherrestaurant,allofthedishesanddessertsitservesare3D-printed,ratherthanfarmtotable.Sustainability(可持续性)五年高考Theglobalpopulationisexpectedtogrowto9.6billionby2050,andsomeanalystsestimatethatfoodproductionwillneedtoberaisedby50percenttomaintaincurrentlev
4、els.Sustainabilityisbecominganecessity.3Dfoodprintingcouldprobablycontributetothesolution.Someexpertsbe-lieveprinterscouldusehydrocolloids(水解胶体)fromplentifulrenewableslikealgae(藻类)andgrasstoreplacethefamiliaringredients(烹饪原料).3Dprintingcanreducefueluseandemissions.Groc
5、erystoresofthefuturemightstock“food”thatlastsyearsonend,freeingupshelfspaceandreducingtransportationandstoragerequirements.NutritionFuture3Dfoodprinterscouldmakeprocessedfoodhealthier.HodLipson,aprofessoratColumbiaUniversity,said,“Foodprintingcouldallowconsumerstoprint
6、foodwithcustomizednutritionalcontent,likevitamins.Soinsteadofeatingapieceofyesterday?sbreadfromthesupermarket,you?deatsomethingbakedjustforyouondemand.”ChallengesDespiterecentadvancementsin3Dfoodprinting,theindustryhasmanychallengestoovercome.Currently,mostingredientsm
7、ustbechangedtoapaste(糊状物)beforeaprintercanusethem,andtheprintingprocessisquitetime-consuming,becauseingredientsinteractwitheachotherinverycomplexways.Ontopofthat,mostofthe3Dfoodprintersnowarerestrictedtodryingredientsbecausemeatandmilkproductsmayeasilygobad.Someexperts
8、areskepticalabout3Dfoodprinters,believingtheyarebettersuitedforfastfoodrestaurantsthanhomesandhigh-endrestaurants.1.W
