高考英语二轮复习专题1阅读理解考点3主旨大意题即时巩固.docx

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1、主旨大意题A(2018·天津，C)There’sanewfrontierin3Dprintingthat’sbeginningtocomeintofocus：food.Recentdevelopmenthasmadepossiblemachinesthatprint，cook，andservefoodsonamassscale.Andtheindustryisn’tstoppingthere.FoodproductionWitha3Dprinter，acookcanprintcomplicated

2、chocolatesculpturesandbeautifulpiecesfordecorationonaweddingcake.Noteverybodycandothat—ittakesyearsofexperience，butaprintermakesiteasy.ArestaurantinSpainusesaFoodinito“re－createformsandpieces”offoodthatare“exactlythesame，”freeingcookstocompleteotherta

3、sks.Inanotherrestaurant，allofthedishesanddessertsitservesare3D－printed，ratherthanfarmtotable.Sustainability(可持续性)Theglobalpopulationisexpectedtogrowto9.6billionby2050，andsomeanalystsestimatethatfoodproductionwillneedtoberaisedby50percenttomaintaincurr

4、entlevels.Sustainabilityisbecominganecessity.3Dfoodprintingcouldprobablycontributetothesolution.Someexpertsbelieveprinterscouldusehydrocolloids(水解胶体)fromplentifulrenewableslikealgae(藻类)andgrasstoreplacethefamiliaringredients(烹饪原料).3Dprintingcanreducef

5、ueluseandemissions.Grocerystoresofthefuturemightstock“food”thatlastsyearsonend，freeingupshelfspaceandreducingtransportationandstoragerequirements.NutritionFuture3Dfoodprinterscouldmakeprocessedfoodhealthier.HodLipson，aprofessoratColumbiaUniversity，sai

6、d，“Foodprintingcouldallowconsumerstoprintfoodwithcustomizednutritionalcontent，likevitamins.Soinsteadofeatingapieceofyesterday’sbreadfromthesupermarket，you’deatsomethingbakedjustforyouondemand.”ChallengesDespiterecentadvancementsin3Dfoodprinting，theind

7、ustryhasmanychallengestoovercome.Currently，mostingredientsmustbechangedtoapaste(糊状物)beforeaprintercanusethem，andtheprintingprocessisquitetime－consuming，becauseingredientsinteractwitheachotherinverycomplexways.Ontopofthat，mostofthe3Dfoodprintersnowarer

8、estrictedtodryingredients，becausemeatandmilkproductsmayeasilygobad.Someexpertsareskepticalabout3Dfoodprinters，believingtheyarebettersuitedforfastfoodrestaurantsthanhomesandhigh－endrestaurants.文章大意：本文是一篇科普文章。它主要介绍了3D食物打印机的优点和缺点。❶　Whatbenefitdoe