2019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

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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，acookcanprintcomplicatedchocolatesculpturesandbeauti

2、fulpiecesfordecorationonaweddingcake.Noteverybodycandothat—ittakesyearsofexperience，butaprintermakesiteasy.ArestaurantinSpainusesaFoodinito“re－createformsandpieces”offoodthatare“exactlythesame，”freeingcookstocompleteothertasks.Inanotherrestaurant，allofthedishesanddessertsitserve

3、sare3D－printed，ratherthanfarmtotable.Sustainability(可持续性)Theglobalpopulationisexpectedtogrowto9.6billionby2050，andsomeanalystsestimatethatfoodproductionwillneedtoberaisedby50percenttomaintaincurrentlevels.Sustainabilityisbecominganecessity.3Dfoodprintingcouldprobablycontributeto

4、thesolution.Someexpertsbelieveprinterscouldusehydrocolloids(水解胶体)fromplentifulrenewableslikealgae(藻类)andgrasstoreplacethefamiliaringredients(烹饪原料).3Dprintingcanreducefueluseandemissions.Grocerystoresofthefuturemightstock“food”thatlastsyearsonend，freeingupshelfspaceandreducingtra

5、nsportationandstoragerequirements.NutritionFuture3Dfoodprinterscouldmakeprocessedfoodhealthier.HodLipson，aprofessoratColumbiaUniversity，said，“Foodprintingcouldallowconsumerstoprintfoodwithcustomizednutritionalcontent，likevitamins.Soinsteadofeatingapieceofyesterday’sbreadfromthes

6、upermarket，you’deatsomethingbakedjustforyouondemand.”ChallengesDespiterecentadvancementsin3Dfoodprinting，theindustryhasmanychallengestoovercome.Currently，mostingredientsmustbechangedtoapaste(糊状物)beforeaprintercanusethem，andtheprintingprocessisquitetime－consuming，becauseingredien

7、tsinteractwitheachotherinverycomplexways.Ontopofthat，mostofthe3Dfoodprintersnowarerestrictedtodryingredients，becausemeatandmilkproductsmayeasilygobad.Someexpertsareskepticalabout3Dfoodprinters，believingtheyarebettersuitedforfastfoodrestaurantsthanhomesandhigh－endrestaurants.文章大意

8、：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