高考英语一轮复习unit13people课时练（2）北师大版必修5

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1、课时练(二)　阅读理解提速练(练速度)(限时：35分钟)Ⅰ.阅读理解A(2016·东北三省三校第一次联考)ScientistsinArgentinahavecreatedtheworld'sfirstcowwithtwohumangenesthatwillenableittoproducehumanlikemilk.Geneticengineeringwasusedtointroducethe“mothers'milk”genesintotheanimalbeforebirth,accordingtotheN

2、ationalInstituteofAgribusinessTechnologyinBuenosAires.Asanadult,theclonedcow“willproducemilkthatissimilartothatofhumans”，whichwillprove“adevelopmentofgreatimportanceforthenutritionofinfants(婴儿)”，saidtheinstitute.“Theclonedcow,namedRositaISA,isthefirstinthew

3、orldwithtwohumangenesthatcontaintheproteinspresentinhumanmilk，”saidthestatement.InApril,scientistsinChinapublisheddetailsofresearchshowingthattheyhadcreateddairycowswhichproducedmilkcontainingproteinsfoundinhumanbreastmilk.ButtheArgentineteamsaidtheChineseo

4、nlyintroducedonehumangene,whiletheirresearchinvolvedtwo,meaningthemilkwillmore_closely_resemblethatofhumans.“Ourgoalwastoraisethenutritionvalueofcows'milkbyaddingtwohumangenes,whichdogoodtotheimmunesystemofinfants，”saidAdrianMutto,fromtheNationalUniversityo

5、fSanMartinwhichworkedwiththeinstitute.CristinaKirchner,PresidentofArgentina,saidthescientificinstitutemadeallArgentinesproud.Shealsosaidthatshehadrejectedthe“honor”ofhavingthecownamedafterher.“TheycametotellmethatthenameisCristina,butwhatwomanwouldliketohav

6、eacownamedafterher?ItappearedtometobemorepropertocallitRosita.”语篇解读：本文是一篇科普说明文。阿根廷国家农业综合科技研究所的科学家们日前宣布，他们已成功培育出一头能够产类似人奶的奶牛。1．Whatisthepassagemainlyabout?A．Theimportanceofgeneticengineering.B．Waystoimprovemothers'milk.C．Aclonedcowtoproducehumanlikemilk.D．Ad

7、vancedagriculturaltechnologyinArgentina.解析：选C　主旨大意题。根据文章第一段可知，阿根廷的科学家们已成功培育出一头能够产类似人奶的奶牛。故选C项。2．Whichofthefollowingcanbestreplace“morecloselyresemble”inParagraph4?A．havemorevarietiesthanB．bemoresimilartoC．havemorenutritionthanD．bemoredifferentfrom解析：选B　词义猜测

8、题。根据第四段的第二句可知，阿根廷的研究组称中国研究组仅放入了一个人类基因，而他们的研究包含了两个，这意味着产出的牛奶将和人奶更相似。故选B项。3．WhatcanbeinferredfromCristinaKirchner'sstatements?A．Shewasquitesatisfiedwiththeresearchdonebytheinstitute.B．Sheconsidereditanho