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1、核心素养测评五Module5ALessoninaLabⅠ.阅读理解AHackingisn’tjustforcomputersandsmartphones.Accordingtoastudy,scientistshavefoundawaytohackaplant’sgenesinordertomakeitusesunlightmorequickly.Someday,theresultscouldincreasethenumberoffoodproducedaroundtheworld. Scientistsusedtobaccoplantsinthestud
2、ybecauseitiseasytochangetheplants’genes.Hackedplantsarelargerthannormalplants. Photosynthesisisthewordusedtodescribehowplantsusesunlight,waterandcarbondioxidetomaketheirownfood.Scientistssaythisisaveryslowprocess.Plantsuselessthan1percentoftheenergy.Butbyhackingaplant’sgenes,thesc
3、ientistswereabletoincreasetheamountofleafgrowthonplantsbetween14and20percent.Scientistshackedtheplant’sprotectivesystem.Normally,thissystemstartswhenaplantgetstoomuchsunlight.Whentheplantsensesthelight,itcreatesmoreleaves.Whentheplantisinshade,theprotectivesystemisturnedoff.Andthep
4、rocessisslow. Thenewstudyspeduptheprocessbychangingtheplant’sgenes,theprotectivesystemturnedonandoffmorequicklythannormal.Asaresult,leafgrowthontheplantsscientistsusedinthestudyincreased.Leafgrowthontwoplantsincreasedby20percent,whileleafgrowthonathirdplantincreasedby14percent.Sci
5、entistsconductedthestudyontobaccoplants.Buttheythinkthegeneticchangeswouldproducethesameresultsincornandrice. AgricultureprofessorTalaAwandasaidthestudymakessense,butcautionedtheyield(产量)mightnotbequitesohighforconventionalfoodcrops.Still,sheaddedinanemail,“thisstudyremainsabreakt
6、hrough”.【文章大意】本文是一篇说明文,介绍了科学家研究发现了通过植入植物基因使植物更快地利用阳光的方法,这种方法对提高粮食产量是个重大突破。1.WhichofthefollowingistrueaccordingtoParagraph1?9A.Wecanfindhackingonlyindigitaldevices.B.Aplant’sgenescanbechangedbyhacking.C.Hackingcanbeusedtochangewhateveryouwant.D.Hackinghasbeenusedinimprovingfoodprodu
7、ction.【解析】选B。细节理解题。根据第一段中的“scientistshavefoundawaytohackaplant’sgenesinordertomakeitusesunlightmorequickly”可知,科学家发现了一种通过植入植物基因使其更快地利用阳光的方法,由此可知,植物的基因可以通过植入来改变。2.Whydidscientistschoosetobaccoplantstostudy?A.Becausetheyareveryeasytoget.B.Becausetheirgenesareeasytochange.C.Becausethey
8、arelargerthanotherplants.D
