考研英語歷年真題來源報刊閱讀100篇text3

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1、大家網(wǎng)[www.TopSage.com]考研英語歷年真題來源報刊閱讀100篇Text3　AmeatyquestionNO.3　　IFYOUhaveeverlongedforameatsubstitutethatsmeltandtastedliketherealthing,butdidnotinvolvekillingananimal,thenyourordercouldbereadysoon.Researchersbelieveitwillsoonbepossibletogrowculturedmeatinquantitieslargeenoughtoofferthemeat

2、industryanalternativesourceofsupply.　　Growingmusclecells(themaincomponentofmeat)inanutrientbrothiseasy.Thedifficultyispersuadingthosecellstoformsomethingthatresemblesrealmeat.PaulKosnik,theheadofengineeringatafirmcalledTissueGenesis,ishopingtodoitbystretchingthecellswithmechanicalanchors.Th

3、isencouragesthemtoformsmallbundlessurroundedbyconnectivetissue,anarrangementsimilartorealmuscle.　　RobertDennis,abiomedicalengineerattheUniversityofNorthCarolina,believesthesecretofgrowinghealthymuscletissueinalaboratoryistounderstandhowitinteractswithitssurroundings.Innature,tissuesexistase

4、lementsinalargersystemandtheydependonothertissuesfortheirsurvival.Withoutappropriatestimulifromtheirneighbourstheydegenerate.DrDennisandhisteamhavebeenworkingontheseneighbourlyinteractionsforthepastthreeyearsandreportsomesuccessinengineeringtwoofthemostimportant-thosebetweenmusclesandtendon

5、s,andmusclesandnerves.　　AttheTouroCollegeSchoolofHealthSciencesinNewYork,MorrisBenjaminsonandhisteamareworkingonremovinglivingtissuefromfish,andthengrowingitinculture.Thisapproachhastheadvantagethatthetissuehasafunctioningsystemofbloodvesselstodelivernutrients,soitshouldbepossibletogrowtiss

6、ueculturesmorethanamillimetrethick-thecurrentlimit.　　HenkHaagsman,ameatscientistattheUniversityofUtrechtintheNetherlands,istryingtomakemincedporkfromculturedstemcellswiththebackingofStegeman,asausagecompany.Itcouldbeusedinsausages,burgersandsauces.　　Butwhywouldanyonewanttoeatculturedmeat,ra

7、therthansomethingfreshlyslaughteredandjustoffthebone?Oneanswer,tomixmetaphors,isthatitwouldallowvegetarianstohavetheirmeatloafandeatittoo.Butthesausagemeatprojectsuggestsanotherreason:hygiene.AsIngridNewkirkofPETA,ananimalrightsgroup,putsit,"noonewhoco