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[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.Researchersbelieveitwillsoonbepossibletogrowculturedmea

2、tinquantitieslargeenoughtoofferthemeatindustryanalternativesourceofsupply.　　Growingmusclecells(themaincomponentofmeat)inanutrientbrothiseasy.Thedifficultyispersuadingthosecellstoformsomethingthatresemblesrealmeat.PaulKosnik,theheadofengineeringatafirmca

3、lledTissueGenesis,ishopingtodoitbystretchingthecellswithmechanicalanchors.Thisencouragesthemtoformsmallbundlessurroundedbyconnectivetissue,anarrangementsimilartorealmuscle.　　RobertDennis,abiomedicalengineerattheUniversityofNorthCarolina,believesthesecre

4、tofgrowinghealthymuscletissueinalaboratoryistounderstandhowitinteractswithitssurroundings.Innature,tissuesexistaselementsinalargersystemandtheydependonothertissuesfortheirsurvival.Withoutappropriatestimulifromtheirneighbourstheydegenerate.DrDennisandhis

5、teamhavebeenworkingontheseneighbourlyinteractionsforthepastthreeyearsandreportsomesuccessinengineeringtwoofthemostimportant-thosebetweenmusclesandtendons,andmusclesandnerves.　　AttheTouroCollegeSchoolofHealthSciencesinNewYork,MorrisBenjaminsonandhisteama

6、reworkingonremovinglivingtissuefromfish,andthengrowingitinculture.Thisapproachhastheadvantagethatthetissuehasafunctioningsystemofbloodvesselstodelivernutrients,soitshouldbepossibletogrowtissueculturesmorethanamillimetrethick-thecurrentlimit.　　HenkHaagsm

7、an,ameatscientistattheUniversityofUtrechtintheNetherlands,istryingtomakemincedporkfromculturedstemcellswiththebackingofStegeman,asausagecompany.Itcouldbeusedinsausages,burgersandsauces.　　Butwhywouldanyonewanttoeatculturedmeat,ratherthansomethingfreshlys

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