Researchonembryonicstemcells(胚胎干细胞)isdebatablebecauseitrequiresthedestructionoflivehumanembryos.Supportersfinditeasytominimizethesignificanceofthisfactbecausetheembryosareonlyafewdaysold—nothing

　　Researchonembryonicstemcells(胚胎干细胞)isdebatablebecauseitrequiresthedestructionoflivehumanembryos.

　　Supportersfinditeasytominimizethesignificanceofthisfactbecausetheembryosareonlyafewdaysold—nothingmorethan“blastocysts(胚泡)”.

　　Butifit’sOKtodestroy5-day-oldembryostofurtherscientificinquiryisitOKtodestroyembryosthatarefiveweeksold?Fivemonths?Eightmonths?Sciencecan’tanswerthatquestion.

　　Youdon’thavetobepartofthepro-lifegrouptohaveconcernsaboutthiskindofscientificresearch.JamesThomsontheUniversityofWisconsinbiologisthassaid“Ifhumanembryonicstemcellresearchdoesnotmakeyouatleastalittlebituncomfortableyouhavenotthoughtaboutitenough.”Howeverthepresident’snewordersuggestsweshouldnotthinktoomuch.

　　Recentlysupportersofembryonicstemcellresearchcalledonpresidenttoallowexperimentsusing“surplus(多余的)”fiftyfrozenembryosinfertilityclinicsarguingthattheywouldbedisposedofanyway.ButObamadidn’tlimithisnewpolicytothesefertilizedeggs.

　　Onthecontraryheleftopenthepossibilityoffundingstudiesusingembryoscreatedspecificallysotheircellscanbeharvested.Hedidhoweverrejectanotheroption.“Wewillensure”hesaid“thatourgovernmentneveropenthedoortotheuseofcloningforhumanreproduction.Itisdangerousprofoundlywrongandhasnoplaceinoursocietyoranysociety.”

　　Butthispositionishardtosquarewithhisclaimedapproach.Ononehandthepresidentsayshispolicyis“aboutlettingscientistsdotheirjobsfreefrompressure”.Ontheotherhewillusepressuretokeepthemfromdoingreproductivecloning.

　　Whatthispolicymeansissimple:Itmaybepermissibleforscientiststocreateclonedembryosandkillthem.It’snotpermissibletocreateclonedembryosandletthemlive.Theircellsmaybeusedforourbenefitbutnotfortheirown.

　　It’sthepolicythatisriskynotjusttodays-oldhumanembryos.Therestofusaresuretoreceiveimportantmedicalbenefitsfromthisresearchoneday.Butwemaylosesomethingevenmoreimportantinamoralsense.

　　32.It’simpliedinthefourthparagraphthatpro-lifegroup________.

　　A.supporttheresearchonembryonicstemcel