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1、精品文档_卫生类-相同项单选集1、Theideaoftest-tubebabiesmaymakeyoustarry-eyedwithdelightatthewondersofmodernmedicineorbleary-eyedwithconsideringthemoral/legalimplicationsofstartinglifeinalaboratory.Butifyouveeverbeenpregnant(怀孕的)yourself,onethingiscertain:Youwonderwhatitsliketocarryatest-tubebaby.Arethesepregnanci
2、esnormalArethebabiesnormalTheearliestanswerscomefromAustralia,whereagroupofmedicalexpertsattheQueenVictoriaMedicalCenterinMelbournehavetakenalookatthecontinentsfirstninesuccessfultest-tubepregnancies.TheAustraliansreportthatthepregnanciesthemselvesseemedtoproceedaccordingtoplan,butatbirthsomeunusual
3、trendsdidshowup.Sevenoftheninebabiesturnedouttobegirls.SixofthenineweredeliveredbyCaesareansection(剖腹产术).Andonebaby,atwin,wasbornwithaseriousheartdefectandafewdayslaterdevelopedlife-threateningabdominal(腹剖的)problems.WhatdoesitallmeanEventhedoctorsdontknowforsure,becausethenumbersaresosmall.Thepropor
4、tionofgirlstoboysishigh,butuntiltherearemanymoretest-tubebabies,noonewillknowwhetherthatspurecoincidence(巧合)orsomethingspecial.Thesamethingistrueofthesingleheartdefect;itusuallyshowsupinonly15outof60,000birthsinthatpartofAustralia,butthefactthatitoccurredinoneoutofninetest-tubebabiesdoesnotnecessari
5、lymeanthattheyareatspecialrisk.OnethingthedoctorscanexplainisthehighnumberofCaesareans.TheAustralianresearchersreportthattheyarequiteencouraged.Allthebabiesarenowmakingnormalprogress-eventhetwinwiththebirthdefects.Doctorsaresurethatmoretest-tubebabiesaregirlsthanboys.（）A.RightB.WrongC.Notmentioned2、
6、Theideaoftest-tubebabiesmaymakeyoustarry-eyedwithdelightatthewondersofmodernmedicineorbleary-eyedwithconsideringthemoral/legalimplicationsofstartinglifeinalaboratory.Butifyouveeverbeenpregnant(怀孕的)yourself,onethingiscertain:Youwonderwhatitsliketocarryatest-tubebaby.ArethesepregnanciesnormalArethebab
7、iesnormalTheearliestanswerscomefromAustralia,whereagroupofmedicalexpertsattheQueenVictoriaMedicalCenterinMelbournehavetakenalookatthecontinentsfirstninesuccessfultest-tubepregnancies.TheAustraliansreportthatthepregnanciesthemselvesseemedtoproceedaccordingtoplan,butatbirthsomeunusualtrendsdidshowup.S
8、evenoftheninebabiesturnedouttobegirls.SixofthenineweredeliveredbyCaesareansection(剖腹产术).Andonebaby,atwin,wasbornwithaseriousheartdefectandafewdayslaterdevelopedlife-threateningabdominal(腹剖的)problems.WhatdoesitallmeanEventhedoctorsdontknowforsure,becausethenumbersaresosmall.Theproportionofgirlstoboys
9、ishigh,butuntiltherearemanymoretest-tubebabies,noonewillknowwhetherthatspurecoincidence(巧合)orsomethingspecial.Thesamethingistrueofthesingleheartdefect;itusuallyshowsupinonly15outof60,000birthsinthatpartofAustralia,butthefactthatitoccurredinoneoutofninetest-tubebabiesdoesnotnecessarilymeanthattheyare
10、atspecialrisk.OnethingthedoctorscanexplainisthehighnumberofCaesareans.TheAustralianresearchersreportthattheyarequiteencouraged.Allthebabiesarenowmakingnormalprogress-eventhetwinwiththebirthdefects.Test-tubebabieswithheartdefectwilldie.（）A.RightB.WrongC.Notmentioned3、Theideaoftest-tubebabiesmaymakeyo
11、ustarry-eyedwithdelightatthewondersofmodernmedicineorbleary-eyedwithconsideringthemoral/legalimplicationsofstartinglifeinalaboratory.Butifyouveeverbeenpregnant(怀孕的)yourself,onethingiscertain:Youwonderwhatitsliketocarryatest-tubebaby.ArethesepregnanciesnormalArethebabiesnormalTheearliestanswerscomefr
12、omAustralia,whereagroupofmedicalexpertsattheQueenVictoriaMedicalCenterinMelbournehavetakenalookatthecontinentsfirstninesuccessfultest-tubepregnancies.TheAustraliansreportthatthepregnanciesthemselvesseemedtoproceedaccordingtoplan,butatbirthsomeunusualtrendsdidshowup.Sevenoftheninebabiesturnedouttobeg
13、irls.SixofthenineweredeliveredbyCaesareansection(剖腹产术).Andonebaby,atwin,wasbornwithaseriousheartdefectandafewdayslaterdevelopedlife-threateningabdominal(腹剖的)problems.WhatdoesitallmeanEventhedoctorsdontknowforsure,becausethenumbersaresosmall.Theproportionofgirlstoboysishigh,butuntiltherearemanymorete
14、st-tubebabies,noonewillknowwhetherthatspurecoincidence(巧合)orsomethingspecial.Thesamethingistrueofthesingleheartdefect;itusuallyshowsupinonly15outof60,000birthsinthatpartofAustralia,butthefactthatitoccurredinoneoutofninetest-tubebabiesdoesnotnecessarilymeanthattheyareatspecialrisk.Onethingthedoctorsc
15、anexplainisthehighnumberofCaesareans.TheAustralianresearchersreportthattheyarequiteencouraged.Allthebabiesarenowmakingnormalprogress-eventhetwinwiththebirthdefects.Itcostmuchtohaveatest-tubebaby.（）A.RightB.WrongC.Notmentioned4、Theideaoftest-tubebabiesmaymakeyoustarry-eyedwithdelightatthewondersofmodernmedicineorbleary-eyedwithconsideringthemoral/legalimplicationsofstartinglifeinalaboratory.Butifyouveeverbeenpregnant(怀孕的)yourself,onethingiscertain:Youwonderwhatitsliketocarryatest-tubebaby.ArethesepregnanciesnormalArethebabiesnormal
