【英语阅读理解,求答案和分析,高手进FirstSelf-containedHeartImplantedApatientonthebrinkofdeathhasreceivedtheworld’sfirstself-containedartificialheart—abattery-powereddeviceaboutthesizeofasoftballthatrunswithou】

　　英语阅读理解,求答案和分析,高手进

　　FirstSelf-containedHeartImplanted

　　Apatientonthebrinkofdeathhasreceivedtheworld’sfirstself-containedartificialheart—abattery-powereddeviceaboutthesizeofasoftballthatrunswithouttheneedforwires,tubesorhosesstickingoutofthechest.

　　TwosurgeonsfromtheUniversityofLouisvilleimplantedthetitaniumandplasticpumpduringasever-houroperationatJewishHospitalMonday.Thehospitalsaidthepatientwas“awakeandresponsive”Tuesdayandrestingcomfortably.Itrefusedtoreleasepersonaldetails.

　　Thepatienthadbeenexpectedtodiewithinamonthwithouttheoperation,anddoctorssaidtheyexpectedtheartificialhearttoextendtheperson’slifebyonlyamonth.Butthedeviceisconsideredamajorsteptowardimprovingthepatient’squalityoflife.

　　Thenewpump,calledAbioCor,isalsoatechnologicalleapfromthemechanicalheartsusedinthe1980s,whichwereattachedbywiresandtubestobulkymachineryoutsidethebody.Themostfamousofthose,theJarvic-7,usedairasapumpingdeviceandwasattachedtoanapparatusaboutthesizeofawashingmachine.

　　“Ithinkit’spotentiallyamajorstepforwardintheartificialheartdevelopment,”saidDr.DavidFaxon,presidentoftheAmericanheartAssociation.However,hesaidthedreamofanimplantable,permanentartificialheartisnotyetareality:“Thisisobviouslyanexperimentaldevicewhoselong-termsuccesshastobedemonstrated.”Onlyabouthalfofthe4,200Americansonawaitinglistfordonorheartsreceivedthemlastyear,andmostoftherestdied.

　　Somedoctors,includingRobertHiggins,chairmanofcardiologyattheMedicalCollegeofVirginiainRichmond,saidartificialheartsareunlikelytoreplacedonorhears.

　　“Adonorheartinagoodtransplantcanlast15to30years,”hesaid.“It’sgoingtobehardtoreplacethatwithamachine.”

　　TheAbilCorhasa2-poundpumpingunit,andelectroniccontrolsthatadjustthepumpingspeedbasedonthebody’sneeds.Itispoweredbyasmallbatterypackwornoutsidethebodythattransmitscurrentthroughtheskin.

　　36.前两段告诉Self-containedartificialheart

　　A.wasmadeoftitaniumandpump

　　B.hadbroughtthepatienttothebrinkofdeat