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1、大学英语六级仔细阅读练习题(1) Questions56to60arebasedonthefollowingpassage. 3Dglasseshelpdoctorsperforminvasivesurgerywhentheirhandsareobscuredfromview. Moviegoersaren'ttheonlyoneswearing3Dglassesnowadays—doctorscouldbenefitfromthem,too,anewstudysuggests. Int
2、hepast,doctorshavebeenskepticalofusing3Dtechnologyintheirwork,preferringtorelyontheirownexperience.Butthatmaychange,thankstoimproved3Dglassesandevenglasses-freesystems.Fundedbyindustrysponsors,thestudyof50surgeonsusingthenewtechnologyshowedimprovemen
3、tsinsurgicalprecisionandspeed. "Whilethetechnologystillrequiressomefree-tuning,technologywithouttheneedtowearspecialglasseswillincreasethepopularityof3Dsystemsinoperatingrooms,"studyleaderUlrichLeineroftheFratmhoferHeinrichHertzInstitute(HHI)inBerli
4、nsaidinastatement. Improvementstoscreensaredrivingdevelopmentsin3Dtechnology.High-definitionscreensarealreadyavailable.Thenextstepisultra-highdefinition,withasixteenfoldimprovementinresolution,accordingtostudyco-authorMichaelWitteofHHI. Toevaluatew
5、hethernew3Dtechnologywasreadyforhospitalapplications,researchersinvitedsurgeonsfromtheKlinikumrechtsderIsar'ssurgicalhospitaltotestitout.Aleadingendoscopemanufacturerandaninternationaldisplaycompanyfundedthestudy. Thesurgeonstestedfourdifferentsyste
6、ms:2D,3Dwithglasses,3Dwithoutglassesandamirror-based3Dsystem.Theglasses-freemodelreliedonaneye-trackingcamerasystemthatdeliveredseparateimagestoeacheye,creatinga3Deffectinthebrain. Theimagescamefromendoscopiccamerasusedinsurgery.Thedoctorspracticeda
7、simulated,routinesurgicalprocedureinwhichtheysewedupawoundinamodelpatient'sstomachusinganeedleandthread.Justasinaminimallyinvasivesurgery,theirhandswereobscuredfromviewandtheyrelied onthescreentoseewhattheyweredoing. "Theresultswereastonishing,"Hub
8、ertusFeuner,oftheKlinikumrechtsderIsaruniversityhospitalinMunich,saidinastatement.Thewinningsurgeonperformedtheprocedurein15percentlesstimeandwithconsiderablyincreasedprecision,Feunersaid. Themostsurprisingthingwasthatnotonlyyoungsurgeonsbenefited,b
