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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. Inthepast,doctorshavebeenskeptica
2、lofusing3Dtechnologyintheirwork,preferringtorelyontheirownexperience.Butthatmaychange,thankstoimproved3Dglassesandevenglasses-freesystems.Fundedbyindustrysponsors,thestudyof50surgeonsusingthenewtechnologyshowedimprovementsinsurgicalprecisionandspeed. "Whilethetechnologystillrequ
3、iressomefree-tuning,technologywithouttheneedtowearspecialglasseswillincreasethepopularityof3Dsystemsinoperatingrooms,"studyleaderUlrichLeineroftheFratmhoferHeinrichHertzInstitute(HHI)inBerlinsaidinastatement. Improvementstoscreensaredrivingdevelopmentsin3Dtechnology.High-definit
4、ionscreensarealreadyavailable.Thenextstepisultra-highdefinition,withasixteenfoldimprovementinresolution,accordingtostudyco-authorMichaelWitteofHHI. Toevaluatewhethernew3Dtechnologywasreadyforhospitalapplications,researchersinvitedsurgeonsfromtheKlinikumrechtsderIsar'ssurgicalhos
5、pitaltotestitout.Aleadingendoscopemanufacturerandaninternationaldisplaycompanyfundedthestudy. Thesurgeonstestedfourdifferentsystems:2D,3Dwithglasses,3Dwithoutglassesandamirror-based3Dsystem.Theglasses-freemodelreliedonaneye-trackingcamerasystemthatdeliveredseparateimagestoeachey
6、e,creatinga3Deffectinthebrain. Theimagescamefromendoscopiccamerasusedinsurgery.Thedoctorspracticedasimulated,routinesurgicalprocedureinwhichtheysewedupawoundinamodelpatient'sstomachusinganeedleandthread.Justasinaminimallyinvasivesurgery,theirhandswereobscuredfromviewandtheyrelie
7、d onthescreentoseewhattheyweredoing. "Theresultswereastonishing,"HubertusFeuner,oftheKlinikumrechtsderIsaruniversityhospitalinMunich,saidinastatement.Thewinningsurgeonperformedtheprocedurein15percentlesstimeandwithconsiderablyincreasedprecision,Feunersaid. Themostsurprisingthi
8、ngwasthatnotonlyyoungsurgeonsbenefited,b
