31.Howmanyaspectsdoesthewritermentiontoincreasetheworkforce?

A.2B.3.C.4.D.5.
D

IntheJamesBondmovieSkyfall,thereisafrighteningmomentwhenthebad guyofthefilmremoveshisprosthetic(假体)mouthtoshowhisdamagedface.We arescared,butamazedatthepossibility.Coulditbepossibletoreplaceparts ofourbodyandevenimproveontheoriginal?Rex,theBionic(仿生)Man,brings togetherscientistsworkingonthelatestresearchtotestthelimitsof prosthetictechnology.

BuiltbyleadingUKroboticistsRichardWalkerandMatthewGoddenfromShadow Robot,RexiscurrentlyondisplayatLondon’sScienceMuseum.Thetwo-metretall artificialmanhas28ofthelatestartificiallimbsandorgansandcostalmost $1milliontomake.Walkerdescribeshowtheirworkbeganabouttwoyearsago whentheproductioncompanygotintouchwithhim.Histeamhopedtoobtainthe verylatestprostheticsandbuildahumanfromit.AsWalkersays,“seeifit standsupandwalks!”Theirobjectivewastoshowpeoplethelatestartificial bodyparts,allofwhichcanbeusedintherealworld.Rexwasbornaftertwoand ahalfmonthsoflatenightsandlotsofpizza.Thentherearethemore conventional(常规)prosthetiesliketheartificialhand,whichusessignalsfrom nervesinthehumanbodyforpickingupholdingthings.