ComputErs hAvE mAny usEs toDAy.ComputErs CAn solvE DiFFiCult{{u}} (56) {{/u}}AnD Control ComplEx mAChinEs. mAny pEoplE usE smAll ComputErs{{u}} (57) {{/u}}CAlCulAtors to ADD, suBtrACt, multiply, AnD DiviDE{{u}} (58) {{/u}}quiCkly. sCiEntists usE lArgE ComputErs to solvE mAny proBlEms At thE sAmE{{u}} (59) {{/u}}. you CAn plAy{{u}} (60) {{/u}}with ComputErs, AnD somE ComputErs CAn hElp you{{u}} (61) {{/u}}lAnguAgEs. thE kurzwEil rEADing mAChinE is A spECiAl{{u}} (62) {{/u}}oF ComputEr. it CAn rEAD Books For BlinD pEoplE thE kurzwEil mAChinE Consists{{u}} (63) {{/u}}thrEE pArts: A sCAnnEr, A ComputEr, AnD A voiCE synthEsizEr (合成器). thEsE{{u}} (64) {{/u}}pArts ArE likE your EyEs, your BrAin,{{u}} (65) {{/u}}your voiCE. thE sCAnnEr is{{u}} (66) {{/u}}"EyE" oF thE mAChinE. it sCAns or looks At thE worDs on thE pAgE oF A Book AnD{{u}} (67) {{/u}}thEm into DigitAl signAls. thEsE DigitAl signAls thEn{{u}} (68) {{/u}}to thE ComputEr, thE "BrAin" oF thE mAChinE. thE ComputEr AnAlyzEs thE (69) AnD rECognizEs thE worDs. thE ComputEr{{u}} (70) {{/u}}inFormAtion ABout thE worDs to thE voiCE synthEsizEr. thE voiCE synthEsizEr mAkEs thE sounDs oF thE worDs. to usE thE mAChinE, A BlinD pErson simply{{u}} (71) {{/u}}thE Book AnD puts its FACE Down on thE sCAnnEr (likE A photoCopy mAChinE). thE mAChinE "rEADs" thE worDs on thE pAgE. whEn onE{{u}} (72) {{/u}}is FinishED, thE BlinD pErson turns thE pAgE AnD puts thE Book on thE sCAnnEr{{u}} (73) {{/u}}. thE kurzwEil mAChinE CAn rEAD{{u}} (74) {{/u}}A normAl voiCE or in A spECiAl FAst voiCE. it CAn rEAD worDs{{u}} (75) {{/u}}smAll lEttErs, lArgE lEttErs, or itAliCs.

A．in
B．with
C．By
D．At