(2014•山西模拟)如图,点O在直线AB上,射线OC平分∠AOD,若∠AOC=35°,则∠BOD等于( )

A.145° B.110° C.70° D.35°
(2014•成都模拟)时钟在3点半时,分针与时针所夹的角的度数是( )
A.67.5° B.75° C.82.5° D.90°
(2014•黄冈)如果α与β互为余角,则( )
A.α+β=180° B.α﹣β=180° C.α﹣β=90° D.α+β=90°
(2014•济南)如图,点O在直线AB上,若∠1=40°,则∠2的度数是( )

A.50° B.60° C.140° D.150°
(2014•贺州)如图,OA⊥OB,若∠1=55°,则∠2的度数是( )

A.35° B.40° C.45° D.60°
(2014•滨州)如图,OB是∠AOC的角平分线,OD是∠COE的角平分线,如果∠AOB=40°,∠COE=60°,则∠BOD的度数为( )

A.50 B.60 C.65 D.70
