A:②③④
B:①②③
C:②④⑤
D:③④⑤
已知集合A={2,4,6,8},集合B={1,4,5,6},则A∩B等于( )
(2015•青岛)用圆规、直尺作图,不写作法,但要保留作图痕迹.
已知:线段c,直线l及l外一点A.
求作:Rt△ABC,使直角边为AC(AC⊥l,垂足为C),斜边AB=c.
what ,be ,an ,last, some ,the, in ,your ,black ,my ,call, how
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