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A:Nice to meet you , too!
B:How do you do?
C:Hello!
D:Good morning!
如图,在平面直角坐标系中,点B在y轴上,第一象限内点A满足AB=AO,反比例函数y=kx的图象经过点A,若△ABO的面积为2,则k的值为( )