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A.(x+1)²+y²=1           B.x²+y²=1            C.x²+(y+1)²=1            D.x²+(y-1)²=1

A.(x+1)²+y²=1           B.x²+y²=1            C.x²+(y+1)²=1            D.x²+(y-1)²=1

A.(x+1)²+y²=1       B.x²+y²=1            C.x²+(y+1)²=1        D.x²+(y-1)²=1

A.(x+1)²+y²=1         B.x²+y²=1        C.x²+(y+1)²=1          D.x²+(y-1)²=1

A.(x+1)²+y²=1

B.x²+y²=1

C.x²+(y+1)²=1

D.x²+(y-1)²=1

A.(x+1)²+y²=1

B.x²+y²=1

C.x²+(y+1)²=1

D.x²+(y-1)²=1

A.(x+1)²+y²=1

B.x²+y²=1

C.x²+(y+1)²=1

D.x²+(y-1)²=1

已知圓C與圓(x-1)²+y²=1關(guān)于直線y=-x對稱，則圓C的方程(    )

A．(x+1)²+y²=1                            B．x²+y²=1

C．x²+(y+1)²=1                            D．x²+(y-1)²=1

已知圓C與圓(x-1)²+y²=1關(guān)于直線y=-x對稱，則圓C的方程(    )

A.(x+1)²+y²=1  B.x²+y²=1    C.x²+(y+1)²=1     D.x²+(y-1)²=1

已知圓C與圓(x-1)²+y²=1關(guān)于直線y=-x對稱，則圓C的方程(    )