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小明想要绘制如图所示的图形，已知指令如下，大圆的半径为70，小圆的半径为50，请问横线处需要补充的指令依次是？（ ）
import turtle turtle.fillcolor(____) turtle.begin_fill() turtle.circle(____) turtle.end_fill() turtle.fillcolor(____) turtle.begin_fill() turtle.circle(____) turtle.end_fill() turtle.done()
"red",70,"blue",50
"blue",70,"red",50
"red",50,"blue",70
"blue",50,"red",70
