抛物线 $y=x^{2}$ 的焦点坐标是
$:$ 抛物线 $\mathrm{y}=\mathrm{x}^{2}$, 即 $\mathrm{x}^{2}=\mathrm{y}, 	herefore \mathrm{p}=rac{1}{2}, 	herefore rac{\mathrm{p}}{2}=rac{1}{4}, 	herefore$ 焦点坐标是 $\left(0, rac{1}{4}
ight)$. 故选: D.