Gaokao Math Practice Question
已知双曲线 $\frac{x^{2}}{a^{2}}-\frac{y^{2}}{b^{2}}=1 \left(a>0 , b>0 \right)$ 的渐近线与抛物线 $y=x^{2}+1$ 相 切，则该双曲线的离心率为 （$\qquad$）
- A.$\sqrt{3}$
- B.2
- C.$\sqrt{5}$
- D.$\sqrt{6}$
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