（2016•毕节市）估计 $\sqrt{6}+1$ 的值在（　　）

A：Jane，I called you just now, but you didn't pick up．____?

B：I was reading a story called the fox and the crow(《狐狸和乌鸦》)．

A：____?

B：Oh ,it's very educational．

A：____?

B：Of course．One day, the crow got a piece of meat．The fox was very hungry and wanted to eat the meat．Then the fox said hello to the crow．But the crow didn't answer．

A：____ ?

B：Then the fox said the crow had a beautiful voice and asked the crow to sing a song．The crow was very proud(得意的)and wanted to sing．When it opened its mouth，the meat dropped and the fox got it．

A：The crow was really silly．

B：____．The fox wasn't telling the truth．The crow had a terrible singing voice．

已知双曲线C₁、C₂的顶点重合，C₁的方程为$\frac{x^2}{4}$-y²=1，若C₂的一条渐近线的斜率是C₁的一条渐近线的斜率的2倍，则C₂的方程为____ 。

一位西方学者评论秦始皇：“建立了绝对的专制制度，这一制度以个人亲信为基础，而不考虑世袭和教育。”从人类政治文明发展的角度，这一政治转向的积极意义主要在于（   ）