不等式$\frac{1}{x-1}<1$的解集记为P，关于x的不等式$x^2+\left(a-1\right)x-a>0$的解集记为q，若p是q的充分不必要条件，则实数a的取值范围是（　　）

在△ABC中，AB=9,AC=12,BC=15,则△ABC的中线AD=____ .

Mike: Look! It's a monkey.I like it.

Chen Jie: Look! It's a panda. I like it.

John: Look! It's a bear. I like it.

Sarah: Look! It's an elephant. I like it.

Wu Yifan: Look! It's a duck. I like it.

⑴ ____                         A.

⑵ ____                               B.

⑶ ____                         C.

⑷ ____                             D.

⑸ ____                             E.