在西葫芦的皮色遗传中，黄皮基因B对绿皮基因b为显性，但在另一白色显性基因E存在时，基因B和b都不能表达．现有基因型为BbEe的个体自交，其后代表现型种类及比例是（　　）

    A lot of people like sports. And some love 1 very much. An elephant can also 2basketball. There is an elephant. Its 3is Toktak. He 4 strong and cute. Many people like 5. Do you know 6? Because 7his free time, Toktak often plays basketball with his long trunk（象鼻）. He 8the sport very much. The basketball looks like a toy to Toktak. It is 9to watch Toktak playing basketball. Do you like the elephant? Let's 10him in the zoo. I think you can have fun there.

已知曲线$f\left(x\right)=\ln x$在点$\left(x_0,f\left(x_0\right)\right)$处的切线经过点$\left(0,-1\right)$，则$x_0$的值为(      )