先通读短文，掌握其大意，然后从A、B、C、D四个选项中选出一个可以填入相应空白处的最佳答案。
This is my 1. How do you like it? I like it very much. It's always tidy. You can see a map of China and 2 pictures on the walls. My classmates and I draw（画）the pictures. We have a soccer in 3classroom, but you can't see it. It's under the 4 desk.
Our teachers are always very5. They do many things every day. We have our lessons 6 8:00 in the morning to 4:00 in the afternoon. 7, we like playing games. Soccer is my favorite. My classmates like to play 8 with me because I can play it very well. Then in the evening, we have two more classes. I like to be with my classmates. I 9 a good time with them every day.
10 about you? Do you like your classroom?
、
分别是双曲线
的左、右焦点，
是其右顶点，过
轴的垂线与双曲线的一个交点为
，
是
，则双曲线的离心率是（ ）