题目

  Hello, everyone! My name is Betty. I’m thirteen years old. I’m in Class Two, Grade Seven. Today I want to tell you something about my school .     There are 2, 000 students in my school. ①我们有32个教室。In our school we have a big library. It’s behind our classrooms. There are many books in it. We can read them and learn(学习） a lot from them. The science labs（实验室） are next to the library. Behind the library and the science labs there is ②a dining hall. After school, we have our dinner there. After school, we can play table tennis, football and已知：如图，AB=AE，∠1=∠2，∠B=∠E．求证：BC=ED．