题目

阅读理解 Hello! My name isBob. I am 13. I am in Classroom 7E. My telephone number is 658-5236. Who isthat girl? Oh, she is my friend Mary. She's 12. She is in Classroom 7E, too.Her telephone number is 864 -5213. Here are our school things. Things Bob Mary book nine five pencil eight seven pen five three eraser seven nine （1） Bob's telephone number is ________. A . 568-5236 B . 658-5236 C . 864-5213 D . 684-5213 （2） Mary is Bob's _________. A . teacher B . mom C . sister D . 一个扇形的圆心角为120°，半径为1，则这个扇形的弧长为    ．