题目

Hello，I'm Michael.I am 13.I have two friends.They're Gary and Jason.Gary is 13，too.But Jason is 12.We are in the same class.I like basketball.And I like Yao Ming and Zhu Fangyu.I have a basketball.I play it after school.Gary and Jason don't like it.Gary likes soccer.He has two soccer balls.He always plays soccer after school in the afternoon.It's easy for Gary.Jason can play soccer，too.He plays it with Gary sometimes (有时)．He has a soccer ball and two volleyballs.He likes volleyball.He watches volleyball games on TV，too.All (所有的) of us can play ping­pong.And all of us have 下列说法中正确的是 [　　] A．长度相等的弧是等弧B．半圆不是弧 C．直径是弦D．过圆心的线段是直径