题目

      —Why are you crying? Today is your birthday! —____________. I am so excited with so many friends surrounding me.      A. Just can’t help it                                                 B. Don’t mention it C. None of your business                                  D. That’s all right 答案：A如下所示的4组图形中，左边图形与右边图形成中心对称的有（ ）A．1组B．2组C．3组D．4组