阅读下面短文，从短文后各题所给的 A、B、C、D 四个选项中，选出最佳选项。

    I'm Kitty. I'm 121old. I have black2and black hair. I3from Liuzhou but I live4Laibin now. I have a sister.5name is Sandy. I like6sports and

    Sandy7dancing. I have8of good friends at school. Mary is my9friend. She is a good student. She wants to be a doctor when she10up.