依据下侧图片内容并结合所学知识推断，这是孙中山先生缅怀下列哪一位人物的题词（  ）

    My name is Cheng Ao．I____from Shanghai，a big city in China．I'm thirteen____old and I'm in Class 2．Miss Liang's class．Miss Liang is my____teacher．

    I have a small family：my parents____I．My father is a Chinese teacher in a big school．My mother is a hotel manager．They like to play basketball with me____Saturday．

家住北京的小强，暑期准备 乘火车去上海旅游，他应选择哪条铁路线最合理(   )

复数 ${\left(\frac{1-\sqrt{3}i}{1+i}\right)}^2$(    )