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徐阳:
Where did you go this morning? 
今天上午你去哪里了？
青青:
I went to the library and read some interesting stories of your family name.
我去了图纸馆， 看到一些关于你的姓的有趣的故事。
徐阳:
My family name? You mean Xu ?
我的姓 ？你说姓 徐 ？
青青:
Yes. Do you know who is the oldest famous Xu in the history?
对， 你知道历史上最长寿的徐姓名人是谁吗 ？
徐阳:
I am not sure. Is he Xu Guangqi , the scientist in Ming dynasty who was 71years old?
我不确定。 是71岁的明朝科学家徐光启吗？
青青:
No. The oldest famous Xu is Xu Teli(1877—1968) , the proletariat revolutionary ,educationalist of our country.
不对。 最长寿的徐姓名人是徐特立 (1877-1968)，我国无产阶级革命家、教育家。