问题描述：
1.What is the common world in English?
2.What is the common family name in the US?
3.What is the longest river in the world?
4.Who was the first man in space?
5.What language has the most native speakers?
6.What is the largest islang in the world?
2.What is the common family name in the US?
3.What is the longest river in the world?
4.Who was the first man in space?
5.What language has the most native speakers?
6.What is the largest islang in the world?
问题解答：
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