资料来源：《英语畅谈世界文化》
450)=450">

450)=450">

每天一分钟，我们一起玩转世界文化。山姆叔叔已经成为了美国的代名词，第一次世界大战中曾出现过“山姆大叔”号召美国青年当兵的宣传画，流传很广。 1961年，美国国会正式承认“山姆大叔”为美国的民族象征。
童鞋们注意引号不写，是英式拼写哦~~
450)=450">
Hints：
U.S.
Uncle Sam
First World War
Hollywood
American Congress
Oh, because the army supply boxes also had U.S. printed on them. So he could have been a real person after all. One story must be true, but I'm not sure which. Do you know what was the most well-known poster of Uncle Sam? I think it was from the First World War. They used Uncle Sam, pointing a finger at the American people saying "We want you!" to encourage men to sign up and become soldiers. And a very effective advertising campaign it was too. Many young men signed up to fight for their country because of that poster. I think that poster is perhaps the most famous American poster ever. Even more than the Hollywood movie posters you see outside cinemas. I think you're right. In 1961 the American Congress adopted Uncle Sam as the national symbol. So nowadays Uncle Sam isn't just about war, like in the poster, he's the true symbol of the American people. I think it's special to have a cartoon as a national symbol, very different.