At college, Barack Obama didn't know that he will be the first black president of the United States of America.

大学时期的巴拉克·奥巴马不知道自己将是美利坚合众国第一位黑人总统。

youdao

At college, Barack Obama didn't know that he was to become the first black president of the United States of America.

上大学时，巴拉克·奥巴马并不知道他将成为美利坚合众国的第一位黑人总统。

youdao

At college, Barack Obama didn't know that he would be the first black president of the United States of America.

大学时，巴拉克·奥巴马并不知道他会成为美国第一位黑人总统。

youdao

He will be inaugurated as the 44th president of the United States, and the first black president, on January 20th.

VOA: special.2009.01.12

He was also South Africa's first black president.

VOA: special.2011.06.24

Martin Henry Freeman, the first black college president in the United States, was born in Rutland,Vermont.

VOA: special.2010.10.25

America's first black president secured more than the 270 votes in the electoral college needed to win.

BBC: President Barack Obama defeats Romney to win re-election

Mandela endured 27 years in prison before becoming the country's first black president in 1994.

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Will a black president from a big city face new opportunities or new obstacles?

NPR: Changing Perspectives On Race, Politics In York, Pa.