Barack Obama, African America, was elected as 56th President o

题干

Barack Obama, African America, was elected as 56^th President of the United states.

A．/，the

B．/， /

C．an ， the

D．an ， /

上一题下一题 0.64难度单项选择更新时间:2011-08-11 09:10:04

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