问题
选择题
Obama, _____ president of the USA, won _____ Nobel Prize for Pease in 2009.
A．\; a
B．a; the
C．\; the
D．the; a
答案
答案：C
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Obama, _____ president of the USA, won _____ Nobel Prize for Pease in 2009.
A．\; a
B．a; the
C．\; the
D．the; a
答案：C