Walt Whitman ’s（） is a collection of poems incorporating his emotions and feelings before and during the Civil War when he stood firmly on the side of the North.

Walt Whitman ’s（） is a collection of poems incorporating his emotions and feelings before and during the Civil War when he stood firmly on the side of the North.
A、Leaves of Grass
B、“Cavalry Crossing a Ford”
C、“Song of Myself”
D、Drum Taps
正确答案：D