Walt Whitman was a pioneering fi

Walt Whitman was a pioneering figure of American poetry. His innovation lies in his use of______, poetry without a fixed beat or a regular rhyme scheme.
A、blank verse
B、heroic couplet
C、free verse
D、limbic pentameter
【正确答案】：C
【题目解析】：沃尔特·惠特曼是美国诗歌的先驱。他的创新之处在于他对自由诗的运用，即没有固定节拍和韵律的诗歌。