Walt Whitman believed, by means of “( ),” he has turned poetry

Walt Whitman believed, by means of “( ),” he has turned poetry into an open field, an area of vital possibility where the reader can allow his own imagination to play.
A、free verse
B、strict verse
C、regular rhyming
D、standardized rhyming
【正确答案】：A
【题目解析】：惠特曼认为，通过自由诗的方式，他已经把诗变成一个开放的领域，一个充满无限可能性的领域，一个读者可以发挥自己的想象力的领域。