问题：
[不定项选择题] There is substantial evidence that by 1926, with the publication of The Weary Blues, Langston Hughes had broken with two well-established traditions in African American literature. In The Weary Blues,
A、evidence of his use of oral techniques in his poetry
B、evidence of his thoughtful deliberation in composing his poems
C、his scrupulous concern for representative details in his poetry
D、his incorporation of Western European literary techniques in his poetry
参考答案：
B、evidence of his thoughtful deliberation in composing his poems
● 参考解析
