The answer is:
- repetition
- alliteration
- assonance
In the pasage from "Theme for English B," the author Langston Hughes makes use of repetition when he reproduces the words and, hear, me, and you several times.
He also uses alliteration, which is the evident repetition of identical consonant sounds in nearby syllables. For example, true and twenty-two, as well as hear and Harlem.
Finally, Hughes also employs assonance, which is the resemblance in vowel sounds among syllables and words. For instance, true, two, you and too; and feel, see and we.