In langston hughes’s poem “i dream a world,” the repetition of the word “dream” emphasizes a.)the idea that the action of the poem takes place at night. b.)the notion that hughes lives in a fantasy world rather than reality. c.)the fact that equality is a desired but seemingly unattainable goal. d.)the belief that dreams often remain unrealized due to oppression.

One of the author’s purposes in the code book is to explain different types of codebreaking to his readers. which line best demonstrates this purpose? a theoretical breakthrough would be a fundamentally new way of finding alice's private key mathematicians have been studying factoring for centuries, and modern factoring techniques are not significantly better than ancient techniques a more recent development is the so-called tempest attack, which aims to detect the electromagnetic signals emitted . . in a computer's display unit if scientists could build a quantum computer, it would be able to perform calculations with . . enormous speed