Use the word derogatory in a setence

What is the effect of ruckeyser’s repetition of the word “devices” in the first and third lines of “poem”? it suggests that the poem is set at an earlier time. it to create a mechanical, robotic tone in the poem. it emphasizes the speaker’s feeling of detachment toward the war. it creates a metaphor comparing humanity to manufactured objects.

By comparing part 1 and 2 of polar opposites what does it mean by polar opposites

What is wrong with they follow citation of a book with two authors