Which one is an example of an idiom ?

How does the poem’s mood and tone change in each of these stages? odes and elgies

What is the narrator's main conflict in this passage? a. he doesn't like someone mispronouncing his name. b. he has a history of beating up kids he doesn't like. c. he has a violent temper that he cannot control. d. he doesn't like "the kid" he mentions in the paragraph.

Today’s readers have more scientific knowledge than readers of previous eras what effect does that have on their reading of science fiction stories