What is the underlined idiom
The author used fragments, and long sentences with a variety of length and beginnings. He used such methods to create sentence fluency and rhythm in the passage through making the reader pause or 'rest' in between sentences - making emphasis on some lines and deeming it nice to listen to.
Answer:
homework sorry if im not right
This is a simile as it compares two things using the word like. It compares her running across the grass to a cheetah chasing its prey, implying she is running very fast