7) Read the passage from “The Caged Bird.” But a bird that stalks

down his narrow cage

can seldom see through

his bars of rage

his wings are clipped and

his feet are tied

so he opens his throat to sing.

What is the literal meaning of stalks?

the stem or main axis of a plant

the slender supporting part of anything

to pursue or approach prey stealthily

to walk with measured, stiff strides

(1) fire extended humans’ geographical boundaries by allowing them to travel into regions that were previously too cold to explore. (2) it also kept predators away, allowing early humans to sleep securely. (3) fire, in fact, has been a significant factor in human development and progress in many ways. (4) other obvious benefits of fire are its uses in cooking and in hunting. (5) probably even more important, however, is that learning to control fire allowed people to change the very rhythm of their lives. (6) before fire, the human daily cycle coincided with the rising and setting of the sun. (7) with fire, though, humans gained time to think and talk about the day’s events and to prepare strategies for coping with tomorrow. the sentence that expresses the main idea is: (type the number of the sentence. then click “go.”)