Read the passage. from hard times by charles dickens “quadruped. graminivorous. forty teeth, namely twenty-four grinders, four eye-teeth, and twelve incisive. sheds coat in the spring; in marshy countries, sheds hoofs, too. hoofs hard, but requiring to be shod with iron. age known by marks in mouth.” thus (and much more) bitzer. “now girl number twenty,” said mr. gradgrind. “you know what a horse is.” charles dickens’s purpose in this passage is to mock the facts-only method of teaching convey mr. gradgrind’s need to be right show that students are taught complex information prove that bitzer is highly intelligent

(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.”)