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When the world was very young, people lived only in hot places. They did not live in cold places because they
could not keep warm there.
At first men did not know how to make a fire. Sometimes trees were hit by lightning. Then a fire was started.
People took some of the fire near their homes. A fire was very important for three reasons. It kept them warm.
Wild (野蛮的) animals were frightened when they saw it. And when food was cooked, it tasted much better.
But men did not know how to make a fire. When they had a fire, they did not let it stop burning. If it went out
(熄灭), they could not start it again. They had to wait for lightning to start another fire. Sometimes they had to
wait for years.
Later, they learned how to make a fire. But it was not easy to make something burn.
Now we have matches. We can carry them in our pockets and make a fire when we want to.
1. People found that ________. [ ]
A. the cooked food tasted better than the uncooked food
B. the uncooked food tasted much better than the cooked food
C. wild animals enjoyed the cooked food
D. wild animals kept warm near the trees
2. People didn't let a fire stop burning because ________. [ ]
A. they were not able to make a fire
B. they liked to wait for lightning
C. they were very lazy
D. they didn't like to make a fire
3. Now we can make a fire ________. [ ]
A. by lightning
B. if it is necessary
C. for three reasons
D. in our pockets
