A. STRENGTH B. PRESSURE C. POWER D. ROARREAD THE PASSAGE AND CHOOS...

27. A. strength B. pressure C. power D. roarRead the passage and choose the best answer.Man discovered fire many thousands years ago. The first time he saw fire was probably when a treewas struck by lightning. He soon learned how to make fire for himself. However man probably madehis fire by rubbing two sticks together.Fire was very important to man. He needed fire to keep himself warm at night. He used fire to cookhis food. He used fire to frighten away enemies and wild animals. In some parts of the world he usedfire to signal messages. Red Indians, for example, used fire to make smoke signals. In some othercountries people lit fires to warn their friends of danger.Fire was very also used to give light. Beforethe invention of oil lamp, men used burning sticks as torches. And before man discovered gas andelectricity, he hung small fires in wire baskets from posts to light the streets.One man even used fire to tell the time. He invented a candle clock. He made a candle that tookexactly twelve hours to burn. Then he marked this candle in twelve equal parts. He lit the candle andcould tell the time by counting the number of parts left of the burning candle. But the candle clockdid not always work well. If there was a wind blowing on the candle, the flame burned too quickly.