A. BECOME B. TURN C. DEVELOP D. GROWQUESTION VII

10. A. become B. turn C. develop D. growQuestion VII: Read the passage and choose the best answer (10p): Man discovered fire many thousands years ago . The first time he saw fire was probably when a tree was struck by lightning . He soon learned how to make fire for himself . However man probably made his 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 cook his food . He used fire to frighten away enemies and wild animals . In some parts of the world he used fire to signal messages. Red Indians, for example , used fire to make smoke signals . In some other countries people lit fires to warn their friends of danger. Fire was very also used to give light . Before the invention of oil lamp, men used burning sticks as torches . And before man discovered gas and electricity , 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 took exactly twelve hours to burn . Then he marked this candle in twelve equal parts . He lit the candle and could tell the time by counting the number of parts left of the burning candle . But the candle clock did not always work well . If there was a wind blowing on the candle , the flame burned too quickly .