Fire can help people in many ways. Fire can heat water,【C1】________your house, give light and cook food. But fire can burn thing

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问题     Fire can help people in many ways. Fire can heat water,【C1】________your house, give light and cook food. But fire can burn things too. Nobody knows【C2】________people began to use fire. One story from Australia tells about a man a very long time ago. He【C3】________the sun by a rope and brought fire down.
    Today people know how to【C4】________a fire with matches. Children sometimes like to play with them. But matches can be very【C5】________
    Fire kills people every year. So you must be careful【C6】________matches. You should also learn to【C7】________fires. Fires need oxygen (氧气).     Without oxygen they die. There is【C8】________in the air. Cover a fire with water, sand, or【C9】________, with your coat or a blanket. This keeps the air from a fire and kills it. Be careful with fire, and it will help you. Be careless with fire, and it might【C10】________ you.
【C3】

选项 A、watched
B、got up to
C、went up to
D、discovered

答案C

解析 考查动词辨析。watch意为“看”,got up to意为“赶上,追上”,went up to意为“靠近……”,discover意为“发现”。根据上下文语境可知,C选项符合语义,故选C。
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