What do you think about fire? Fire is good servant【B1】a bad master. This is an old English【B2】. Once upon a time, people didn’t

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问题 What do you think about fire?
Fire is good servant【B1】a bad master. This is an old English【B2】.
Once upon a time, people didn’t know【B3】.【B4】, they learnt how to make it. They also learnt how to【B5】it. They used it to keep them warm. They also learnt how to cook food with it. Fire was their【B6】.
But sometimes a building catches fire. Sometimes the building is destroyed and people lose their homes. Sometimes people even【B7】. Fire is not a servant then. It became a master.
Why do fires begin?【B8】starts then.’? There are many reasons for tires. Perhaps an electric heater is placed how to do. They know how to put out the fire. They also know how to save people【B9】. They save the people while they put Out the fire. They have long ladders to roach high windows. They help the people in the room【B10】. If some people are hurt, they are taken to hospital in ambulance.

选项 A、and
B、but
C、or

答案B

解析 Fire is good servant but a bad master。火既是好仆人,又是坏主人。意思有转折因此选[B]。
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