We need fire because it helps us _. Fires die _.

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问题 We need fire because it helps us _________.
Fires die _________.

选项 A、WithoutWater
B、Without air
C、With oxygen

答案B

解析文章倒数第二段第三句：“Fires need oxygen．With out oxygen they die．”故本题答案为B。

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公共英语一级笔试

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