Early fires were not caused by ______. [br] According to the passage, we can inf

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问题 Early fires were not caused by ______. [br] According to the passage, we can infer that ______.

选项 A、early fires were made by man
B、man did not fear the fire at first
C、man discovered iron much later than bronze
D、fire is still the master of man

答案 C

解析从最后一段可以得知，因为从铁矿石里炼出铁很不容易，所以人类先发现了青铜。

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