Professor Thring’s mechanical coal miner ______. Why does Professor Thring think that the unions should be pleased about the me

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问题 Professor Thring’s mechanical coal miner ______.
Why does Professor Thring think that the unions should be pleased about the mechanical coal miner?

选项 A、Because a lot more miners will be needed.
B、Because miners will earn over 10,000 a year.
C、Because miners will not have to work underground any more.
D、Because it will reduce the risk of explosions.

答案C

解析 这是一个细节题,在文中第四段可直接找到答案。
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