In 1900 the United States ranked first in the world in the production of______.A.coalB.el

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In 1900, the United States ranked first in the world in the production of______.

A.coal

B.electricity

C.oil

D.wheat

请帮忙给出正确答案和分析,谢谢!

热搜:在公制与英制换算中,1in等于()。