题海让大学四年没有难题
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单选题 As the American Industrial Revolution advanced, metallurgists(冶金学家) would develop alloys making steel (another 19th-century innovation) even stronger, allowing for the construction of the first skyscraper in 1885 in

A. New York

B. Chicago

C. Pittsburgh

D. Newark

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时间:2025-12-08 10:56:07

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