What does the professor mainly discuss?A.The development of the modern skyscraper.B.The sk
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What does the professor mainly discuss?
A.The development of the modern skyscraper.
B.The skyscraper"s effect on urban areas.
C.Problems with future skyscraper construction.
D.Safety regulations for skyscraper design.
请帮忙给出正确答案和分析,谢谢!
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