The development of structural steel and the ________ were essential to the development of the modern skyscraper

A. electric elevator
B. pre-cut glass panes
C. ancient techniques of concrete
D. cable car

Answer: A

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A melodic and/or rhythmic pattern that is repeated many times is a(n)

A. portato. B. ostinato. C. animato. D. obligato.

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A melody is sometimes referred to as a

A. pitch. B. tune. C. motive. D. cadence.

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