Which of Cage's compositions was created by the tossing of coins to determine which sections are to be played?

Which of the following technological innovations did NOT contribute to the development of the first skyscrapers?

A. steel structural supports B. reinforced concrete C. the elevator D. the integration of heating, ventilation, plumbing and electrical systems

The Indus male Torso is typical of Indian art in its __________.

A. sensuous form B. emotional layers C. profuse ornament D. disguised symbolism