18. Which of the Flavian Amphitheater’s (Figs. 6-37 and 6-38) architectural elements serves no
structural purpose?
A. the entablature of the outer wall
B. the arcade of the outer wall
C. the interior groin vaults
D. the barrel-vaulted corridors
19. The biggest problem with concrete is
A. it is expensive and difficult to manipulate.
B. it requires highly skilled workers.
C. it deteriorates when exposed to moisture.
D. it is difficult to transport.
20. In comparison to Greek women, Roman women were
A. treated like slaves.
B. involved in rituals.
C. not allowed to own property.
D. socially far freer.