A．He helped construct a chapel.
B．He took over his family' s business.
C．He trained under Guggenheim.
D．He worked on a project overseas.
A．They characterize stages in Wright' s career.
B．Wright died while they were being constructed.
C．They were Wright' s earliest buildings.
D．They are examples of Wright's classical styles.
A．Theories of how the universe evolved.
B．Similarities between the planets in the solar system.
C．Reason for the high density of earth.
D．Theories of the origin of the Moon.