A．Boys cry four times as often as girls.
B．Girls cry four times as often as boys.
C．Boys cry as often as girls.
D．Girls cry a quarter as often as boys.
A．Why humans cry.
B．How to relieve ourselves.
C．How animals cry.
D．When people cry.
A．To explain why Wright became an architect.
B．To describe the positive aspects of Wright's architecture.
C．To explain why Wright' s style of architecture became less popular.
D．To describe the materials Wight used in construction.