____ In the US, pink has been associated with girls since 1920s.
A. 对
B. 错
____ In ancient Rome, white was the most popular wedding color.
A. 对
B. 错
____ Both of the yellow and orange get noticed and can be used for safety.
A. 对
B. 错
___ Purple has always been considered the color of royalty because it cost too much.
A. 对
B. 错