问答题 4.  During the 1920s, people in U.S. cities increasingly moved to the suburbs because of the freedom provided to the workers by automobile ownership.
【正确答案】在20世纪20年代，由于拥有汽车给工人们所带来的自由，愈来愈多的美国的城市居民搬往郊区居住。
【答案解析】