问题详情

What is the real reason for the increase in the number of married women employed in the 20th century？
A．There were not enough single women workers available.
B．Married women had more free time.
C．The mechanization of housework made them feel that jobs outside were very easy.
D．They were tired of doing the same housework every day.此题为多项选择题。请帮忙给出正确答案和分析，谢谢！