[听力原文]11-15Family roles are changing. In Grandmother’s day, a woman was a mother, a wife, a cook, a laundress, a nurse, and a teacher. These jobs were all part of her socially designated role, and she usually stayed home all day. Grandmother worked only for her family. Grandfather was the money earner in the family. Boys were expected to grow up and get jobs outside the home. Girls were expected to enter into marriage and motherhood.Some families have kept this traditional pattern: Father works and Mother stays home. In other families, there are other patterns: Mother and Father work, or Mother works and Father stays home. In a few families, two people share a job. There is much more variety in life style now than there was before. What does the passage talk aboutIt talks about the changes in（）