问题补充：
Passage One
When an American today says “my family is coming to visit”, he or she is using family to include cousins, uncles, grandparents, or any other relatives who do not live with him or her. That is, this person is using family the way it was used 150 years ago when the majority of Americans were farmers. In that earlier time, of course, three or more generations lived under one roof—grandparents, their children, their children’s spouses, and the children’s children.
