阅读理解Greatchangeshavebeenmadeinfamily

阅读理解Great changes have been made in family life because of science and industry. In the past, when more Americans lived on farms, the typical family had many children. In a farm family, parents and their children often lived with grandparents. Often, too, uncles and aunts lived nearby. But when industry bees more important than agriculture in American life, families bee smaller because industry requires workers who are ready and able to move off the land and to move again whenever necessary. And large families cannot be moved from place to place as easily as smaller families can. So , at present people tend to have smaller families. In the future, because of industrialization, a typical family will be required to move even more often than now, so families will be even smaller. The typical families may remain childless and are only made up of a man and a woman. A small number of families may take raising children as their chief work. At the same time they may also raise other people’s children, leaving those families free to move job to job.1.The main topic discussed in the passage is _______. A.the development of science and industry in AmericaB.the influence(影响) of science and industry on America families.C.the harmful effect of industrializationD.the social problems resulting from the highly developed science and industries in America2._____ are described in the passage. A.Families of the pastB.Families of the present and of the futureC.Families of the past and of the futureD.Families of the past, the present and the future3.According to the writer, one of the reasons that families are getting smaller in American is that _____. A.children tend to leave their parents and grandparents when they grow upB.people stop caring for having childrenC.the need for workers who are able to move any time has been increasingD.both old and young people like to live by themselves4._____ will be in charge of raising children in the future. A.most families  B.all families  C.social workers D.a small number of families5.From the passage, we can conclude that _____. A.science and industry have caused thousands of families to separateB.children do not like to live with their parents or grandparentsC.large families can hardly exist in modern societyD.Americans are very careful in choosing their jobs