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¡¡¡¡Reading Aloud¡¡¡¡¢ñ. For all the changes in fertility and mortality that Americans have experienced from thecolonial period until today£¬ there has been surprisingly little change in the structure of thefamily until the past quarter century. Until that point£¬ the age of marriage changed from timeto time£¬ but only a minority of women never married and births outside marriage weretraditionally less than 10 percent of all births.¡¡¡¡But this fundamental social institution has changed profoundly since 1980. In fact£¬ if onewere to define the most original demographic feature in the post-1980 period in the UnitedStates£¬ it would be the changes that were occurring in both families and households for allsections of the national population. The traditional American family has been undergoingprofound transformations for all ages£¬ all races£¬ and all ethnic groups. Every aspect of theAmerican family is experiencing change. These include the number of adults who marry£¬ thenumber of households that are formed by married people£¬ the number of children that areconceived£¬ the economic role of mothers£¬ the number of non-family households£¬ and even theimlortance of marriage in accounting for total births.¡¡¡¡Comprehension of the Text¡¡¡¡¢ò. Decide whether each of the statements below is true or false according to the text.¡¡¡¡Write the letter T or F before each statement.¡¡¡¡1.__The traditional American family has been undergoing profoundtransformations for all ages£¬ all races£¬ and all ethnic groups.¡¡¡¡2.__By 2000£¬ 22 percent of adult white women and 42 percent of adult blackwomen had never married.¡¡¡¡¡­¡­