第2题考查考生阐述主旨事实和相关细节的能力。由文章第二段可知，当the remaining longer. As a matter of fact, the number of U. S. citizens 85 years old and older is growing six times as fast as the rest of the population. It is also largely due to the old

　　growing of the “baby boomers”, the generation born after World WarⅡ. In 1957, over 4.3 million babies were born. More than 75 million Americans were born between 1946 and 1964, the largest generation in U.S. history. In less than twenty pears, millions of they will become elderly people.

　　The “graying” of the U. S. will greatly affect the nation’s family and workforce. One likely development will be a gradual change in the family unit; it will move away from the nuclear family and towards a multigenerational family. The other likely development will be a change in the proportion (比例) of the nation’s workforce. In 1989 there were 3.5 workers for every person 65 and older; by the year 2030, them will only be 2 workers for every person 65 and older.

　　Title 1.

　　Number of citizens 65

　　Or older

　　2.

　　By 2020 By 2030

　　39 million 51 million 65 million

　　3.

　　4.

　　6.

　　8.

　　—multigeneratiomal family

　　5.

　　7.

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