阅读理解Americaisgrowingolder.Fiftyyearsago,only4outofevery100peopleinth

阅读理解 America is growing older. Fifty years ago, only 4 out of every 100 people in the United States were 65 or older. Today, 10 out of every 100 Americans are over 65. The aging of the population will affect American society in many ways — edu-cation, medicine, and business. Quietly, the aging of America has made us a very different society — one in which people have a quite different idea of what kind of behavior is suitable at various ages.
A person’s age no longer tells you anything about his/ her social position, marriage or health. There’s no longer a particular year in which one goes to school or goes to work or gets married or starts a family. The social clock that kept us on time and told us when to go to school, get a job, or stop work-ing isn’t as strong as it used to be. It doesn’t surprise us to hear of a 29-year-old university president or a 35-year-old grandmother, or a 70-year-old man who has become a father for the first time. Public ideas are changing.
Many people say, “I am much younger than my mother or my father was at my age.” No one says “Act your age” any more. We’ve stopped looking with surprise at older people who act in youthful ways.1.It can be learned from the text that the aging of the popula-tion in America ________.A.has made people feel youngerB.has changed people’s social positionC.has changed people’s understanding of ageD.has slowed down the country’s social development2.The underlined word “one” refers to ________.A.a societyB.AmericaC.a placeD.population3.“Act your age” means people should ________.A.be active when they are oldB.do the right thing at the right ageC.show respect to their parents young or oldD.take more physical exercises suitable to their age4.f a’ 25-year-old man becomes general manager of a big firm, the writer of the text would most probably consider it _________.A.normalB.wonderfulC.unbelievableD.unreasonable

CABA解析主要讲述美国社会老龄化这一事实以及这一变化对人们的行为、思想等各方面都产生了极大的影响，其中第一、二段的最后一句话尤为重要。
1.C 主旨题。根据第一、二段的最后一句及第三段可判断。
2.A 细节题。one是a society的同位语且后面跟了一个定语从句，可以通过分析句子结构得出正确

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