2. 考研
  3. numbers of life and prosperity substantially higher varied irregularly A. This does not mean that large【T13】______ people B.

numbers of life and prosperity substantially higher varied irregularly A. This does not mean that large【T13】______ people B.

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问题 numbers of
life and prosperity
substantially higher
varied irregularly
A. This does not mean that large【T13】______ people
B. it represented a response to the return of peaceful【T14】______
C. is【T15】______ than it is in other industrialized countries
D. has【T16】______ over the past century
    The United States has historically had higher rates of marriage than those of other industrialized countries. The current annual marriage rate in the United States—about 9 new marriages for every 1,000 people—【T17】______ . However, marriage is no longer as widespread as it was several decades ago. The proportion of American adults who are married declined from 72 percent in 1970 to 60 percent in 2002.【T18】______ will remain unmarried throughout their lives. Throughout the 20th century, about 90 percent of Americans married at some point in their lives. Experts project that about the same proportion of today’s young adults will eventually marry.
    The timing of marriage【T19】______ . In 1995 the average age of women in the United States at the time of their first marriage was 25. The average age of men was about 27. Men and women in the United States marry for the first time at an average of five years later than people did in the 1950s. However, young adults of the 1950s married younger than did any previous generation in U. S. history. Today’s later age of marriage is in line with the age of marriage between 1890 and 1940. Moreover, a greater proportion of the population was married (95 percent) during the 1950s than at any time before and after. Experts do not agree on why the "marriage rush" of the late 1940s and 1950s occurred, but most social scientists believe【T20】______ after 15 years of severe economic depression and war.
【T19】
选项 A、 
B、 
C、 
D、 
答案D
解析 空格后一句的意思为：1995年，美国女性首次结婚的平均年龄为25岁。男性为27岁。所以，D项“没有规律地变化”符合题意。所以，答案是D。
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