2021湖南普通专升本英语备考技巧：湖南专升本网教你如何运用数字进行文章推理

(1)运用数字进行推理
Example
Emerging from the 1980 census is the picture of a nation developing more and more regional competition,as population growth in the Northeast and Midwest reaches a near standstill.
This development—and its strong implication for US politics and economy in years ahead—has enthroned the South as America’s most densely populated region for the first time in the history of the nation’s head counting.
Altogether,the Us population rose in the 1970s by 23.2 million people—numerically the third-largest growth ever recorded in a single decade.Even so,that gain adds up to only 11.4 percent,lowest in American annual records except for the Depression years.
Americans have been migrating south and west in larger numbers since World WarⅡ,and the pattern still prevails.
Discerned from the perplexing picture of population growth the 1980 census provided,America in 1970s.
[A]enjoyed the lowest net growth of population in history
<B>witnessed a southwestern shift of population
[C]underwent an unparalleled period of population growth
[D]brought to a standstill its pattern of migration since World WarⅡ
这是一道涉及数字的题目，从标志词1970s可以定位为文章第三段，本段指出：“20世纪70年代，美国人口总共增长了2 320万——从数字上看，这是有纪录以来10年期人口增长的第三高峰。即使如此，人口总数也只增加了11.4%，除了大萧条时期，这是美国年度记录最低的增长率。”因此，[A]选项和[C]选项与文意不符。接着文章第四段谈到人口普查显示出“第二次世界大战以来，美国人不断移居西部和南部，现在这种趋势依然存在”。因此可以得出<B>选项是正确答案，而[D]选项与该段内容正好相反。