考研考试

【单选题】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 implications for US politics and economy in years ahead―has enthroned the South asAmerica’’s most densely populate 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 inAmerican annual records except for theDepression years.　　Americans have been migrating south and west in larger numbers since World War Ⅱ , and the pattern still prevails.　　Three sun-belt states―Florida, Texas andCalifornia―together had nearly 10 million more people in 1980 than a decade earlier.Among large cities, SanDiego moved from 14th to 8th and SanAntonio from 15th to 10th―withCleveland and WashingtonD、C、, dropping out of the top 10.　　Not all that shift can be attributed to the movement out of the snow belt, census officials say. Nonstop waves of immigrants played a role, too―and so did bigger crops of babies as yesterday’’s "baby boom" generation reached its child-bearing years.　　Moreover, demographers see the continuing shift south and west as joined by a related but newer phenomenon: More and more,Americans apparently are looking not just for places with more jobs but with fewer people, too. Some instances:　　Regionally, the Rocky Mountain states reproved the most rapid growth rate―37.1 percent since 1970 in a vast area with only 5 percent of the US population.　　Among states, Nevada andArizona grew fastest of all: 63.5 and 53.1 percent respectively.Except for Florida and Texas, the top 10 in rate of growth is composed of Western state with 7.5 million people―about 9 per square mile.　　The flight from overcrowdedness affects the migration from snow belt to more-bearable climates. Nowhere do 1980 census statistics dramatize more theAmerican search for spacious living than in the Far West. There,California added 3.7 million to its population in the 1970s, more than any other state.　　In that decade ,however, large numbers also migrated fromCalifornia, mostly to other parts of the West. Often they chose―and still are choosing―somewhat colder climates such as Oregon, Idaho andAlaska in order to escape smog, crime and other plagues of urbanization in the Golden State.　　As a result,California’’s growth rate dropped during the 1970s, to 18.5 percent―little more than two thirds the 1960s’’ growth figure and considerably below that of other Western states.The census distinguished itself from previous studies on population movement in that ____________.
A、it stresses the climatic on population distribution
B．it highlights the contribution of continuous waves of immigrants
C．it reveals theAmericans’’ new pursuit of spacious living
D．it elaborates the delayed effects of yesterday’’s "baby boom"

网考网参考答案：C
网考网解析：
倒数第三段说明，“1980年人口普查数字表明，西部地区的美国人口对宽敞居住条件的追求”，反映了人口普查的一个特点。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>