Discerned from the perplexing picture of population growth the 1980 census provided, America in 1970s ____. We can see from the

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问题 Discerned from the perplexing picture of population growth the 1980 census provided, America in 1970s ____.
We can see from the available statistics that ______.

选项 A、California was once the most thinly populated area in the whole US
B、the top 10 states in growth rate of population were all located in the West
C、cities with better climates benefited unanimously from migration
D、Arizona ranked second of all states in its growth rate of population

答案D

解析 这是一道事实分析题。作者在第八段中提到:在这次人口普查中,增长速度最快的地区当数落基山脉周围各州,其中Nevada和Arizona州增长最快,分别为63.5%和53.1%。排名前十位的是否均在西部?在本段最后一句中可以看到:南部的两个州Florida和Texas也在其列。那么迁移的人口是否都流向气候温和的城市?对此,作者在倒数第四段中作了叙述:逃避城市的拥挤这一因素对由寒带向比较温暖的气温带迁移这一现象产生了一定的影响。随后作者在倒数第二段中又提到:为逃避加利福尼亚的烟雾、罪恶及其它的城市弊端,许多人迁移到Oregon,Idaho及Alaska等比较寒冷的州。由此可见,其他选项菌有悖原意,也缺乏事实依据。
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