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  3. America has seen a drop in crime rates that in earlier years would have been universally viewed as impossible. The overall crime

America has seen a drop in crime rates that in earlier years would have been universally viewed as impossible. The overall crime

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问题     America has seen a drop in crime rates that in earlier years would have been universally viewed as impossible. The overall crime rate has plummeted by 45% since peaking in 1991 and by 13% just since 2007—counterintuitively continuing to drop through the recession and sharp spike in unemployment.
    Since 1991, according to FBI data, the number of violent crimes has fallen 36% nationally and 64% in the nation’s largest cities. And in New York and Los Angeles, the nation’s two largest cities , it has fallen even further. Property crime has also become increasingly rare. Incredibly, in New York City, car thefts have plunged 94% in the past two decades.
    How is this possible? In the mid-1990s, few saw this decline coming, and many warned that crime would surge once again as teens of that era grew into young adults. Today, criminologists still differ on what has caused the nationwide turnaround in crime rates and why those dire predictions never came to pass. But crime-fighting technology, better policing, aging societies, growing urban populations and declining usage of hard drugs are widely cited. For many Americans, the drop in crime has resulted not only in a much higher quality of life but in a reduced economic burden as well. Safer cities generally mean stronger urban economies.
    In the same category of big surprises, teen-pregnancy rates have fallen to their lowest level in more than 30 years, according to the widely respected Guttmacher Institute. They have declined 51% from their 1990 peak, based on the latest available data, and the teenage birthrate is down 43% from that year’s level. Today, fewer teens are becoming pregnant and becoming mothers than at any point since reliable data has been collected by the National Center for Health Statistics. This is also true for women in the 20-to-24 age group. To put it mildly, there were very few predictions to this effect a generation ago. In addition, overall birthrates in the U. S. have turned up for the first time since 2007—including for children born to women in a college education—to just shy of 4 million.
The best title for the text may be______.
选项 A、America’s Crime Rate And Teenage Birthrate: Surprisingly Down
B、America’s Crime Rate Drops While Teen-pregnancy Rate Increases
C、Will Crime Rate And Teenage Birthrate Remain Low in the Future
D、Decline of Crime Rate in the US: Something That Has Been Predicted
答案A
解析 本文前三段讨论美国犯罪率下降，最后一段讨论青少年怀孕率也同时下降；同时原文第三段首句指出：How is this possible?In the mid-1990s，few saw this decline coming，andmany warned that crime would surge once again as teens of that era grew into young adults．最后一段倒数第二句又指出：To put it mildly，there were very few predictions to this effect a generationago．文中两次提到犯罪率和青少年怀孕率下降是很多人没有预测到的，其中选项[A]中的surprisingly down可以体现出这点，故选项[A]正确。选项[B]中的teen-pregnancy rate increases明显错误。选项[C]中的in the future文章没有讨论。选项[D]中的has been predicted与原文不符。
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