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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.
Which one is NOT the possible reason of the dropping crime rates?
选项 A、Better policing.
B、Better education.
C、Aging societies.
D、Declining use of drugs.
答案B
解析 根据题干定位到原文第三段第三、四句：Today，criminologists still differ on what hascaused 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 decli—ning usage of hard drugs are widely cited．大意为：对于犯罪率降低的原因犯罪学家观点不一致，但是……，要特别注意But一词后面的内容，But后面列出一系列短语，并说道它们被广泛引述，也就是说广泛认为这些是原因。而选项中只有[B]Better education没有出现，故该项为答案。
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