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  3. There is plenty we don’t know about criminal behavior. Most crime goes unreported so it is hard to pick out trends from the data

There is plenty we don’t know about criminal behavior. Most crime goes unreported so it is hard to pick out trends from the data

admin2014-12-27  48
问题     There is plenty we don’t know about criminal behavior. Most crime goes unreported so it is hard to pick out trends from the data, and even reliable sets of statistics can be difficult to compare. But here is one thing we do know: those with a biological predisposition to violent behavior who are brought up in abusive homes are very likely to become lifelong criminals.
    Antisocial and criminal behavior tends to run in families, but no one was sure whether this was due mostly to social-environmental factors or biological ones. It turns out both are important, but the effect is most dramatic when they act together. This has been illustrated in several studies over the past six years which found that male victims of child abuse are several times as likely to become criminals and abusers themselves if they were born with a less-active version of a gene for the enzyme monoamine oxidase A(MAO-A), which breaks down neurotransmitters crucial to the regulation of aggression.
    Researchers recently made another key observation: kids with this "double whammy" of predisposition and an unfortunate upbringing are likely to show signs of what’s to come at a very early age. The risk factors for long-term criminality— attention deficit hyperactivity disorder, low IQ, language difficulties — can be spotted in kindergarten. So given what we now know, shouldn’t we be doing everything to protect the children most at risk?
    No one is suggesting testing all boys to see which variant of the MAO-A gene they have, but what the science is telling us is that we should redouble efforts to tackle abusive upbringings, and even simple neglect. This will help any child, but especially those whose biology makes them vulnerable. Thankfully there is already considerable enthusiasm in both the US and the UK for converting the latest in behavioral science into parenting and social skills: both governments have schemes in place to improve parenting in families where children are at risk of receiving poor care.
    Some people are uncomfortable with the idea of early intervention because it implies our behavior becomes "set" as we grow up, compromising the idea of free will. That view is understandable, but it would be negligent to ignore what the studies are telling us. Indeed, the cost to society of failing to intervene — in terms of criminal damage, dealing with offenders and helping victims of crime — is bound to be greater than the cost of improving parenting. The value to the children is immeasurable.
The recent observation implicated that to check the development of antisocial and criminal behavior ______.
选项 A、boys are to be screened for the biological predisposition
B、high-risk kids should be brought up in kindergarten
C、it is important to spot the genes for the risk factors
D、active measures ought to be taken at an early age
答案D
解析 细节题。题意：最近的观察暗示为了探究反社会和犯罪行为的发展，______。根据题干信息，可以定位到第三段。根据该段主题句可以得知有暴力倾向的孩子在早期会出现迹象。而最后一句用反问的方式提出，我们应该就我们目前了解的知识，采取措施保护那些处于最危险状态的孩子们。因而答案为D。
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