Questions are based on the following passage. Teenagers at risk of de-考呗网题库移动版

单选题Questions are based on the following passage.
Teenagers at risk of depression, anxiety and suicide often wear their troubles like a neon (霓虹灯)sign. Their risky behaviors--drinking too much alcohol, using illegal drugs, smoking cigarettes and skipping school--can alert parents and teachers that serious problems are brewing.
But a new study finds that there's another group of adolescents who are in nearly as much danger of experiencing the same psychiatric symptoms: teens who use tons of media, don't get enough sleep and have a sedentary (不爱活动的) lifestyle.
Of course, that may sound like a description of every teenager on the planet. But the study warns that it is teenagers who engage in all three of these practices in the extreme who are truly in jeopardy.Because their behaviors are not usually seen as a red flag, these young people have been dubbed the "invisible risk" group by the study's authors.
"In some ways they're at greater risk of falling through the cracks," says researcher Vladimir Carli. "While most parents, teachers and clinicians would react to an adolescent using drugs or getting drunk, they may easily overlook teenagers who are engaging in inconspicuous behaviors."
The study's authors surveyed 12,395 students and analyzed nine risk behaviors, including excessive alcohol use, illegal drug use, heavy smoking, high media use and truancy (逃学). Their aim was to determine the relationship between these risk behaviors and mental health issues in teenagers.
About 58% of the students demonstrated none or few of the risk behaviors. Some 13% scored high on all nine of the risk behaviors. And 29%, the "invisible risk" group, scored high on three in particular: They spent five hours a day or more on electronic devices. They slept six hours a night or less. And they neglected "other healthy activities."
The group that scored high on all nine of the risk behaviors was most likely to show symptoms of depression; in all, nearly 15% of this group reported being depressed, compared with just 4% of the low-risk group. But the invisible group wasn't far behind the high-risk set, with more than 13% of them exhibiting depression.
The findings caught Carli off guard. "We were very surprised," he says. "The high-risk group and low-risk group are obvious. But this third group was not only unexpected, it was so distinct and so large--nearly one third of our sample--that it became a key finding of the study. "
Carli says that one of the most significant things about his study is that it provides new early-warning signs for parents, teachers and mental health-care providers. And early identification, support and treatment for mental health issues, he says, are the best ways to keep them from turning into full-blown disorders.
What does the author mean by saying "Teenagers at risk of depression, anxiety and suicide often wear their troubles like a neon sign" (Lines 1 - 2, Para.1 ) ?

A．Mental problems can now be found in large numbers of teenagers.
B．Teenagers' mental problems are getting more and more attention.
C．Teenagers' mental problems are often too conspicuous not to be observed.
D．Depression and anxiety are the most common symptoms of mental problems.

参考答案C

解析:全文翻译
(51)面临抑郁、焦虑和自杀风险的青少年，常常把自己的问题表现得如同霓虹灯标识一般明目昭彰。他们的一些危险行为——过量饮酒、使用违禁药品、抽烟以及逃学——能够警示家长和老师严重的问题即将发生。
但是一项新的研究显示，另一个青少年群体几乎面临着同样严重的精神病征风险：那些大量使用多媒体，睡眠不足和不爱活动的孩子。
当然，这听上去像是在说这个星球上的每一个青少年。但研究警示，在上述三个方面均有极端表现的孩子才是真正的高危人群。(53)由于他们的行为通常并不被视为危险信号，这些年轻人被研究者标记为“隐形风险”人群。
“从某种意义上讲，他们更易深陷困境，”研究人员弗拉基米尔·卡利说，“大多数家长、老师和医生会对青少年滥用药品或酗酒有所反应，而却很容易忽视这些深陷此类难以察觉的行为的青少年。”
研究者们调查了12395名学生，分析了九种风险行为，包括酗酒、使用违禁药品、吸烟成瘾、过量使用多媒体和逃学。其目的在于确定青少年中存在的这些高危行为和精神健康问题之间的相互关系。
大约58％的学生没有表现出或极少表现出这些高危行为。大约l3％的学生在全部九种高危行为上计分尤其高。而29％为“隐形风险”群体，在三类行为上计分尤其高：他们每天花在电子设备上的时间在五个小时以上；他们晚间的睡眠只有或少于六个小时；他们忽视“其他健康活动”。
在全部九种高危行为上都有高计分的群体最易表现出抑郁症症状；整体来看，这个群体中有15％报告有抑郁倾向，而低风险群体只有4％报告存在这类问题。(54)但隐形风险人群也与高危人群相差无几，他们中有13％表现出抑郁症状。
研究结果令卡利始料未及。“我们十分震惊，”他说，“高危人群和低危群体是显而易见的，(52)但是这个第三类群体不仅是出乎意料的，而且十分明显，数量庞大——占我们样本数量的三分之一——成为这个研究的关键性发现。”
(55)卡利说，他的研究最为关键的一点在于为家长、教师和精神保健服务人员提供新的早期警示信号。尽早发现，并对精神健康问题提供支持和治疗，他说，这对于防止他们变成完全意义上的失常者是最佳的方法。
详解详析
由题干提示定位到文章首段第一句：Teenagers at risk of depression，anxiety and suicide often wear their troubles like a neon(霓虹灯)sign．
语义理解题。定位句说到，有精神健康问题的青少年常常将其问题表现得如同霓虹灯标识一样，而随后说到了具体的表现形式有酗酒、使用违禁药品、逃学等，并指出这些行为会引起家长和教师的警惕，可见文中说到这些青少年将问题表现得如霓虹灯标识一样是为了说明这些表现形式很明显，难以被忽视，故答案为C.。
A.“很多青少年都有精神问题”，在本段中作者显然还没有谈及到人群的数量问题，可以排
除；B.“青少年的精神问题得到越来越多的关注”，作者在后文中并没有对比当前与过去人们对这类问题的关注情况，故排除；D.“抑郁和焦虑是精神问题最常见的病征”，文章并没有就精神问题本身展开讨论，该项偏离主题，故排除。

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单选题What is the finding of the new study?

A．Teenagers' lifestyles have changed greatly in recent years.
B．Many teenagers resort to drugs or alcohol for mental relief.
C．Teenagers experiencing psychological problems tend to use a lot of media.
D．Many hitherto unobserved youngsters may have psychological problems.

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单选题Why do the researchers refer to teens who use tons of media, don't get enough sleep and have a sedentary lifestyle as the "invisible risk" group?

A．Their behaviors can be an invisible threat to society.
B．Their behaviors do not constitute a warning signal.
C．Their behaviors do not tend towards mental problems.
D．Their behaviors can be found in almost all teenagers on earth.

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单选题 What does the new study find about the invisible group?

A．They are almost as liable to depression as the high-risk group.
B．They suffer from depression without showing any symptoms.
C．They do not often demonstrate risky behaviors as their peers.
D．They do not attract the media attention the high-risk group does.

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