Passage Two
Questions 51 to 55 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.
51. 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.
52. 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.
53. 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.
54. 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.
55. What is the significance of Vladimir Carli's study?
A. It offers a new treatment for psychological problems among teenagers.
B. It provides new early-warning signals for identifying teens in trouble.
C. It may have found an ideal way to handle teenagers with behavioral problems.
D. It sheds new light on how unhealthy behaviors trigger mental health problems.
答案解析：
51. 由题干中的关键词“wear their troubles like a neon sign”定位到文中第一段“Teenagers at risk of depression, anxiety and suicide often wear their troubles like a neon sign. Their risky behaviors...can alert parents and teachers that serious problems are brewing.”。文中提到有抑郁、焦虑和自杀风险的青少年的危险行为能提醒家长和老师问题在滋生，说明他们的心理问题很明显，容易被观察到。所以选C。
52. 由题干中的关键词“finding of the new study”定位到文中第二段“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...these young people have been dubbed the 'invisible risk' group by the study's authors.”。文中指出新研究发现有一群青少年存在心理问题风险，但他们之前未被注意到。所以选D。
53. 由题干中的关键词“invisible risk” group定位到文中第三段“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.”。文中提到这些青少年的行为通常不被视为危险信号，所以被称为“隐形风险”群体。所以选B。
54. 由题干中的关键词“new study find about the invisible group”定位到文中第七段“But the invisible group wasn't far behind the high - risk set, with more than 13% of them exhibiting depression.”。文中表明“隐形风险”群体患抑郁症的比例接近高风险群体。所以选A。
55. 由题干中的关键词“significance of Vladimir Carli's study”定位到文中最后一段“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.”。文中提到该研究为家长、老师和心理健康护理提供者提供了新的早期预警信号。所以选B。
