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While teenagers who are at risk of depression with risky behaviors — drinking alcohol, smoking cigarettes and cutting classes often alert parents and teachers that serious problems are brewing, a new study finds that there’s another group of adolescents who are in nearly as much danger of experiencing the same mental symptoms.
These teens use tons of media, get insufficient sleep and have a sedentary(不爱活动的) lifestyle.
The study’s authors surveyed 15,395 students and analyzed nine risk behaviors, including excessive alcohol use, illegal drug use, heavy smoking and high media use.
The findings caught Carli off guard. “We didn’t expect that,” he says. “The high-risk group and low-risk group are obvious, but this third group was not only unexpected.
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.
| A．Because their behaviors are not usually seen as a red flag, these young people have been called the “invisible risk” group by the study’s authors. |
| B．Their aim was to determine the relationship between these risk behaviors and mental health issues in teenagers. |
| C．Of course, that may sound like a description of every teenager on the planet. |
| D．It was so distinct and so larger — nearly one third of our sample — that it became a key finding of the study.” |
| E．It was intended to dig into the reasons for depression. |
| F．And early identifications, support and treatment for mental health issues, he says, are the best ways to keep them from turning into full-blown disorders. |
| G．A teenager who suffers from a lack of sleep may have a high risk of depression. |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
