Parents who feel disappointed at their teenagers’ failure to pay attention in class, and inability to sit quietly long enough to finish homework or plan ahead, should take solace. Their children are not being lazy or careless, according to new research.
The research has found that teenagers’ brains continue developing far longer into adulthood than we used to think. Teens may look like young adults but their brain structure is similar to that of much younger children.
“It is not always easy for teens to pay attention in class without letting their minds wander, or to ignore distractions from their younger brothers or sisters when trying to solve a maths problem,” said Dr Iroise Dumon-theil. “But it’s not the fault of teenagers that they can’t pay attention and are easily distracted. It’s to do with the structure of their brains. Teens simply can’t think as well as an adult.”
The research showed that the brain of a teenager works less effectively than that of an adult. “We knew that the front of the brain of teens functioned in a chaotic (混乱的) way but we didn’ t realize it continued until the late 20s or early 30s,” said Dr Sarah-Jayne Blakemore, who led the research.
Chaotic thought patterns are a result of teenagers’ brains containing too much grey matter — the cell bodies and connections which carry messages within the brain. As we age, the amount of grey matter in our brain reduces.
“What our research has shown is that there is simply too much going on in the brains of teens,” said Blakemore. “The result is that their brain energy and resources are wasted and their decision-making process is badly influenced. Adults, on the other hand, have less grey matter. This means that the brain works far more effectively.”
【小题1】The underlined word “solace” in Paragraph 1 may mean .A． noticeB．medicineC．fortD．action【小题2】When making decisions, .A．teens’ brains continue to do much needless workB．the grey matter in young children’s front brain bees activeC．people are not likely to be distracted until their late 30sD．adults are more independent than teens【小题3】What is the effect of having too much grey matter?A．It makes us always feel disappointed.B．It makes us more intelligent.C．It had a bad effect on the growth of teens.D．It had a bad effect on decision-making.【小题4】What’s the text mainly about?A．Teens have different brains from those of children.B．Adults work more effectively than teens.C．Grey matter makes teens unable to pay attention.D．Brain energy is wasted in the brain’s activity.C
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(答案→)C
解析：这篇文章讲述了灰质使得青少年不能集中精力，随着年龄的增长，灰质减少，大脑才能更有效的工作。
【小题1】solace意思为安慰，故选C。
【小题2】根据“The result is that their brain energy and resources are wasted and their decision-making process is badly influenced. Adults, on the other hand, have less grey matter. This means that the brain works far more effectively.”故选A。
【小题3】根据Adults, on the other hand, have less grey matter. This means that the brain works far more effectively.”所以答案为D。
【小题4】根据全文内容以及Adults, on the other hand, have less grey matter. This means that the brain works far more effectively.”，因此选C。