For example, laboratory experiments show that young mice stay close by their mothers for safety. As mice grow, their behavior does too.“When they reach puberty, they’re like, ’I’m going to start checking out how this environment looks without my mom ...’” explains Beatriz Luna, of the University of Pittsburgh.
As a developmental cognitive neuroscientist (认知神经科学家), Luna studies
those changes that occur in the brain as children develop into adults. She and other researchers are showing how the teen experience can lead to powerful advantages later in life. Take mice again: Young mice that explore most tend to live longest — that is, unless a cat eats them, Luna adds.
语篇解读:本文是一篇说明文。主要讨论了在青少年成长的过程中,大脑的变化促使他们区别于其他年龄段的人。12.What does the writer want to tell us by taking mice for example?
A.Young mice try to look for safety.
B.Mice experience different stages.
C.Young mice like to stay with their mothers.
D.Mice also experience a period to explore the world.
解析:选D 写作意图题。根据第四段中的“teens everywhere go through this exploratory period ... Even laboratory mice experience a similar stage during their development”可知,文中提到老鼠的例子是为了说明即使老鼠也会像人一样经历探索的时期。故答案选D。
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