A. makes friends with Richard
B. makes full use of his bush skills
C. doesn’t know how to fit into city life
D. feels excited about living in a big city
第Ⅱ卷(非选择题, 共35分)
第四部分:任务型阅读(共10小题, 每小题1分, 满分10分)
注意:每个空格只填一个单词。请将答案写在答题纸上相应题号的横线上。
Until just a few years ago,we doctors believed that the brain stopped making new neural(神经系统的)connections (meaning that your memory began to get worse)when the body stopped developing,usually in your early 20s. And we knew that,like any other body part,neurons weaken as we age. Loss of brain function due to neural breakdown was assumed to be a normal,unavoidable part of aging.
It turns out that we were wrong. In the past few years,it has
that you can,in fact,make new neurons starting in your 20s and continuing well into old age. You can literally rewire the brain with new parts as the older parts wear out. How?Simple:Keep learning. Just as your body can pack on and condition new muscle,your brain can rebuild used-up neurons.
How strong is the evidence for this?Strong enough that a $200 million industry devoted to brain boosting software (products like Brain Age,MindFit,and Lumosity that supposedly improve your memory function)has sprung up out of nowhere. All“mental fitness”means are keeping your memory intact(everything from phone numbers to how to throw a football).So what can you do to stay smart?
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