2014年全国攻读硕士研究生入学统一考试英语一试题及解析 去百度文库，查看完整内容>内容来自用户:广西の超人2014年全国攻读硕士研究生入学统一考试英语（一）试题及解析Directions:Read the following text. Choose the best word(S) for each numbered blank and mark A, B ,C or D on ANSWER SHEET. (10 Points)As many people hit middle age, they often start to notice that their memory and mental clarity are not what they used to be. We suddenly can't remember1we put the keys just a moment ago, or an old acquaintance's name, or the name of an old band we used to love. As the brain2, we refer to these occurrences as "senior moments."3seemingly innocent, this loss of mental focus can potentially have a(an)4impact on our professional, social, and personal5.Neuroscientists, experts who study the nervous system, are increasingly showing that there's actually a lot that can be done. It6out that the brain needs exercise in much the same way our muscles do, and the right mental7can significantly improve our basic cognitive8. Thinking is essentially a9of making connections in the brain. To a certain extent, our ability to10in making the connections that drive intelligence is inherited.11, because these connections are made through effort and practice, scientists believe that intelligence can