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  3. As many people hit middle age,they often

As many people hit middle age,they often

admin2022-08-02  16
问题 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 remember___1___we 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 brain___2___,we refer to these occurrences as“senior moments.”___3___seemingly innocent,this loss of mental focus can potentially have a（n）___4___impact on our professional,social,and personal___5___.Neuroscientists,experts who study the nervous system,are increasingly showing that there’s actually a lot that can be done.It___6___out that the brain needs exercise in much the same way our muscles do,and the right mental___7___can significantly improve our basic cognitive___8___.Thinking is essentially a___9___of making connections in the brain.To a certain extent,our ability to___10___in making the connections that drive intelligence is inherited.___11___,because these connections are made through effort and practice,scientists believe that intelligence can expand and fluctuate___12___mental effort.Now,a new Web-based company has taken it a step___13___and developed the first“brain training program”designed to actually help people improve and regain their mental___14___.The Web-based program___15___you to systematically improve your memory and attention skills.The program keeps___16___of your progress and provides detailed feedback___17___your performance and improvement.Most importantly,it___18___modifies and enhances the games you play to___19___on the strengths you are developing—much like a（n）___20___exercise routine requires you to increase resistance and vary your muscle use.（18）选？A.irregularlyB.habituallyC.constantlyD.unusually
选项 A.irregularly
B.habitually
C.constantly
D.unusually
答案 A
解析 上下文语义衔接+副词辨析上文提到智力锻炼是一个过程，需要实践和锻炼，并且可以系统性地提高，这里作者主要强调“调整和改进的连续性”。此外，从全文来看，作者对这一程序持肯定态度。因此，选项A是最佳答案。选项B habitually侧重指“动作或人的习惯性或者积习难改”；选项C强调“不定期”；选项D侧重指“与众不同”，可排除选项B、C和D。
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