With time flying, people become aged. Then many people even in their middle age often start to notice that their memory and mental clarity are not what they used to be. We suddenly can’t rememberwe put the keys just a moment ago, or an old friend’s name, or the name of an old band we used to love. As the brain, we refer to these occurrences as "senior moments".seemingly innocent, this loss of mental focus can potentially have a(n)effect on our social andwell-being. Neuroscientists,experts who study the nervous system, are increasingly showing that there’s actually a lot that can be done. Itout that the brain needs exercise in much the same way our muscles do, and the right mentalcan significantly improve our basic cognitive(认知). Thinking is basically aof making connections in the brain. To a certain extent, our ability toin making the connections that drive intelligence is inherited(继承)., because these connections are made through effort and practice, scientists believe that intelligence can expand and wavemental effort. Now, a new Web-based company has taken a stepand developed the first "brain training program" designed to actually help people improve andtheir mental sharpness. The Web-based programyou to systematically improve your memory and attention skills. The program keeps a(n)of your progress and provides detailed feedback(反馈)your performance and improvement. Most importantly, itchanges and improves the games you play toup the strengths you are developing-much like a(n)exercise routine which requires you to increase resistance and vary your muscle use.
试题分析：随着时间的流逝，人们逐渐变老。甚至一些中年人的记忆力和头脑清晰度都大不如前。他们可能突然就不记得钥匙放在哪里了，也记不起来老朋友的名字。这样的现象是大脑退化引起的，我们也称之为“老年失忆症”。 【小题1】考查连词辨析。A什么地方；B何时；C宾语从句中无意义；D为什么。We suddenly can’t rememberwe put the keys我们突然记不起来把钥匙放在了什么地方，故选A。 【小题2】考查动词辨析。A提高；B消褪，衰老，逐渐消失；C恢复；D下降。we refer to these occurrences as "senior moments"这样的现象叫做“老年失忆症”，根据后半句可知，这是由大脑老化导致的，故选B。 【小题3】考查连词辨析。A如果；B除非；C一旦；D尽管。seemingly innocent,(这种现象)尽管看上去是无辜的，但却对社会有着潜在的危害，前后表示转折关系，故选D。 【小题4】考查形容词辨析。A无规律的；B有限的；C有害的；D积极的。根据“this loss of mental focus”可知，无法集中精神是有害的，故选C。 【小题5】考查形容词辨析。A个人的；B心理的；C精神的；D身体的。have a(n)effect on our social andwell-being.无法集中精神无论是对社会还是个人都是有害的，故选A。 【小题6】考查动词辨析。A转向，变得；B发现，找到；C指出，表明(to)；D出现，料想。Itout that the brain needs exercise研究证明，人们的大脑是需要锻炼的，turn out结果是，证明是，故选A。 【小题7】考查名词辨析。A联系，联结；B回应；C锻炼；D联想。根据上一行“the brain needs exercise”可知，这里指的是正确的心智锻炼，故选C。 【小题8】考查名词辨析。A方式；B功能，机能，职责；C情形，状况；D气氛。significantly improve our basic cognitive(认知)显著改善人们的认知机能，故选B。 【小题9】考查名词辨析。A步骤，措施；B状况；C结果，后果；D过程。Thinking is basically aof making connections in the brain.思考是在大脑中建立联结的过程，故选D。 【小题10】考查动词辨析。A坚持；B认为，相信；C成功；D失败。in making the connections成功建立联结，succeed (in) doing sth成功做某事，故选C。 【小题11】考查副词辨析。A因此；B而且；C否则；D然而。根据上一句可知，大脑建立联结的能力一定程度上是先天继承的，这里又说通过努力和练习能够建立联结，说明前后是转折关系，故选D。 【小题12】考查短语辨析。A根据；B不管，不顾；C除了；D代替。scientists believe that intelligence can expand and wavemental effort科学家认为通过心理方面的训练，人们的智力是可以得到提升的，故选A。 【小题13】考查副词辨析。A向后；B进一步；C在一边；D在周围。根据“and developed the first "brain training program"”可知，一家基于Web的公司采取了进一步的措施，故选B。 【小题14】考查动词辨析。A重获，恢复；B反应；C复习，评论；D回答，回应。 improve andtheir mental sharpness这个脑部训练程序旨在帮助人们改善和恢复他们的心理敏锐性，故选A。 【小题15】考查动词辨析。A建议，表明；B制作，使；C赶快；D允许。The Web-based programyou to systematically improve your memory and attention skills. 这个程序能够系统地改善人们的记忆力和注意技能，suggest不能跟不定式作宾补，make后跟动词原形作宾补，allow sb to do sth允许某人做某事，故选D。 【小题16】考查名词辨析。A抓，影响，控制；B记录；C次序，指示，命令；D一步，节奏，速度。The program keeps a(n)of your progress and provides detailed feedback这个程序记录人们取得的进步，并把详细信息反馈给人们，故选B。 【小题17】考查介词辨析。A到，向；B和；C为，给；D关于。provides detailed feedback(反馈)your performance and improvement把关于人们的表现和进步的详细信息反馈给人们，故选D。 【小题18】 考查副词辨析。 A不规律地；B通常地；C持续不断地；D不同寻常地。Most importantly, itchanges最重要的是，反馈的信息会随着人们的进步而持续不断地变化，故选C。 【小题19】考查动词辨析。A携带；B放置；C修建，逐步增强；D带走，花费。toup the strengths来逐步增强人们的心智能力，故选C。 【小题20】考查形容词辨析。A冒险的；B有效的；C无意义的；D熟悉的。much like a(n)exercise routine这个过程很像增强抵抗力和改变肌肉灵活性的一套有效的锻炼动作，故选B。 考点：健康类短文阅读