大学英语四级仔细阅读专项强化真题试卷3
仔细阅读
Losing your ability to think and remember is pretty scary. We know the risk of dementia (痴呆症) increases with age. But if you have memory slips, you probably needn\’ t worry. There are pretty clear differences between signs of dementia and age-related memory loss.
After age 50, it\’ s quite common to have trouble remembering the names of people, places and things quickly, says Dr. Kirk Daffher of Brigham and Women\’ s Hospital in Boston.
The brain ages just like the rest of the body. Certain parts shrink, especially areas in the brain that are important to learning, memory and planning. Changes in brain cells can affect communication between different regions of the brain. And blood flow can be reduced as blood vessels narrow.
Forgetting the name of an actor in a favorite movie, for example, is nothing to worry about. But if you forget the plot of the movie or don\’ t remember even seeing it, that\’ s far more concerning, Daffner says.
When you forget entire experiences, he says, that\’ s \\
1.Why does the author say that one needn’t be concerned about memory slips?(A)
A. Not all of them are symptoms of dementia.
B. They occur only among certain groups of people.
C. Not all of them are related to one’ s age.
D. They are quite common among fifty-year-olds.
解析：细节题。原文第一段最后一句话指出，但如果你有记忆溜走了，你可能并不用担心。痴呆症的症状和与年龄相关的健忘有明显的区别。由此可知，并不是所有的记忆丢失状况都需要去担忧，因为并不是所有的健忘都和痴呆症有关，故答案为A。B、C两项原文均未提及，故排除。D项与原文不符，原文第二段达佛纳博士表明，五十岁以后，很难快速地记住人名、地名和事物名称的现象是很常见的，但并没有表示记忆缺失在五十岁的人中很常见，故排除。
2.What happens as we become aged according to the passage?(C)
A. Our interaction skills deteriorate.
B. Some parts of our brain stop functioning.
C. Communication within our brain weakens.
D. Our whole brain starts shrinking.
解析：细节题。原文第三段指出，大脑的衰老就像身体其他部分的衰老一样，某些部分会萎缩。大脑细胞的变化会影响大脑不同区域之间的交流。由此可知，随着年龄的增长，大脑衰老会影响大脑内部的交流，使交流变弱，故答案为C。A项原文未提及，故排除。B项与原文不符，原文指大脑的部分功能开始退化，而非停止运作，故排除。D项与原文不符，原文中并非指整个大脑开始萎缩，而是大脑的某些部分开始萎缩，故排除。
3.Which memory-related symptom should people take seriously?(A)
A. Totally forgetting how to do one’ s daily routines.
B. Inability to recall details of one’ s life experiences.
C. Failure to remember the names of movies or actors.
D. Occasionally confusing the addresses of one’ s friends.
解析：推理题。原文第五段描述了一些症状，如不会用像微波炉之类的家电和不记得经常去的朋友家的地址，类似于这样的情况就应该引起我们的关注，这些症状可以归纳为日常活动，完全忘记如何进行日常活动是我们应该认真对待的事情，故答案为A。原文中提及，忘记全部经历是一个危险的信号，而没有提及过往经历的细节，故排除B项。根据原文第四段的内容，如果忘记电影里演员的名字这一类的事情，这是不必担忧的，故排除C项。D项原文未提及，故排除。
4.What should people do when signs of serious memory loss show up?(C)
A. Check the brain’ s cognitive reserve.
B. Stop medications affecting memory.
C. Turn to a professional for assistance.
D. Exercise to improve their well-being.
解析：细节题。原文倒数第二段前两句话指出，当严重的失忆症状出现时，达佛纳建议我们去看医生，找出导致失忆症状的影响因素，不要自己解决。由此可知，我们应该向专业人员求助，故答案为C。A项答非所问，建立大脑的认知保护区是预防记忆流失的方式，而非失忆症状出现时我们应该做的事情，故排除。B、D两项原文均未提及，故排除。
5.What is Dr. Daffner’ s advice for combating memory loss?(D)
A. Having regular physical and mental checkups.
B. Taking medicine that helps boost one’ s brain.
C. Engaging in known memory repair activities.
D. Staying active both physically and mentally.
解析：细节题。原文最后一段最后两句话指出，达佛纳建议，让你的大脑保持忙碌和运转的状态。同时也要锻炼身体，因为运动是一种已知的大脑助推器。由此可知，保持身体和大脑的活跃
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