20．New research suggests that speaking more than one language may delay different kinds of dementia（痴呆），that is the loss of mental ability．In fact，researchers say，speaking two languages appears to be more important than the level of education in defending against dementias．
A study in India examined the effect of knowing more than one language in delaying the first signs of several dementias．Researchers studied nearly 650people whose average age was 66.240of those studied suffered from Alzheimer's，the most common form of mental decline（下降）.391of the subjects spoke two or more languages．Researchers found the dementias began about four-and-a-half years later in those who spoke two languages compared to those who spoke only one language．The level of education had no effect on the age at the first sign of dementia．
Thomas Bak，from the Center of Cognitive Aging at the University of Edinburgh in Scotland，who helped to organize the study，suggests that individuals who speak more than one language train their brains by moving back and forth between different words and expressions．He also believes this effort improves what scientists called executive（执行的） functioning，which often weakens in people with dementias．He states that researchers found there was no extra gain in speaking more than two languages．
Mr Bak says it does not appear important whether you learn another language at a young age or later in life．It's not something that"you missed the boat when you do not do it as a baby．"It is something that is still quite useful and powerful when you do it as an adult．
59．The finding of the study is thatB．
A．learning more than one language can cure dementias
B．speaking two languages may delay kinds of dementias
C．the level of education matters in defending against dementias
D．people who suffer from dementias will lose mental ability
60．The underlined word"subjects"refers toA．
A．people who were studied in the study
B．notices that were put on about the study
C．questions that were asked in the study
D．methods that were used in the study
61．According to Mr Bak，C．
A．the more languages one speaks，the less chance of getting dementias
B．people's executive functioning often strengthens with age
C．when you learn one more language makes no difference
D．it is much easier to learn one more language at a young age
62．This passage may probably be seen inB．
A．a research plan B．a health magazine
C．a book review D．a business magazine．
分析 文章介绍一项新的调查结果，研究表明会多种语言或能延迟痴呆的最初迹象，文章介绍调查的方式和过程，解释其中的道理．
解答 59．B．细节理解题：从第一段的句子：New research suggests that speaking more than one language may delay different kinds of dementia（痴呆），that is the loss of mental ability．可知新研究表明说两种语言可以延缓各种痴呆，而不是治愈，故选B．
60．A．词义猜测题：从第二段的Researchers studied nearly 650 people whose average age was 66.240 of those studied suffered from Alzheimer's，可知subjects是指的：接受测试的人，故选A．
61．C．细节理解题：从最后一段的句子：Mr Bak says it does not appear important whether you learn another language at a young age or later in life．可知Mr Bak认为是什么时候学习的两种语言没有什么影响，故选C．
62．B．推理判断题：这篇文章讲的是说两种语言可以延缓各种痴呆，这是关于健康的话题，故选B．
点评 考察学生的细节理解和推理判断能力，做细节理解题时一定要找到文章中的原句，和题干进行比较，再做出正确的选择．在做推理判断题不要以个人的主观想象代替文章的事实，要根据文章事实进行合乎逻辑的推理判断．
