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  3. Man still has a lot to learn about the most powerful and complex part of his body—the brain. In ancient times men did not th

Man still has a lot to learn about the most powerful and complex part of his body—the brain. In ancient times men did not th

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问题     Man still has a lot to learn about the most powerful and complex part of his body—the brain.
    In ancient times men did not think that the brain was the center of mental activity. Aristotle, the philosopher of ancient Greece, thought that the mind was based in the heart.(71)It was not until the 18 th century that man realized that the whole of the brain was involved in the workings of the mind.
    During the 19th century scientists found that when certain parts of the brain were damaged, men lost the ability to do certain things. And so, people thought that each part of the brain controlled a different activity. But modern research has found that this is not so. It is not easy to say exactly what each part of the brain does.
    In the past 50 years there has been a great increase in the amount of research being done on the brain.(72)Chemists and biologists have found that the way the brain works is far more complicated than they had thought. In fact, many people believe that we are only now really starting to learn the truth about how the human brain works. The more scientists find out, the more questions they are unable to answer. For instance, chemists have found that over 100,000 chemical reactions take place in the brain every second. Mathematicians who have tried to use computers to copy the way the brain works have found that even using the latest electronic equipment they would have to build a computer which weighed over 10,000 kilos. Some recent research also suggests that we remember everything that happens to us. We may not be able to recall this information, but it is all stored in our brains.
    Scientists hope that if we can discover how the brain works, the better use we will be able to put it to. For example, how do we learn language? Some children learn to speak, read and write when they are very young compared to average children. But scientists are not sure why this happens. They are trying to find out whether there is something about the way we teach language to children which in fact prevents children from learning sooner.
What does the author mention in the history of the brain study?
选项 A、Ancient people thought the brain was much more important than the heart.
B、Scientists in 19th century believe that all parts of the brain work together to control one activity.
C、Aristotle thought that our heart is the controlling center of the activity.
D、People gradually noticed the importance of the brain over time.
答案D
解析 事实细节题。本题可定位在文章的第二段和第三段，根据第二段第二句“…the mind was based in the heart．”可知，那时亚里士多德认为大脑的工作是基于心脏的，故A项错误；而文章只说了心脏和大脑的关系，并没有说心脏是人类行为的控制中心，故C项排除；根据第三段第二句“…people thought that each part of the brain controlled a different activity．”可知，B项错误。故选D。
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