mental illness and genius are linked(联系)．

　　Dr. Adele Juda studied 5, 000 creative people in Germany. She found there were more people with mental illness in this group than in the general population. Poets had the highest rate(比例) of mental illness, followed by musicians, with lower numbers for painters and architects.

　　Other scientists did research which also showed a strong link between mental problems and creativity. But, it did nothing to explain it.

　　Dr. Ruth Richards of Harvard University made a breakthrough．Instead of studying creative people, she took a group of psychiatric(精神病的) patients and tested them for creativity. The patients got much higher scores than a normal group.

　　Also, the patients' close relatives were much more creative than the patients and a normal group. This suggests that the key to the link between creativity and mental illness is in our genes(基因)．

　　But this is a problem. According to Darwinism, harmful genes should be removed. Some scientists believe that evolution(进化) has created a balance, where the madness of a few people leads to the development of the whole human race.

　　Geniuses may be mad, bad or just difficult to understand, but their discoveries have improved the world we live in. It seems that a little creative madness is good for us all.

　　【语篇解读】　俗话说天才与疯子只有一线之隔，虽然疯子未必都是天才，但是天才却都有疯狂的创造力。

　　1．According to Dr.Adele Juda, which of the following group has the lowest rate of mental illness?

　　A．Painters.　　　　　 B．Musicians.

　　C．Poets. D．Bus drivers.

　　D　[推理判断题。第二段中的研究结果表明，在5 000名有创造力的人中，有精神疾病的人的数量比在等量普通人中的数量要多。在有病的人中诗人所占比例最高，其次是音乐家、画家、建筑家。故D项是患病比例最低的人。]

2．The underlined phrase"made a breakthrough"in the fourth paragraph means " "．