读图方法：从实心圆点开始，顺着曲线念，一直到该曲线终结为止。观察带有文字的图大约三到五遍，即可利用不带文字的思维导图进行复述甚至背诵。
特别提示：对特别长的课文，看着思维导图能够流利地复述课文就可以了。当然，也可以把各个局部先背下来，然后贯通背诵。
课文原文：
Perhaps the most extraordinary building of the nineteenth century was the Crystal Palace, which was built in Hyde Park for the Great Exhibition of 1851. The Crystal Palace was different from all other buildings in the world, for it was made of iron and glass. It was one of the biggest buildings of all time and a lot of people from many countries came to see it. A great many goods were sent to the exhibition from various parts of the world. There was also a great deal of machinery on display. The most wonderful piece of machinery on show was Nasmyth's steam hammer. Though in those days, traveling was not as easy as it is today, steam boats carried thousands of visitors across the Channel from Europe. On arriving in England, they were taken to the Crystal Palace by train.There were six million visitors in all, and the profits from the exhibition were used to build museums and colleges. Later, the Crystal Palace was moved to South London. It remained one of the most famous buildings in the world until it was burnt down in 1936.
以下为纯思维导图：
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