Now go through TEXT quickly and answer questions 57 and 58.
　
Cotton was not exported to Europe until the eighth century A.D. It was brought to Spain then by the Moors of North Africa. The Europeans liked the textile and began to make cotton cloth. By the fifteenth century, the cotton industry had spread from Spain to central Europe and the Low countries.
　
When Columbus arrived in the West Indies, he found the Indians wearing cotton clothes. Pizarro, the Spanish conqueror of Peru, found that the Incas were growing cotton for use in the making of clothes. Magellan found the Brazilians swinging in cotton hammocks. And Cortes was so impressed by the beauty of the cotton tapestries and rugs that the Aztecs made, that he sent some of them as presents to King Charles II of Spain.
　
The Chinese were the first people to make silk clothing, and for more than 2000 years, they were the only people in the world who knew how to make silk. The Chinese guarded the secret of their silk manufacture carefully. Their merchants grew rich in the silk trade with other Asian countries and Europe. Silk, in fact, was so expensive that it was known as the "cloth of king".
　
During the region of Emperor Justinian of Constantinople, two Persian monks who lived in China brought silk worms to Europe. In the years that followed, Western Europeans learned how to grow silkworms and use the silk from the cocoons. Silk is still one of the most useful textile in clothing manufacture because of its extremely strong fibers. A thread of silk is two-thirds as strong as an iron wore of the same size and so smooth that dirt cannot cling to it easily.
　
Two hundred years ago, most of the people of the world had little or no clothing. Clothing was taken care of very carefully and handed down from parents to children. Many people never owned a new garment in their lives, and except for the rich, no on had more than one outfit of clothes at a time.
　
Primitive man made shoes long before he made permanent records on clay tablets or parchment scrolls. For many centuries, the shoemaker was interested only in covering the foot. Although he used fancy leathers and decorated shoes in many ways, he paid little attention to the fit of a shoe. In fact, it was only after 1850 that someone hit upon the idea of making different-shaped shoes for the left and the right foot.
　
TEXT K
First read the following questions.
59. Scurvy is a disease which causes ____
A. loss of blood.
B. swollen limbs.
C. exhaustion.
D. bright red spot on the flesh.
正确答案是

60. The disease "beriberi" ____
A. kills large numbers of western peoples.
B. is a vitamin deficiency disease.
C. is transmitted by diseased rice.
D. can be caught from diseased chickens. 
正确答案是