40. In the eyes of the researchers the percentages given in the last paragraph ________.

　　A. are somewhat inaccurate

　　B. are pretty small

　　C. are rather high

　　D. are quite unbelievable

　　第三篇

　　The Iceman

　　On a September day in 1991, two Germans were climbing the mountains between Austria and Italy, high up on a mountain pass, they found the body of a man lying on the ice. At that height (10,499 feet, or 3,200 meters), the ice is usually permanent, but 1991 had been an especially warm year. The mountain ice had melted more than usual and so the body had come to the surface.

　　It was lying face downward. The skeleton(骨架) was in perfect condition, except for a wound in the head. There was still skin on the bones and the remains of some clothes. The hands were still holding the wooden handle of an ax and on the feet there were very simple leather and cloth boots. Nearby was a pair of gloves made of tree bark (树皮) and a holder for arrows.

　　Who was this man? How and when had he died? Everybody had a different answer to these questions. Some people thought that it was from this century, perhaps the body of a soldier who died in World War I, since several soldiers had already been found in the area. A Swiss woman believed it might be her father, who had died in those mountains twenty years before and whose body had never been found. The scientists who rushed to look at the body thought it was probably much older,maybe even a thousand years old.

　　With modern dating techniques, the scientists soon learned that the Iceman was about 5,300 years old. Born in about 3300 BC, he lived during the Bronze Age in Europe. At first scientists thought he was probably a hunter who had died from an accident in the high mountains. More recent evidence, however, tells a different story. A new kind of X-ray shows an arrowhead still stuck in his shoulder. It left only a tiny hole in his