A．to know more about the mass and properties of the first stars of the universe

　　B．to simulate the process of how the early universe began

　　C．to apply the simulation to the study of nuclear reaction initiation

　　D．to discover the truth about the formation of a protostar

　　第二篇

　　The Iceman

　　On a September,day in 1991，two Germans were climbing the mountain between Austra and Ita． 1y．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 iust usual and so the body had come to the surface．It was lying face downward．The skeleton(骨架)was in perfect condition except a wound on the head．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 the 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 this area．A Swiss woman who 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 modem dating techniques，the scientists soon learned that the iceman was about 5，300 years old．Born in about 3300 B．C．，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