The first calender 最早的日历
Future historians will be in unique position when they come to record the history of our own times. They will hardly know which facts to select from the great mass of evidence that (steady) accumulates. What is more, they will not have to rely solely on the ( write)word. Films, videos, CDs and CD-ROMS are just some of the bewildering amount of information they will have. They will be able, as it were, to see and hear us in action. But the historian attempting to reconstruct the distant past is always ( face)with a difficult task. He has to deduce what he can from the few scanty clues available. Even seemingly insignificant remains can shed interesting light on the history of early man.
Up to now, historians have assumed that calendars came into being with the advent of agriculture, for then man was faced with a real need to understand something about the seasons. Recent scientific ( evident)seems to indicate that this assumption is incorrect.
Historians have long been (puzzle)by dots, lines and symbols which have been engraved on walls, bones, and the ivory tusks of mammoths. The nomads who made these markings lived by (hunt)and fishing during the last Ice Age which began about 35,000 B.C. and ended about 10,000 B.C. By correlating markings made in (variety) parts of the world, historians have been able to read this difficult code. They have found that it is (connect)with the passage of days and the phases of the moon. It is, in fact, a primitive type of calendar. It has long been ( know) that the hunting scenes depicted on walls were not simply a form of artistic expression. They had a definite meaning, for they were as near as early man could get to writing. It is possible that there is a definite relation between these paintings the markings that sometimes accompany them. It seems that man was making a real effort to understand the seasons 20,000 years earlier than has been supposed.
