问答题

Sporting activities are essentially modified forms of hunting behavior.Viewing biologically, the modern footballer is revealed as a member of a disguised　1．_______hunting pack. His killing weapon has turned into a harmless footballand his prey into a goal-mouth. If his aim is inaccurate and he scores a goal,　　　2．_______enjoys the hunter’s triumph of killing his prey.　　　　　　　　　　　　　　　　　 3．_______　　To understand how this transformation has taken place wemust briefly look up at our ancient ancestors. They spent over a million　　　　　　4．_______year evolving as co-operative hunters. Their very survival depended on success　　　5．_______in the hunting-field. Under this pressure their whole way of life, even if their　　6．_______bodies, became radically changed. They became chasers, runners, jumpers,aimers, throwers and prey-killers. They co-operate as skillful male-group　 　　　　7．_______attackers.　　Then, about ten thousand years ago, when this immensely long formative　　　　　8．_______period of hunting for food, they became farmers. Their improved intelligence,so vital to their old hunting life, were put to a new use—that of penning,　　　 　9．_______controlling and domesticating their prey. The food was there on the farms,awaiting their needs. The risks and uncertainties of farming were no longer　　　　10．_______essential for survival.