题目

The days of the hunter are almost over in India. This is partly because there is practically nothing left to kill, and partly because some steps have been taken mainly by banning tiger-shooting to protect those animals which still survive.    Some people say that man is naturally a hunter. I disagree with this view. Surely our earliest forefathers, who at first possessed no weapons, spent their time digging for roots, and were no doubt themselves often hunted by meat-eating animals.   I believe the main reason why the modern hunter kills is that he thinks people will admire his courage in o我国优秀运动员刘翔早2004雅典奥运会上勇夺110m跨栏金牌并打破奥运会记录，成绩是12.91s．他的平均速度是多少？