Most people agree that fencing ( 击剑) is one sport in which a person must be at least 30 years old before he learns all he needs to know about the sport 1 . Clark Summers of the University of Detroit 2 that this doesn't always have to be 3 . Clark is a different kind of fencer in a lot of 4 . He is American, while most fencers are from the 5 of Europe. He is black while most fencers in the past have been 6 . And he is 7 22 years old. Many people 8 that Clark is the most promising fencer in this country today. Although he is young, he has been able to 9 the necessary skills. Already he has won a number of fencing contest ( 竟赛) 10 older fencers. He is almost 11 to become a member of the U. S. Olympic(奥林匹克 ) fencing team! "There is no 12 danger in fencing, today, Clark says. "But I never 13 that fencing was not always a sport. In the old days, People fenced to 14 a quarrel. Each match was a matter of 15 .If that 16 true in the matches I 17 in today, every touch against me would mean that I 18 wounded or killed. So I try to play 19 . l were fencing for my life. I don't like, the idea of being 20 ! "