单项选择题

Participation in high school sports is not a constitutional right (62) , it is a privilege, paid for by taxpayers, open to students who promise to (63) certain conduct requirements on and off the field. One of these (64) is to refrain (抑制) from using drugs.
Drug (65) is a serious problem among high school students. Studies show that as many as 500,000 high school students use muscle-pum ping, life-destroying (66) such as steroids (类固醇). Many more use illegal drugs, which cause discipline problems and (67) the stage for lifelong addictions.
Drug testing works to prevent and (68) use. That is why drug testing is required when athletes compete in the Olympics and the National Football League. (69) drug testing was instituted by these organizations, use of performance-enhancing drugs has been greatly (70) . We should want nothing (71) in schools. (72) , many athletes support testing programs. (73) testing, athletes have to choose between drug use and a competitive (74) on the field.
Those who challenge the need for drug testing may be forgetting (75) it is like to be an adolescent. Peer pressure is enormous, and one of the few equal factors is the (76) of being caught. More importantly, (77) drug use is identified, a school can reach out to the students before he or she gets addicted till arrested.
For 25 years, public schools have been run by (78) judges. It is time to return decisions on how to run public schools to locally responsible officials. There is (79) . unconstitutional about asking those who gain the advantages of school-sponsored athletics to (80) to the safety of other players, the integrity of the game and their own well-being. The Supreme Court should leave these programs (81)

81（）

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