Read the following passage and decide which answer best fits each space. For questions 26-45, mark one letter A, B, C or D o

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问题     Read the following passage and decide which answer best fits each space.
    For questions 26-45, mark one letter A, B, C or D on the Answer Sheet.
Participation【C1】______high school sports is not a constitutional right.【C2】______. it is a privilege, paid for by taxpayers, open to students who promise to【C3】______certain conduct requirements on and off the field. One of these promises is to【C4】______from using drugs. Drug use is a serious problem among high school students. Studies show that as many as 500, 000 high school students use muscle-pumping, life-destroying substances such as steroids. Many more use illegal drugs,【C5】______cause discipline problems and【C6】______the stage for lifelong【C7】______.
    Drug testing works to【C8】______and identify use. That is why drug testing is required to compete in the Olympics, the National Collegiate Athletic Association and the National Football League.【C9】______drug testing was instituted by these organizations, use of performance-【C10】______drugs has been greatly reduced. We should want【C11】______in schools.
    Indeed, many athletes【C12】______testing programs, and no wonder. Without testing, athletes have to choose between drug use and a competitive disadvantage【C13】______the field.
    Those who challenge the need for drug testing may be forgetting【C14】______it is like be an adolescent. Peer pressure is enormous, and one of the few effective counter-weights is the fear of being caught. More importantly, once drug use is【C15】______, a school can【C16】______to the student before he or she gets addicted or arrested.
    For 25 years, public schools【C17】______by federal judges and civil libertarians, with results everyone can see. It is time【C18】______decisions on how to run public schools locally【C19】______officials. There is nothing unconstitutional about asking those who gain the advantages of school-sponsored athletics to contribute to the safety of other players, the integrity of the game and their own well-being. The Supreme Court should leave these programs【C20】______.
【C4】

选项 A、release
B、relieve
C、refrain
D、protect

答案C

解析 考点:词义辨析。分析:本题4个选项的意思分别是:A.release sb.from sth.“把某人从某事物中彻底解脱出来”;B.relieve(sb.of sth.)“使某人从某事中得到缓和、减轻”;C.refrain(fromsth.)“控制、抑制做某事”;D.protect(sb.From/against sth.)“保护、保卫某人(某事物)”。只有选项C.refrain既符合题意又符合语法要求,代入句中该句意为“其中的一项便是保证能克制不使用药品”,故该选项正确。
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