2. 外语
  3. Participation in high school sports is not a constitutional right.【C1】______. it is a privilege, paid for by taxpayers, open to

Participation in high school sports is not a constitutional right.【C1】______. it is a privilege, paid for by taxpayers, open to

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问题     Participation in high school sports is not a constitutional right.【C1】______. it is a privilege, paid for by taxpayers, open to students who promise to【C2】______certain conduct requirements on and off the field. One of these【C3】______is to refrain (抑制) from using drugs. Drug【C4】______is a serious problem among high school students. Studies show that as many as 500,000 high school students use muscle-pumping, life-destroying【C5】______such as steroids (类固醇). Many more use illegal drugs, which cause discipline problems and【C6】______the stage for lifelong addictions.
    Drug testing works to prevent and【C7】______use. That is why drug testing is required when athletes compete in the Olympics and the National Football League. 【C8】______drug testing was instituted by these organizations, use of performance-enhancing drugs has been greatly【C9】______. We should want nothing【C10】______in schools.
    【C11】______. many athletes support testing programs. 【C12】______testing, athletes have to choose between drug use and a competitive【C13】______on the field.
    Those who challenge the need for drug testing may be forgetting【C14】______it is like to be an adolescent. Peer pressure is enormous, and one of the few equal factors is the【C15】______of being caught. More importantly, 【C16】______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【C17】______judges. It is time to return decisions on how to run public schools to locally responsible officials. There is【C18】______unconstitutional about asking those who gain the advantages of school-sponsored athletics to【C19】______to the safety of other players, the integrity of the game and their own well-being. The Supreme Court should leave these programs【C20】______.
【C8】
选项 A、While
B、Since
C、Until
D、When
答案B
解析 结构衔接题。根据后面所说的“药物使用已经大大……”，这一情况是在药物测试实施之后  才出现的，而且后半句用的是现在完成时，故答案为[B]Since。since意为“自从……”，常跟完成时态连用。  
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大学英语四级

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