The idea seems sort of foolish, just another exercise trick. Stand for a few minutes on a platform that vibrates. Get off and tr

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问题     The idea seems sort of foolish, just another exercise trick. Stand for a few minutes on a platform that vibrates. Get off and try to do some weight lifting. Or see how high you can jump. You are【C1】________supposed to be able to lift heavier weights and jump higher.
    But maybe it’s not so【C2】________, exercise experts say. Although they don’t really know why vibrations should work, researchers report that they actually seem to slightly improve【C3】________in the few minutes after a person gets off the machine.
    The problem,【C4】________, is that there is little【C5】________on how fast the vibrations should be or in what direction platforms are 【C6】________to vibrate. Some studies have【C7】________to show any effects from vibrations. And then there is the question of【C8】________exactly vibrations are doing to muscles and nerves.
    "It【C9】________is arousing interest, and a large portion of the【C10】________would support that something is happening," said Lee E. Brown, an expert at California State University. But he added, "We are still trying to【C11】________exactly what the mechanism is."
    Meanwhile, several companies make the vibrating platforms, and they are being used at gyms and【C12】________ some athletes. One company, Power Plate,【C13】________ that stars like Serena Williams and Justin Morneau, of the Minnesota Twins, train with its【C14】________. Another company, Wave, says the United States ski team used its vibrating plates in training【C15】________the coming Winter Olympics.
    But researchers are【C16】________. "There is something to it," said William J. Kraemer, a professor at the University of Connecticut,【C17】________it "another tool" for athletic conditioning. But he added that other conditioning methods might【C18】________the same or better results. Researchers say, people should be appropriately skeptical about the effects of standing on a vibrating platform. "We don’t know a lot about prescribing it," Dr. Kraemer said. "There’s the【C19】________. Research is trying to【C20】________up."
【C14】

选项 A、instrument
B、device
C、equipment
D、appliance

答案B

解析 上下文语义题及近义词辨析。该段首句的several companies和空格所在句中的one company是由总到分的关系,既然首句讲的是关于振动机(vibrating platforms)的使用问题,那么此处应该依旧讲振动机的使用情况,空格处的名词需能指代振动机。device指为某一特殊用途或解决某一特定机械问题而设计或改装的精巧的仪器或装置,振动机是为了运动而设计的装置,故device填入文中最贴切。A项instrument尤指电工仪表、测量装置,航海或航空用的控制装置。C项equipment为成套的或重型的设备或装备。D项appliance侧重指家用机器或设备,尤指家用电器。这三个均不能准确指代振动机,故排除。
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