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  3. In 1924 America’s National Research Council sent two engineers to supervise a series of experiments at a telephone-parts factory

In 1924 America’s National Research Council sent two engineers to supervise a series of experiments at a telephone-parts factory

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问题     In 1924 America’s National Research Council sent two engineers to supervise a series of experiments at a telephone-parts factory called the Hawthorne Plant near Chicago. It hoped they would learn how stop-floor lighting【C1】______workers’ productivity. Instead, the studies ended【C2】______giving their name to the "Hawthorne effect", the extremely influential idea that the very【C3】______of being experimented upon changed subjects’ behavior.
    The idea arose because of the【C4】______behavior of the women in the plant. According to 【C5】______of the experiments, their hourly output rose when lighting was increased, but also when it was dimmed. It did not【C6】______what was done in the experiment;【C7】______something was changed, productivity rose. A(n)【C8】______that they were being experimented upon seemed to be【C9】______to alter workers’ behavior【C10】______itself.
    After several decades, the same data were【C11】______to econometric analysis. Hawthorne experiments has another surprise in store.【C12】______the descriptions on record, no systematic【C13】______was found that levels of productivity were related to changes in lighting.
    It turns out that the peculiar way of conducting the experiments may have led to【C14】______interpretations of what happened.【C15】______, lighting was always changed on a Sunday. When work started again on Monday, output【C16】______rose compared with the previous Saturday and【C17】______to rise for the next couple of days. 【C18】______, a comparison with data for weeks when there was no experimentation showed that output always went up on Mondays. Workers【C19】______to be diligent for the first few days of the week in any case, before【C20】______a plateau and then slackening off. This suggests that the alleged "Hawthorne effect" is hard to pin down.
【C20】
选项 A、breaking
B、climbing
C、surpassing
D、hitting
答案D
解析 考查动词辨析。plateau“稳定期，停滞期”，根据before的提示，此处应为“到达”停滞期。break“打破”，surpass“超越”不符语境，climb“攀爬”，不与plateau搭配，只能选择D．hitting，这里意为“进入到一个特定的时期”。故D．hitting为正确答案。
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