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  3. In 1924 America’s National Research Council sent two engineers to supervise a series of industrial experiments at a large teleph

In 1924 America’s National Research Council sent two engineers to supervise a series of industrial experiments at a large teleph

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问题     In 1924 America’s National Research Council sent two engineers to supervise a series of industrial experiments at a large 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】______to being experimented upon changed subjects’ behavior.
    The idea arose because of the【C4】______behavior of the women in the Hawthorne 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 enough to alter workers’ behavior by itself.
    After several decades, the same data were【C9】______to econometric the analysis. Hawthorne experiments has another surprise store【C10】______the descriptions on record, no systematic evidence was found that levels of productivity were related to changes in lighting.
    It turns out that peculiar way of conducting the experiments may be have let to【C11】______interpretation of what happened. 【C12】______, lighting was always changed on a Sunday. When work started again on Monday, output duly rose compared with the previous Saturday and 【C13】______to rise for the next couple of days. But a comparison with data for weeks when there was no experimentation showed that output always went up on Monday, workers【C14】______to be diligent for the first few days of the week in any case, before【C15】______a plateau and then slackening off. This suggests that the alleged "Hawthorne effect" is hard to pin down.
【C14】
选项 A、attempted
B、tended
C、chose
D、required
答案B
解析 tended解析：tend to do“倾向于做某事”，说明一种常规的事实。故答案为B。
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