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 shop-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 changes 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【C9】________to alter workers’ behavior【C10】________itself.
    After several decades, the same data were【C11】________to econometric analysis. Hawthorne experiments had 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】________interpretation of what happened.【C15】________lighting was always changed on 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 Monday, 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.
【C7】

选项 A、as far as
B、for fear that
C、in case that
D、so long as

答案D

解析 as far as(就……而言,直至,远至);for feat that(唯恐,害怕);in case that(万一,以防);so long as(只要)。句意:在实验中做什么并不重要;只要有所改变,劳动生产率就会提高。so long as表示“只要”,常用于引导条件状语从句,表明主句发生的动作以从句谈论的情况为前提。所以选项D为答案。
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