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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【B1】______workers’ productivity. Instead, the studies ended【B2】______giving their name to the "Hawthorne effect", the extremely influential idea that the very【B3】______of being experimented upon changed subjects’ behavior.
    The idea arose because of the【B4】______behavior of the women in the plant. According to 【B5】______of the experiments, their hourly output rose when lighting was increased, but also when it was dimmed. It did not【B6】______what was done in the experiment;【B7】______something was changed, productivity rose. A(n)【B8】______that they were being experimented upon seemed to be【B9】______to alter workers’ behavior【B10】______itself.
    After several decades, the same data were【B11】______to econometric analysis. Hawthorne experiments has another surprise in store.【B12】______the descriptions on record, no systematic【B13】______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【B14】______interpretations of what happened.【B15】______, lighting was always changed on a Sunday. When work started again on Monday, output【B16】______rose compared with the previous Saturday and【B17】______to rise for the next couple of days. 【B18】______, a comparison with data for weeks when there was no experimentation showed that output always went up on Mondays. Workers【B19】______to be diligent for the first few days of the week in any case, before【B20】______a plateau and then slackening off. This suggests that the alleged "Hawthorne effect" is hard to pin down.
【B7】
选项 A、as far as
B、for fear that
C、in case that
D、so long as
答案D
解析 考查上下文理解及短语辨析。上半句指出实验中做什么并不重要，后文自然是“只要”发生了某种变化，生产率便会提高，这也符合前文对于实验的描述，因此D．so long as“只有”符合题意，相当于as long as。as far as“根据，至于”，for fear that“以免，唯恐”，in case that“万一，如果”，均不符合语境。
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