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.
【答案解析】解析：考查动词短语辨析。本句instead表示转折，暗示试验结果与预期的不同，end up doing意为“(出乎意料)以做…告终”，符合题意，即研究最终却提出了以所在地命名的“霍桑效应”。end at“在某个时间结束”，end with“以…结束”，end off“结束，终止”，均不符合语义逻辑。因此B．up正确。
单选题
【C3】
【正确答案】
C
【答案解析】解析：考查名词辨析。这里的that引导了一个同位语从句，目的是解释extremely。influential idea，空后的of being experimented upon是后置定语，very在这里是形容词，意思是“恰好是，正是”，因此只有C．act符合语境，指“被用来做实验的行为”。truth“事实”，sight“情景，景象”，proof“证据”，均不符合题意。
【答案解析】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。
【答案解析】解析：考查上下文理解及形容词辨析。本句主干为An awareness…seemed to be______ to alter workers’behavior…。显然是说，工人们意识到自己就是被实验的对象，而这种意识就足够改变他们的行为。因此选C．enough。suitable“合适的”，excessive“过多的，过度的”，abundant“丰富的，充裕的”，均不符合语境。
【答案解析】解析：考查动词辨析。下文说的是工人一周的表现变化——在前几天会很勤奋，经过一个稳定期后，在一周的末尾就会懒散下来。显然这是一种无形的规律，因此选B．tended，tend to do sth．“倾向于做某事”。attempt“尝试”；choose“选择”；intend“打算，想要”，均不符合语境。