Which of the following statements about labor unions can be concluded based on the inf

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Which of the following statements about labor unions can be concluded based on the information in the passage?

A. Labor unions reached their peak of power in the 1986's.

B. It. took labor unions many years to improve conditions for workers.

C. The early labor unions failed .because they were not concerned with the well-being of workers.

D. The early labor unions failed because they could not agree on what they wanted to fight for.

参考答案:

B此题是对主题思想的推理判断。其中concluded...based on the passage为关键词语。它要求读者避开过于细节性的选择,也不能选择过于笼统的答案,致使选项中包含的内容超越文章的范围。读者应抓住情节用排除法将与文章不相干的A(1986's工会鼎盛),C(不关心工人福利),D(未达成一致奋斗目标)选项排除掉。只有B项“工会经过多年(1869-1930)努力奋斗才改善了工人的工作条件”与文章内容一致。