While Keyssar might have spent more time develop-ing the implications of his findings on joblessness for contemporary public policy, his study, in its thorough research and creative use of quantitative and qualitative evidence, is a model of historical analysis.

　　1. The passage is primarily concerned with

　　 recommending a new course of investigation

　　 summarizing and assessing a study

　　 making distinctions among categories

　　 criticizing the current state of a field

　　 comparing and contrasting two methods for calculating data

　　2. The passage suggests that before the early 1970s, which of the following was true of the study by historians of the working class in the United States?

　　 The study was infrequent or superficial, or both.

　　 The study was repeatedly criticized for its allegedly narrow focus.

　　 The study relied more on qualitative than quantitative evidence.

　　 The study focused more on the working-class community than on working-class culture.

　　 The study ignored working-class joblessness during the Great Depression.

　　3. According to the passage, which of the following is true of Keyssars findings concerning unemployment in Massachusetts?

　　 They tend to contradict earlier findings about such unemployment.

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