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A．institutional
B．professional
C．universal
D．fundamental
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单项选择题The passage is mainly concerned with _______.

A．application of analogy in studying juvenile delinquency
B．a research design concerning juvenile delinquency
C．significance of juvenile delinquency
D．an extensive survey of researches in juvenile delinquency

单项选择题In the first paragraph, the author draws an analogy between _______.

A．doing research and drawing a picture
B．research finding and pictures perspective
C．designing a research and making a quick drawing
D．a researcher and a painter