单项选择题

The word "project" (Line 2, Para. 4) refers to "______".

A．a comprehensive study of juvenile delinquency
B．a full exploration of research designs
C．an extensive research on crime
D．a further investigation into new research techniques

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单项选择题

The major contribution of this study is to ______.

A．develop a new research technique easily transferred from one area to another
B．make a comprehensive analysis of juvenile delinquency
C．demonstrate the successful application of new research techniques in a new area
D．modify creatively the previous research finding of juvenile delinquency

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