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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热门试题

单项选择题

According to the author, three design types of previous researches are ______.

A．interrelated to one another
B．supplementary to one another
C．to be modified considerably
D．to be integrated into one design

单项选择题

According to the second paragraph, a baby's first noises are

A．a sign that he means to tell you something
B．a reflection of his moods and feelings
C．an imitation of the spoken of adults
D．an early form of language