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[判断题]
There is no difference between data retrieval and information retrieval.()
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A.areas
B.countries
C.religions
D.cultural backgrounds
The experiments demonstrate that__________ .
A.nearly every individual will behave differently from others
B.group pressure is caused by the interference of the psychologists
C.psychologists wish to change the people’s judgments and opinions
D.people will change their ideas under group pressure