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What had the researchers expected before the research?



A)
The Net may account for the drop in psychological health.
B)
Internet use may improve social health.
C)
Internet use has nothing to do with social health.
D)
Spending much time on the Internet makes people feel bad and lonely.

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出自：华北水利水电大学-水利水电建筑工程-大学英语2

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