They　5　that the Net would prove socially healthier than television, since the Net allows users to choose their information and to communicate with others.

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【解析】选[N]。此处缺少动词，根据上句的were可知，此处应填动词的过去式，故[B]required和[N]expected入选。此处是说专家的原来的预测：和看电视相比，从社交角度来说，上网可能更健康一些，因为网络允许使用者选择自己需要的信息并且和别人进行交流，故答案为[N]。

1 The fact that Internet use　6　time available for family and friends may account for the drop in well-being,

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2 bodiless "virtual" communication may be less psychologically　7　than actual conversation,

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3 Another possibility is that　8　to the wider world via the Net makes users less satisfied with their lives.

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