People open it so that they go inside.
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[要求] 概括准确，分析合理，语言简练，不超过300字。
What have mobile phones become according to research about their users？
What feelings does the writer suggest in the first paragraph about our attitudes to mobile
估价师接受估价业务后,首先必须决定估价的基本项目,主要包括的内容？
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