＜正＞词数:525阅读难度:★★★☆☆建议阅读时间:6分钟It has long been believed that the smartphones in our pockets are actually making us dumber;but now there is evidence for it.The constant presence of a mobile phone has a"brain drain"effect that significantly reduces people’s intelligence and attention spans,a study has found.Researchers at the University of Texas discovered that people are worse at conducting tasks and remembering information if they have a smartphone within eye shot.In two experiments they found phones sitting on a
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