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					Does this cause them difficulties when they find themselves in mixed groups? 出自-2013年12月听力原文
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					By fifth grade, children with early attention difficulties had lower grades and reading achievement scores than their peers. 2018年12月六级真题(第一套)阅读 Section C
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					Our findings suggest that even more modest attention difficulties can increase the risk of negative academic outcomes. 2018年12月六级真题(第一套)阅读 Section C
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					The children we identified as having attention difficulties were not diagnosed with attention deficit hyperactivity disorder (注意力缺乏多动症, ADHD), although some may have had the disorder. 2018年12月六级真题(第一套)阅读 Section C
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					They found some evidence that some crude measures, like income inequality, correlated with changes in well-being, but economic measures with a more direct impact, like family income and unemployment rates which put families into difficulties, had no relat 2019年12月六级真题(第一套)阅读 Section B