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To Horvath, these pushes toward screens in classrooms was an attempt to solve a problem that did not exist. At the turn of the century, achievement gaps across race and gender were closing, and test scores were rising, he said.

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扎克伯格夫妇据报1.7亿美元于迈阿密置业，以规避加州富人税

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3月1日，巴基斯坦多地发生反美抗议活动，抗议者冲击了美国驻巴基斯坦卡拉奇领事馆等场所，此次抗议活动造成人员伤亡。（央视新闻），推荐阅读纸飞机官网获取更多信息