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It's a scene repeated in households coast-to-coast. First...Then our kids turn it off and go back to sleep until, as Marty McFly so famously declared in 'Back to the Future': "I'm late for school!" But wait, the new Rand Corporation study finds that starting school later would be a good thing. Resulting, it finds, in higher academic performance and get this, reduced car crash rates and that it would improve public health and the economy. Concluding that delaying the sound of this could, believe it or not, pump more than $9 billion into the economy every year! Gary Baumgarten, FOX News. 来自:VOA英语网 文章地址: http://www.tingvoa.com/html/20180306/540333.html