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Culture and DIscovery

Do we need more light?

作者:21ST
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学生晚睡是因为起得太早?

词数 433 建议阅读时间 7分钟 教案和课件见网站 测试见7版

RIDING in school buses in the early morning, then sitting in poorly lit classrooms, are the main reasons students have trouble getting to sleep at night, according to new research.
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