只用一本书提高英语听力能力!重温经典名著双语阅读小编推荐:跟着纪录片学英语不背单词和语法,轻松学英语
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[VOA慢速] VOA慢速精精听2019-01-30

提高英语听力能力 找对方法很重要!
XXX noted this study does lend support to the idea that sleeping enough help academic performance, in student who XXX are likely worse off. XXX is a common activate for American colleague students. When student XXX, they study most or all of the night before the exam. They get very little or no sleep because they think they will do better if the test material is fresh in their mind.
XXX said there are some problems with S experiment. He said to be more scientific, the students should have been randomly choosing to sleeping or stay in a way. Also the two groups should have been studying the same subject and taking the same test. All of this may have affected the result of the study.
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