填空用一个与上下文匹配的单词。这是B2 First FCE阅读第二部分。有关如何解决任务的提示和解释,请访问B2 FCE阅读第二部分
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Sleep
We spend about a third [0] of our lives sleeping, yet scientists still do not fully understand (1) 我们 do it. Sleep is essential for our physical and mental health. (2) 一个 good night’s sleep, we struggle to concentrate and our mood is negatively affected. During sleep, the body repairs (3), and the brain processes the information (4) 已经 gathered during the day. Many people suffer (5) 失眠, which means they find (6) difficult to fall asleep. Experts recommend avoiding screens (7) 至少 an hour before going to bed in (8) to improve sleep quality.
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