What Does Lack of Sleep Cause? 【C1】______ (reduce)the amount of sleep students get at night has a direct influence on their【

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问题                     What Does Lack of Sleep Cause?
    【C1】______ (reduce)the amount of sleep students get at night has a direct influence on their【C2】______(perform)at school during the day. According to teachers,【C3】______(element)and high school students who stay up late exhibit more【C4】______(learn)and attention problems. This has been shown by Brown Medical School and Bradley Hospital research. In the study, teachers were not told the amount of sleep students received when completing【C5】______(week)performance reports, yet they rated the students who had received eight hours or less as having the most trouble【C6】______(recall)all the material. Teachers also reported that these students had more difficulty【C7】______(pay)attention. The experiment is the first to ask teachers to report on the effects of sleep【C8】______(deficient)in children. Just staying up late can cause increased academic difficulty and attention problems for otherwise【C9】______(health), well-functioning kids, said Garharn Forlone, the study’ s lead author. So the results provide professionals and parents with a clear message: when a child is having learning and attention problems, the issue of sleep has to be taken into【C10】______(consider). "If we don’t ask about sleep, and try to improve sleep patterns in kids’ struggling academically, then we aren’ t doing our job" , Forlone said. For parents, he said, the message is simple, "getting kids to bed on time is as important as getting them to school on time".
【C1】

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答案Reducing

解析 本句空白处放在句首,分析句法得出本句主语不完整。因此,把提示词动词reduce去掉尾字母一e加上一ing改成动名词reducing作主语。由于该词出现在句首,在拼写的时候注意首字母大写。
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