It is reported that many middle school students are just not getting enough sleep，especially during the school week.The problem seems to get 1.

　　(bad) as they get older.Year 7 students sleep 8.4 hours in a school night，and Year 9 students only 6.9 hours.

　　It’s also reported that not getting enough sleep can cause 2.

　　(problem) in a student’s life.Many students fall 3.

　　(sleep) in school or while doing their homework，so it is not 4.

　　(surprise) that they get lower grades than those who get enough sleep.Scientists suggest nine hours a night for middle school students.

　　Of the students who feel 5.

　　(happy) and nervous,73% don’t get enough sleep at night.

　　Why aren’t students getting enough sleep? Many students have one of the 6.

　　(follow) things，like telephone，television，or computer in their bedrooms.Using them on a school night not 7.

　　takes their time away from homework，but also makes 8.

　　difficult for them to sleep.As a result，many students can’t sleep before 11 p．m，yet they must get up early 9.

　　(go) to school.

　　Scientists also suggest students should not do exciting activities for an hour 10.

　　bedtime.

　　【解题导语】　本文描述了一个普遍存在的现象。调查显示大部分青少年学生的睡眠时间不足，这是导致他们学习成绩差的原因之一。

【【高考调研】2017届高三英语一轮复习（外研版）课时规范训练8（含解析）】相关文章：

★ 【三维设计】2017届高考英语（江苏专用）二轮复习阅读理解解题技法示范课件：10

★ 2017届高考英语二轮复习书面表达限时测验：7（含解析）

★ 2017届高考英语二轮复习大题冲关秘籍完形填空之夹叙夹议文：体验真题（含解析）

★ 辽宁省辽阳市2014高考英语单项选择一轮（暑假）训练（13）附答案

★ 【三维设计】2017版（江苏专用）二轮复习练习：必修2 Unit 1《Tales of the unexplained》课时跟踪检测B卷（含解析）

★ 2017届高考英语二轮复习课时训练：13（含解析）

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ题型重组训练：第2组（含解析）

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 1 A卷 Word版含解析

★ 【课堂新坐标】2017届高考英语（通用版）二轮复习短文改错专题训练：考法3 行文逻辑错误（含解析）

★ 重庆市2014高考英语阅读理解一轮（精品）训练题（4）附答案