题目内容：

第五节：听短文，根据你所听到的内容填写出下面短文中所缺的信息。短文读三遍。（每空限填一词）注：请将此节的答案填写在答题卡非选择题的相应位置上。

 

Not getting enough sleep can cause problems in a student’s life. Many students fall 1. in class or while doing their homework, so they get 2. grades. Scientists suggest that the students should sleep about 3. hours a night. Why aren’t students getting enough sleep? Many students have one of the following 4., like a cellphone, television, or computer in their bedrooms. Using them on a school night not only 5. their time away from homework, but also makes it difficult for them to fall asleep. As a result, many students can’t fall asleep before 11 pm, yet they must get up early to go to school.