阅读下面材料,在空白处填入适当内容(1个单词)或括号内单词的正确形式。
It is reported that many
middle school students are just not getting enough sleep, especially during the
school week. The problem seems to get {#blank#}1{#/blank#} (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 {#blank#}2{#/blank#} (problem) in a student's life. Many
students fall {#blank#}3{#/blank#} (sleep) in school or while doing their homework, so it
is not {#blank#}4{#/blank#} (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 {#blank#}5{#/blank#} (happy) and nervous, 73% don't get enough sleep at
night.
Why aren't students
getting enough sleep? Many students have one of the {#blank#}6{#/blank#} (follow) things,
like telephone, television, or computer in their bedrooms. {#blank#}7{#/blank#} (use) them
on a school night not only takes their time away from homework, but also makes {#blank#}8{#/blank#}
difficult for them to sleep. As a result, many students can't sleep before 11
p. m., yet they must get up early {#blank#}9{#/blank#} (go) to school.
Scientists also suggest
students should not do exciting activities for an hour {#blank#}10{#/blank#} bedtime.