阅读理解。
It is reported that many middle school students are just not getting enough sleep, especially during the
school week. The problem seems to get worse 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 problems in a student's life. Many students fall
asleep in school or while doing their homework, so it is not surprising 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 unhappy and nervous, 73％ don't get enough sleep at night. Why aren't students
getting enough sleep?Many students have one of the following things, like telephone, television, or computer,
in their bedrooms.Using them on a school night not only takes 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 P.m.., yet they must
get up early to go to school.
Scientists also suggest students should not do exciting activities for an hour before bed time.
1. According to the report, who might get the most sleep?
A. Year 7 students.
B. Year 8 students.
C. Year 9 students.
D. Year 10 students.
2. How many hours of sleep do middle school students need each night?
A. Seven hours.
B. Nine hours.
C. Ten hours.
D. Twelve hours.
3. Not getting enough sleep can cause the following problems EXCEPT ______.
A. falling asleep in class
B. getting lower grades
C. falling asleep while doing homework
D. getting fatter and fatter 60.What might be the best tit
4. What might be the best title for the passage?
A. Early to Bed, Early to Rise
B. Students' Life at Sehool
C. Students Don't Sleep Enough
D. How to Get Enough Sleep