A Brown University sleep researcher has some advice
for people who run high schools: Don’t start classes so early in the morning.
It may not be that the students who nod off at their desks are lazy. And it may
not be that their parents have failed to enforce(确保)
bedtime. Instead, it may be that biologically(生物学上)these
sleepyhead(贪睡者)students aren’t used to the early hour.
“Maybe these
kids are being asked to rise at the wrong time for their bodies,” says Mary
Carskadon, a professor looking at problem of adolescent (青春期的)sleep at Brown’s School of Medicine.
Carskadon is
trying to understand more about the effects of early school time in
adolescents. And, at a more basic level, she and her team are trying to learn
more about how the biological changes of adolescence affect sleep needs and
patterns(方式).
Carskadon
says her work suggests that adolescents may need more sleep than they did at
childhood, no less, as commonly thought.
Sleep
patterns change during adolescence, as any parent of an adolescent can prove.
Most adolescents prefer to stay up later at night and sleep later in the
morning. But it’s not just a matter of choice---their bodies are going through
a change of sleep patterns.
All of this
makes the transfer(迁移)from middle school to high school---which
may start one hour earlier in the morning----all the more difficult, Carskadon
says. With their increased need for sleep and their biological clocks set on
the “sleep late, rise late” pattern, adolescents are up against difficulties
when they try to be up by 5 or 6 a.m. for a 7:30 a.m. first bell. A short sleep
on a desktop may be their body’s way of saying. “I need a timeout.”
1.Carskadon suggests that high schools should not
start classes so early in the morning because _______.
A．it is really
tough for parents to enforce bedtime
B．it is
biologically difficult for students to rise early
C．students work
so late at night that they can’t get up early
D．students are
so lazy that they don’t like to go to school early
2.The underlined phrase nod off most probably means
_______.
A．turn around B．agree with
others C．fall asleep D．refuse to
work
3.What might be a reason for the hard transfer from
middle school to high school?
A．Adolescents
depend more on their parents.
B．Adolescents
have to choose their sleep patterns.
C．Adolescents
sleep better than they did at childhood.
D．Adolescents
need more sleep than they used to.
4.What is the test mainly about?
A．Adolescent
health care.
B．Problems in
adolescent learning.
C．Adolescent
sleep difficulties.
D．Changes in
adolescent sleep needs and patterns.
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