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.
Carskadon says her work suggests that adolescents may need more sleep than they did at childhood, no less, as
commonly thought.
Sleep patters change during adolescence, as any parent of an adolescent can prove. Most adolescents prefer
to stay up later at nigh and sleep later in the morning. But it’s not just a matter of choice –their bodies are going
through a change of sleep patters.
All of this makes the transfer 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, adolescent are up against difficulties when it conics to trying to be
up by 5 or 6 a.m. for a 7:30 a.m. first hell. A short sleep on a desktop may be their body’s way of saying. “I need a
timeout.”
48. 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
49. The underlined phrase “nod off” most probably means “ _______”.
A. turn around B. agree with others C. full asleep D. refuse to work
50. What might be a reason for the hard transfer 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.
51. What is the test mainly about?
A. Adolescent heath care. B. Problems in adolescent learning.
C. Adolescent sleep difficulties. D. Changes in adolescent sleep needs and patterns.
D
For a while, my neighborhood was taken ever by an army of joggers(慢跑者). They were there all the time:
early morning, noon, and evening. There were little old ladies in gray sweats, young couples in Adidas shoes,
middle-aged men with red faces. “Come on!” My friend Alex encouraged me to join him as he jogged by my
house every evening. “You’ll feel great.”
Well, I had nothing against feeling great and if Alex could jog every day, anyone could. So I took up jogging
seriously and gave it a good two months of my life, and not a day more. Based on my experience, jogging is the
most overvalued form of exercise around, and judging from the number of the people who left our neighborhood
jogging army. I’m not alone in my opinion.
First of all, jogging is very hard on the body. Your legs and feet a real pounding (追击)ruining down a road
for two or three miles. I developed foot, leg, and back problems. Then I read about a nationally famous jogger
who died of a heart attack while jogging, and I had something else to worry about. Jogging doesn’t kill hundreds
of people, but if you have any physical weaknesses, jogging will surely bring them out, as they did with me.
Secondly, I got no enjoyment out of jogging. Putting one foot in front of the other for forty-five minutes isn’t my
idea of fun. Jogging is also a lonely pastime. Some joggers say, “I love being out there with just my thoughts .”
Well, my thoughts began to bore me, and most of them were on how much my legs hurt.
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