to stay up to let me in just give me a key.[ ] A．There’s no need for you B．You needn’t have C．You are unnecessary D．It doesn’t need 题目和参考答案——青夏教育精英家教网—

题目内容

______ to stay up to let me in just give me a key.

[　　]

A．There’s no need for you

B．You needn’t have

C．You are unnecessary

D．It doesn’t need

答案：A

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　　As Christmas is coming, there are presents to be bought, cards to be sent, and rooms to be cleaned. Parents are filled with 1 jobs of hiding presents from 2 young children. If the gifts are large, this is sometimes a real 3 . On Christmas Eve, young children find the excitement almost unbearable（不可忍受的）. They are 4 between the wish to go to bed early so that Father Christmas will 5 their presents quickly, and the wish to stay up late so that they will not miss the fun. The wish for gifts usually proves 6 . But though children go to bed early, they often lie awake in bed for a long time, hoping to 7 Father Christmas.

　　Last Christmas, my wife and I 8 managed to hide a few large presents in the storeroom. I 9 the moment when our son, Jimmy, would ask me where the new bike had come from, but 10 he did not see it.

　　On Christmas Eve, it took the children hours to go to sleep. It must have been nearly 11 when my wife and I went quietly into their room and began 12 stockings. Then I 13 in the bike for Jimmy and left it beside the Christmas tree. We knew we would not get much 14 that night, for the children were sure to get up early. At about five o'clock the next morning, we were 15 by loud sounds coming from the children's room--they shouted excitedly! 16 I had time to get out of bed, Jimmy came 17 into our bedroom on his new bike, and his sister, Mary, 18 close behind, pushing her new baby carriage. Even the baby arrived, he moved on the 19 and knees into the room dragging a large balloon behind him. Suddenly it 20 . That woke us up completely. The day really begun with a bang.

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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 these sleepyhead 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.

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 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.”

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

The underlined phrase “nod off” most probably means “ _______”.

A. turn around B. agree with others C. fall asleep D. refuse to work

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.

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.

Many of your classmates dislike having to stay up late doing their lessons, _____?

A. do they B. have they C. don’t they D. haven’t they

根据汉语注释，在下列句子的空白处写出各单词的正确形式，每空一词。

1.I started getting better. My friends noticed a change in my ____________(态度).

2.The buildings in the exhibit include the World Trade Center in New York that was ____________(毁坏) in the terrorist attacks.

3.I like to stay up until ____________(午夜) or even later on my natural clock.

4.It was not possible to travel ____________(直通的；直接地) through because of the Rocky Mountains and the deep snow that fell in winter.

5.She often spoke about the problems of women trying to ____________(成功)in a world mainly controlled by men.

6.Experts say the best way to prevent the diseases carried by mosquitoes is not to be ____________(叮咬) by one.

7.He was a member of the ____________(设计) team and became chief engineer of the building project in eighteen sixty-seven.E:\ZuJuan\WCFUpload\Upload\Program Files\Youdao\Dict\5.3.40.8020\resultui\queryresult.html

8.Both of those industries ____________(雇佣) high percentages of women.

9.The conference centered on three main problems to getting and keeping girls in school: violence,poverty and poor ____________(素质) education.

10.But this is a ____________(精选; 大选) group of people that can handle or process or engage in these types of activity.

RIDING in school buses in the early morning，then sitting in poorly lit classrooms，are the main reasons students have trouble getting to sleep at night，according to new research．

Teenagers，like everyone else，need bright light in the morning to allow their circadian rhythms(生理节奏)to get into step with nature's cycles of day and night．

If they don't get blue 1ight in the morning，they get to sleep an average of six minutes later at night，until their bodies are completely out of sync(同步) with the school day，researchers from Rensselaer Polytechnic Institute in New York said last month．

The finding was made by fitting goggles(护目镜)that block blue light from the sun to a group of students．The researchers discovered that their circadian rhythms were greatly affected．

Parents and teachers have been complaining in recent years that teens stay up too late at night，then fall asleep in class the next morning and do poorly in school．The new findings provide a possible explanation for the problem．

At the root of the research is the circadian rhythm, the body's natural sleep and waking cycle．Even though the Earth makes a full rotation(旋转)in 24 hours，the body's circadian cycle is about 24 hours and six minutes 1ong．The cycle is mediated(调节)by a chemical called melatonin(褪黑激素)．The body starts to produce it about two hours before it is time to sleep and, in the absence of blue 1ight，the body produces about six minutes later each day.

In the study, the researchers studied 11 students at Smith Middle School in New York, which was designed so that a lot of sunlight reaches classrooms．

On a Friday night，the researchers measured what time the 11 students’ bodies began releasing melatonin．On Monday morning，the students were sent to school with orange goggles that blocked most blue light from their eyes to mimic(模拟) the conditions found in many---if not most--schools．

By the end of the week，the students were releasing melatonin 30 minutes 1ater in the evening---an average of six minutes a day--and going to sleep correspondingly(相应的) later．

“This is our first field study，”said lead author Mariana G．Figueiro．He said they would like to repeat it in larger studies and for longer periods of time。

If the findings are repeated，a variety of solutions are available．Ideally, new schools would be built to allow more natural sunlight into the classrooms．Students could also be exposed to more sunlight outside．

68. According to the findings related in this article, many teenagers stay up late because_______

A. they lack melatonin in their bodies

B. they have to get up so early to catch the school bus

C. their circadian rhythms are in disorder

D. they do not get enough blue light in the morning

69. According to the findings, a student who normally slept at 10:00 pm, but who spent 10 days in a poorly lit classroom, would probably be falling asleep at___________after the period.

A. 12:00pm B. 11:30pm C. 11:00pm D. 10:00pm

70. What does the article tell us?

A. Unlike adults, teenagers tend to feel sleepy during daytime.

B. The sunlight is the only thing that can affect our circadian rhythms.

C. If the findings prove correct, solutions could be found to teen sleeping problems.

D. Most schools have small windows and the classrooms are poorly lit.

71. The main point of the article is to___________

A. warn teenagers not to stay up late or sleep in class

B. report on some new findings related to teenagers' sleeping problems

C. give suggestions on how to build schools

D. advertise goggles which can protect the eyes from the sun

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