It is not unusual to see your desk-mate yawn (打呵欠) as he complains that he didn't have a good sleep the night before. Many teens don't get enough sleep because they have too much homework, which keeps them up at night. Some teens cannot sleep at night even when they want to.
Studies show that during your teenage years, the body's biological clock is reset, telling you to sleep later at night and wake up later in the morning.
But changes in the body clock aren't the only reason teens lose sleep. Lots of people have insomnia (失眠). The most common cause of insomnia is stress. But all sorts of things can lead to insomnia. These include physical discomfort, emotional troubles and even sleeping environment. It's common for everyone to have insomnia from time to time. But if it lasts for a month or more go and see a doctor.
Some people have a condition that causes stomach acid (酸) to move backward towards the chest. This produces the uncomfortable, burning feeling called heartburn. So even if the person doesn't notice the feelings of heartburn because he is sleeping, he may feel tired the next day.
Most teens have nightmares sometimes. But, if they are frequent, a person's sleep pattern can be seriously affected. The most common cause of nightmares is emotional problems, such as stress (壓力) or anxiety. If you have them a lot, it's a good idea to talk to a doctor.
Doctors encourage teens to make lifestyle changes to develop good sleeping habits. You probably know that coffee can keep you awake, but did you know that playing video games or watching TV does the same?
1. The main idea of the first paragraph is ________.
A. There is a problem that teenagers can’t get enough sleep.
B. Sleeping problems have different causes.
C. Yawning is a good way to get rid of sleep.
D. Teenagers care too much for homework.
2. The Teenagers’ biological clock ________.
A. easily makes teenagers lead to insomnia
B. is the origin of their insomnia
C. provides them with plenty of time at night
D. is helpful to improve their concentration(注意力)
3. What does the writer say about “nightmares”?
A. It is nothing and shouldn’t be taken seriously.
B. It can release their stress or anxiety.
C. Emotional problems are the only way to form nightmares.
D. People will suffer from sleep if frequent.
4. Which way can help to get rid of insomnia?
A. Drinking some coffee before going to bed.
B. Playing video game or watching TV from time to time.
C. Turning to a doctor for help.
D. Eating much medicine for insomnia.
 1-4 AADC
1.  第一段主要說(shuō)的是“青少年睡眠不足的原因，如作業(yè)多或想睡但是睡不著�！�
2.  由句子But changes in the body clock aren't the only reason teens lose sleep. 可知“生物鐘的變化能導(dǎo)致失眠”。
3.  由句子if they are frequent, a person's sleep pattern can be seriously affected. 可知“經(jīng)常做夢(mèng)，睡眠會(huì)受到影響”。
4.  由句子Doctors encourage teens to make lifestyle changes to develop good sleeping habits可知。
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解


A
Insomnia is the inability to fall asleep or sleep restfully. It is a problem to nearly everyone at some time .A person may be awake for an hour in the middle of the night and then , next morning, feel that he hardly sleep all night Normally, worry about not getting enough sleep is the worst aspect of most insomnia. If insomnia is recurrent, however, it is important to find its causes and try to correct them, with the help of a doctor if necessary.
Any of a large number of simple factors may take it difficult for someone to fall asleep or remain asleep. His matters may be too soft or too hard. If there are too many blankets on a hot night, he may be too warm; if the bedclothes are too light he may feel cold during the night. If it is not dark enough, or too noisy, this may cause difficulty in sleeping. Eating shortly before going to bed also be responsible for insomnia. Stimulating drinks, such as tea or coffee, can also keep people awake.
Inability to fall asleep is sometimes a symptom of emotional or mental disorders. Insomnia may also be caused by pain and, very rarely, it can be a symptom of a physical disease.
The cause of insomnia may be easy to correct. The sufferer should check the mattress, bedclothes and bedroom temperature, and make any necessary changes. An eye mask keeps out the night and ear-plugs shut out sound. He should relax for an hour or two before bedtime, perhaps by reading a book; watching TV, or taking a warm bath. If he wakes during the night he should try turning on the light and reading for a while. Taking warm milk and a biscuit or two may be helpful. Above all, he should try not to worry about sleeplessness when someone is tied enough he nearly always falls asleep.
If necessary, a doctor may prescribe tranquillizers or sleeping pills. Take only the dosage he prescribes; any more is dangerous.
1. According to the writer, insomnia is ______.
[ A ] a rare problem                 [ B ] a sign of illness
[ C ] a common complaint            [ D ] a modern disease
2. People who have difficulty sleeping should sleep in_____.
[ A ] a light room                   [ B ] a dark room
[ C ] a cold room                   [ D ] a warm room
3. Insomnia need’t be taken seriously because_______.
[ A ] people can catch on sleep during the day.
[ B ] many people sleep far too much.
[ C ]it can easily be cured by doctors.
[ D ]it is cured naturally by tiredness.
4. The main cure for insomnia is_____.
[ A ] not to read too much at night
[ B ]not to eat too much for supper
[ C ] not to watch too much television
[ D ] not to get too anxious about sleeping

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Some spiders hunt on the ground, others build webs to trap their food, but the grass water spider catches its prey by running along the surface of the water.
This special water spider lives on the grassy banks of streams where mosquitoes, damsel flies and other insects come to feed and breed.
Although it is one of the largest spiders in New Zealand, it has an unusual ability. It doesn’t disturb the water as it waits for its meal, and there is barely a ripple(波紋) when it skims(掠過(guò)) across the surface at lightning speed to catch its prey.
Grass water spiders deal swiftly with larger insects like damsel flies by pulling their heads under the water and holding them there until they drown.
After a meal, the grass water spider spends up to half an hour grooming(修飾) itself. It wipes its eight eyes, brushes its antennae(觸角), and takes special care to clean the hairs on its body.
It is the hairs that trap tiny bubbles(泡沫) of air so that the spider can run down a blade(葉片) of grass and stay underwater for up to an hour when it is frightened. The hairs also keep the spider dry, even underwater.
It is only when the female spider is caring for the young that she does not hunt on the water. After mating, she produces a large egg sac(囊), which she carries around for five weeks. Once the eggs start to hatch, she attaches the sac to some blades of grass or a thistle. She then tears the sac open and releases the tiny spiders into the nursery web.
小題1:How does the grass water spider kill its prey?
A．in a webB．by drowningC．by poisoning D．with its antennae
小題2:the writer describes the special spider as “special” because _______.
A．it walks on waterB．it has eight eyes　　
C．of its hairy appearanceD．of the way it produces its young
小題3:The passage tells us that the spider ______.
A．feeds grass and thistles to its young.　　　　
B．lives on blades of grass under the water
C．lives in the grass on the banks of streams　　
D．eats a meal once every five weeks
小題4:The purpose of the passage is to _______.
A．convince readers that spiders are dangerous　　
B．indicate that the grass water spider is endangered
C．list all of the spiders that can be found in New Zealand
D．describe the characteristics of the grass water spider

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Cyber Cafe computer centers are found in many cities around the world. Now, a few American high schools are opening these centers. For example, high school in the state of Maryland began operating a Cyber Cafe last March. All students at Bethesde-Chevy Chase High School in Bethesda can use the Cyber Cafe. But school officials say I especially helps students who have no computer or cannot use the Internet at home.  
The officials say thirteen percent of the students at the school are from poor families. Many student have arrived in the United States from poor families. Many students have arrived in the United States from other countries only recently. Students in the school’s program for learning English speak twenty-three other languages.
The idea for a Cyber Cafe at Bethesda-Chevy Chase High School began three years ago. A that time, officials were planning o restore the school building. Parents interested in technology proposed a Cyber Cafe.
They wanted this center even though schools in the area had suffered budget cuts. The community wanted to help. It wanted all students to have the best chances to learn.
Officials in the area supported the idea. So did an organization called the Bethesda-Chevy Chase High School Educational Foundation. The foundation includes parents, teachers, former students, and business, community and other leaders.
Over two years, the foundation collected money for a Cyber Cafe and other new computers. It received more than one hundred seventy thousand dollars. The Café now has sixteen computer, a printer and a device called a scanner . School official Ann Hengerer (HEN-grr-er) says students use the Internet to complete research. They also write homework and required papers on the computers. In addition, they can send and receive electronic mails. That is especially helpful for the many students who have family members in other nations.
The Cyber Cafe also serves a social purpose. Visitors can stop by for a drink of coffee, tee or hot chocolate. On Long Island, in School has six computers in is Cyber Cafe. One student at the school says students can start their homework even before they leave school.
小題1:What is mainly discussed in the passage?
Cyber Cafe computer centers in many cities around the world
High school Cyber Cafe
Cyber Cafe at Bethesda-Chevy Chase High School  
Cyber Cafe at Walter G. 0’Connell Copiague High School
小題2:Who can use the Cyber Cafe?
Only the students from poor families
All the students at Bethesda-Chevy Chase High school
Only the students from other countries
Only the students who have no computer or cannon use the Internet at home
小題3:Which of the following is NOT true according to the passage?
Parents interested in technology proposed a Cyber Cafe.
The community wanted all students to have the best chances to learn.
Officials in the area supported the idea.
The foundation didn’t support the idea until two years later.
小題4:This passage may be adapted from a column entitled _________.
A．Education ReportB．In the NewsC．Development ReportD．Science Report

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

The question of what children learn, and how they should learn, is continually being debated and redebated. Nobody dares any longer to defend the old system, the learning of lessons parrot-fashion, the grammar-with-a-whip system, which was good enough for our grandparents. The theories of modem psychology have stepped in to argue that we must understand the need of children. Children are not just small adults; they are children who must be respected as much.
Well, you may say, this is as it should be, a good idea. But think further. What happens? "Education" becomes the responsibility not of teachers, but of psychologists (心里學(xué)家). What happens then? Teachers worry too much about the psychological implications (暗示) of their lessons, and forget about the subjects themselves. If a child dislikes a lesson, the teacher feels that it is his fault, not the child’s. So teachers worry whether history is "relevant" to modern young children. And do they dare to recount stories about violence? Or will this make the children themselves violent? Can they tell their classes about children of different races, or will this encourage racial hatred? Why teach children to write grammatical sentences? Verbal expression is better. Sums? Arithmetic? No: Real-life mathematical situations are more understandable.
You see, you can go too far. Influenced by educational theorists, who have nothing better to do than to write books about their ideas, teachers leave their teacher-training colleges filled with grand, psychological ideas about children and their needs. They make elaborate, sophisticated (精致的，復(fù)雜的) preparations and try out their "modem methods" on the long-suffering children. Since one "modem method" rapidly replaces another the poor kids will have had a good bellyful by the time they leave school. Frequently the modem methods are so sophisticated that they fail to be understood by the teachers, let alone the children; even more often, the relaxed discipline so essential for the " informal" feelings the class must have, prevents all but a handful of children from learning anything.
8. People do not dare defend the old system mainly because under the old system________.
A. too much grammar was taught to children     B. children were spoiled (寵壞)
C. children were treated as grown-ups          D. children were made to learn passively(被動(dòng)的)
9. What view do the modem psychologists hold?
A. Children must be understood and respected.
B. Children are small adults and know what they need.
C. Children are better off without learning lessons.
D. Education of children is the responsibility of psychologists.
10. What happens when teachers pay too much attention to the psychology of their lessons?
A. They find that the children dislike the lessons.
B. They tend to blame students for their failure.
C. They do not pay enough attention to the actual lessons.
D. They no longer want to teach children history.
11. Grammatical sentences are regarded as unimportant because ________.
A. it is better to use verbs only
B. words are said out of natural feelings only
C. talking freely and naturally without sentences is a better form of expression
D. it is felt that formal grammar rules might cause unnatural expressions
12. According to the passage, the modern methods are understood by ________.
A. neither teachers nor pupils      B. only a handful of teachers and pupils
C. the more sophisticated teachers  D. everyone who enjoys the relaxed discipline of the informal classes

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

Across the world, 1.1 billion people have no access to clean drinking water. More than 2.5 billion people lack basic sanitation.(衛(wèi)生設(shè)備)

The combination proves deadly. Each year, diseases related to inadequate water and sanitation kill between 2 and 5 million people and cause an estimated 80 percent of all sicknesses in the developing world. Safe drinking water is a precondition for health and the fight against child death rate, inequality between men and women, and poverty.
Consider these facts:
●The average distance that women in Africa and Asia walk to collect water is 6 kilometers.
●Only 58 percent of children in sub-Saharan Africa are drinking safe water. and only 37 percent of children in South Asia have access to even a basic toilet.
●Each year in India alone, 73 million working days are lost to water-borne diseases.
Here are three ways you can help:
1)Write Congress
Current U.S. foreign aid for drinking water and sanitation budgets only one dollar per year per American citizen. Few members of Congress have ever received a letter from voters about clean drinking water abroad.
2)Sponsor a project with a faith-based organization
Many U.S. religious groups already sponsor water and sanitation projects, working with partner organizations abroad. Simply put a single project by a U.S. organization can make safe water a reality for thousands of people.
3)Support nonprofit water organizations
Numerous U.S.-based nonprofits work skillfully abroad in community-led projects related to drinking water and sanitation. Like the sample of non-profits noted as follows, some organizations are large, other small-scale, some operate worldwide, others are devoted to certain areas in Africa, Asia, or Latin America. Support them generously.
1. The three facts presented in the passage are used to illustrate that________.
A. poverty can result in water-borne diseases
B. people have no access to clean drinking water
C. women’s rights are denied in some developing countries
D. safe drinking water should be a primary concern
2. The intended readers of the passage are________.
A.  Americans               
B. overseas sponsors
C.  Congressmen   
D .  U.S.-based water organizations
3. The main purpose of the passage is to call on people to _________.
A. get rid of water-related diseases in developing countries
B. donate money to people short of water through religious groups
C. fight against the worldwide water shortage and sanitation problem
D. take joint action in support of some nonprofit water organizations
4. What information will probably be provided following the last paragraph?
A. A variety of companies and their worldwide operation.
B. A list of nonprofit water organizations to make contact with.
C. Some ways to get financial aids from U.S. Congress.
D. A few water resources exploited by some world-famous organizations.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

The African elephant, the largest land animal remaining on earth , is of great importance to African ecosystem(生態(tài)系統(tǒng)). Unlike other animals, the African elephant is to a great extent the builder of its environment. As a big plant-eater, it largely shapes the forest-and-savanna(大草原) surroundings in which it lives, therefore setting the terms of existence for millions of other animals that live in its habitat.
It is the elephant's great desire for food that makes it a disturber of the environment and an important builder of its habitat. In its continuous search for the 300 pounds of plants it must have every day, it kills small trees and underbushes, and pulls branches off big trees. This results in numerous open spaces in both deep tropical forests and in the woodlands that cover part of the African savannas. In these open spaces are numerous plants in various stages of growth that attract a variety of other plant-eaters.
Take the rain forests for example. In their natural state, the spreading branches overhead shut out sunlight and prevent the growth of plants on the forest floor. By pulling down trees and eating plants, elephants make open spaces, allowing new plants to grow on the forest floor. In such situations, the forests become suitable for large hoofed plant-eaters to move around and for small plant-eaters to get their food as well.
What worries scientists now is that the African elephant has become an endangered species. If the elephant disappears, scientists say, many other animals will also disappear from vast areas of forest and savanna, greatly changing and worsening the whole ecosystem.
11. What is the passage mainly about?
A. Disappearance of African elephants.
B. Forests and savannas as habitats for African elephants.
C. The effect of African elephants' search for food.
D. The eating habit of African elephants.
12. What does the underlined phrase “setting the terms” most probably mean?
A. Fixing the time.                                   B. Worsening the state.
C. Improving the quality.                          D. Deciding the conditions.
13. What do we know about the open spaces in the passage?
A. They result from the destruction of rain forests.
B. They provide food mainly for African elephants.
C. They are home to many endangered animals
D. They are attractive to plant-eating animals of different kinds.
14. According to the passage, which of the following statements is TRUE?
A. The African elephant is the largest animal on earth.
B. African elephants have 300 pounds of plants every day, including small trees and underbushes.
C. The African elephant is in a way the builder of the environment like other land animals
D. If the African elephant disappears, the whole ecosystem won’t be affected..
15. The passage is developed mainly by        .
A. showing the effect and then explaining the causes
B. pointing out similarities and differences
C. describing the changes in space order
D. giving examples

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

In June, 2007, a group of students from eight high schools in Winnipeg, the capital of Canada’s Manitoba province, will begin test-launching (試發(fā)射) a satellite the size of a Rubik’s cube.
The one-kilogram Win-Cub satellite, named for its home city and its shape, will be put into low orbit. Once in space, it can perform for a few months or up to several years, communicating information that could help find the signs of earthquakes.
There are 80 similar satellite projects worldwide, but this is the first high-school based program of its kind in Canada. 30 Manitoba high school students are having a hand in designing and building the satellite, in cooperation with aerospace (航空航天的) experts and 10 students from the University of Manitoba, and with support from two other organizations.
The Win-Cube project is not something that goes on a piece of paper; it is real-world engineering, allowing high school students to have an opportunity to learn more about the exciting world of engineering through their participation in this challenging program. It is also taken as a wonderful example of the unique partnerships within Manitoba. Designing, building and launching a satellite with high-school participation will bring this world-class educational project into reality and Manitoba closer to space
“These Manitoba high school students deserve congratulations for their enthusiasm, innovation (創(chuàng)新), and a strong love for discovery,” said Education, Citizenship and Youth Minister Peter Bjomson. “We want to make science more relevant, interesting and attractive to high school students by showing them how classroom studies can relate to practical experience in the workplace or, in this case, in space,” Bjomson added. 
The Win-Cube program is mainly named at inspiring a strong desire for discovery on the part of the students. It also shows Manitoba’s devotion to research and innovation and the development of a skilled workforce—all important drivers of knowledge-based economic growth.
1. According to the passage, the Win-Cube satellite is        .
A. named after Manitoba and its shape               
B. intended for international communication
C. designed like a Rubik’s cube both in shape and size 
D. challenged by university students around the world
2. According to Mr. Bjomson,        .
A. those Manitoba high school students are worth praising
B. the study of space can be practically made in classrooms
C. Manitoba high schools are famous for the study of space
D. scientific research is too far away from high school students
3. The primary purpose of the project is to        .
A. find the early signs of earthquakes            
B. relate studies to practical
C. help high school students study real-world engineering
D. inspire a strong desire for discovery among the students
4. Which of the following statements is WRONG?
A. In Canada there are 80 similar satellite programs in all.
B. These students will have an opportunity to learn more about engineering through the project.
C. These high school will have a strong love for discovery and be interested in science.
D. This Win-Cube program is very successful in Canada.
5. The best title for this passage may be        .
A. Manitoba School                        B. Win-Cube Program
C. Space Co-operation                       D. Satellite Launching

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：不詳 題型：閱讀理解

GET YOUR DEGREE AT HOME!
Have you ever wondered what a Degree might be worth to you in your job or career(事業(yè))? It means a lot of Americans with an Associate Degree average nearly $10,000 more in yearly earnings than those with just a High School Diploma(畢業(yè)證).
Harcourt Learning Direct offers you a way to get a Specialized Associate Degree in 11 of today’s growing fields-without having to go to college full time. With Harcourt, you study at home, in your spare time-so you don’t have to give up your present job while you train for a better one. Choose from exciting majors like Business Management, Accounting, Dressmaking ＆Design, Bookkeeping, Photography, Computer Science, Engineering, and more! Your training includes everything you need! Books, lessons, learning aids-even professional-quality tools and equipment-everything you need to master your training and more ahead to a new career is included in the low tuition(學(xué)費(fèi)) price you pay. Your education is nationally recognized! Nearly 2, 000 American companies-including General Electric, IBM, Mobile, General Motors, Ford, and many others-have used our training for their employees. If companies like these recognize the value of our training, you can be sure that employees in your area will, too!
Earn your degree in as little as two years! Get a career diploma in just six months! The career of your dreams is closer than you think! Even if you have no experience before, you can get valuable job skills in today’s hottest fields! Step-by-step lessons make learning easy. Prepare for promotions(提升), pay raises, even start a business of your own! Send today for FREE information about Harcourt at home training!
Simply fill in your name and address on the coupon(票券) above. Then write in the name and number of the one program you’re most interested in, and mail it today. We’ll rush your free information about how you can take advantage of the opportunities(機(jī)會(huì)) in the field you’ve chosen. Act today!
Mail coupon today! Or call the number below 1-800-372-1589. Call any time, 24 hours a day, 7 days a week. www. Harcourt-learning. com E-mail：Harcourt＠learning. com.
1. This advertisement aims at calling on people to ________.
A. attend full-time universities                      B. work part time to further their education
C. improve their education at home to get better jobs   D. earn their degrees in different ways that suit them
2. Which of the following is NOT clearly mentioned in this advertisement? 
A. The way how you will get your degree.        B. Tuition price. 
C. The hot fields you will be preparing yourself for.  D. The length of time it will take you to get a degree.
3. What does the writer of this ad intend to say by naming General Electric, IBM, Ford, etc.?
A. To show that their training is widely used in the country. 
B. To show that the training program is fully supported by famous companies in the U. S.
C. To prove the value of their training in every area. 　
D. To show the importance of getting recognized by the most famous companies.
4. It seems to the writer that the greatest attraction for people to take their training is______. 
A. its convenience                           B. the degree’s nation-wide recognition
C. the economic benefit(利益) it will bring about  D. the hot fields the training will help people to enter
5. How many ways are mentioned in the ad for people to get in touch with the Harcourt Learning Direct?
A. One. 　　　  　B. Two. 　　  　　C. Three. 　 　　　D. Four.

查看答案和解析>>

同步練習(xí)冊(cè)答案