Pretoria, South Africa – Hundreds of swimmers play in the water along a South Africa beach. Suddenly a huge shark appears off shore and heads for the bathers. Before it can get close to the swimmers, the shark, for some mysterious reason, starts swimming parallel to the beach. Then it turns away from the shore and heads out to sea, leaving the swimmers untouched.
Such a scene will soon become common along shark-in-fasted (鯊魚成群的) shores. An electrical engineer from the University of Pretoria has developed an electrical system that repels (擊退) sharks by controlling their movements. Confused by this action, the sharks end up turning away from the beach.
In this unusual shark-repellent method, an insulated (絕緣的) cable is buried on the bottom of the sea around a beach where people swim. When an electric current is sent through the cable, an electric field is produced in the water above the cable.
When shark swims into the electric field, nerve cells just below the shark' s skin will sense the field. The electricity produces a reflex (反射作用) action in the shark' s muscles, causing the dangerous animal to swim parallel to the cable. Confused by increasing loss of control of its muscles, the shark suddenly changes its direction and heads seaward, away from the electric field.
In a test of the invisible new shark-repellent system, a cable was placed around a beach in St. Lucia, an island around the beach a long time ago to keep sharks away from swimmers, and a net was left in place during the experiment.
When the electric field was left on for more than a year and a half, no sharks were found in the net. However, when the power was turned off,89 sharks ended up in the net.
Using the electric-wall method instead of net to protect bathers would avoid the needless death of many sharks, said biologists. Currently, thousands of sharks die each year when they become trapped in protective nets that surround holiday resorts in Africa and Australia.  About 10 to 15 humans are killed by sharks annually.
1．Why doesn' t the shark attack the swimmers according to the passage?
A．Because there are so many swimmers in the water.
B．Because the shark isn’t so hungry as to eat the swimmers.
C．Because of some mysterious power from the heaven.
D．Because there is an invisible electric field confusing the shark.
2．An electrical engineer from the University of Pretoria has developed __      .
A．a(chǎn) protective net   
B．a(chǎn) new shark-repellent system
C．the electric field        
D．a(chǎn)n insulated cable
3．An electric field is produced in the water above the cable         .
A．only when a shark swims into the electric field
B．only when an insulated cable is buried on the bottom of the sea around a beach where people swim
C．only when an electric current is sent through the cable
D．only when the sharks are trapped in protective nets
4．Which of the following is NOT TRUE according to the passage?
A．Protective nets had been fixed earlier than the new shark-repellent system.
B．The new shark – repellent system will probably replace the protective nets.
C．Thousands of sharks have died each year since this new system was put into use.
D．Using the electric-wall instead of nets would avoid the needless death of many sharks.

小題1:D
小題2:B
小題3:C
小題4:C
略
練習冊系列答案
相關習題

科目：高中英語 來源：不詳 題型：閱讀理解


第三部分：閱讀理解（每題２分，共３０分）
Maria is a very fast runner. She has won many races put on by the factory in Russia where she works. She was asked how she was able to stay in such good shape（體型）. This was her answer.
“I’m in shape because of the way I spend my day. It begins at 5:30 in the morning. I jump out of bed to cook for my husband and iron（熨衣服） the clothes. Then I have to start running to work on time.
“I rush with a large bag in one hand and my four-year-old baby in the other. First， I stop at the school, hand my baby to the teachers, and then rush to work. After work I run back to the school to pick up my baby and then run to the market. Then I run home to start cooking supper-and then it takes time to feed them and get them all to bed. Then I start doing the washing so I can iron in the morning.
“My husband is soft because I have made life easy for him. He doesn’t hurry to and from work，and I have the table set when he gets home. He eats， puts on the television, sits down and reads the newspaper. And that’s why I’m in such good shape—and my husband isn’t.”
1.Maria is in good shape mainly because she ＿＿＿＿＿＿＿.
A. goes to exercise classes          B. runs so much every day
C. has won many races             D. is a Russian
2.Maria gets up at 5:30 in the morning because ＿＿＿＿＿＿.
A. her children wake her 
B. she has so much to do before she goes to work
C. she likes getting up early 
D. her husband wakes her
3.After work, Maria usually＿＿＿＿＿＿＿＿＿.
A. goes on with her work           B. takes her baby to school
C. irons the clothes                D. cooks supper
4.Which of the following is TRUE about Maria’s hus band?
A. He’s a bad?tempered man.
B. He always goes to work in a hurry. 
C. He isn’t in good shape. 
D. He cooks breakfast by himself.
5.Which of the statements is right ?
A. Maria is an American woman.
B. Maria won many races put on by the CLUB in Russia.
C. Maria has to hurry to do something every day.
D. Maria and his husand care about each other.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Bend over, take a deep breath and drink some water! This is just one of hundreds of tips you might get if you have the hiccups （打嗝）．Hiccups are so mysterious．We really don't know why they start and why they stop．
Everyone has a favorite cure for a case of the hiccups．Some people think that a good scare is necessary to get well．Others eat a teaspoon of sugar．Still others drink a glass of water with a knife in it．
An American man named Jack O'Leary said he had hiccupped 160 million times over a period of eight years．He tried 60,000 cures, but none of them worked．At last he prayed to Saint Jude, the saint of Hopeless cases, and his hiccupping stopped immediately.
It took a British plumber eight months to cure his hiccups．People from all over the world wrote him letters with suggestions for getting well．He tried them all, but the hiccups continued．Finally, he drank a "secret" mixture someone had sent him．By that evening his hiccups were gone．
Why did these cures work for these two men? No one really knows．But people who have studied many cases of hiccups have an idea—hiccups usually go away if you believe in the cure．
小題1:How did Jack O'Leary stop his hiccups?
A．He took a deep breath．B．He prayed to Saint Jude．
C．He ate a teaspoon of sugar．D．He drank a "secret" mixture．
小題2:The British plumber spent _ ___in stopping his hiccups．
A．4 hoursB．2 days C．8 months D．8 years
小題3:      might be the best cure for hiccups according to the passage．
A．Cold waterB．A spoonful of salt
C．Special pillsD．What you believe in
小題4:From this passage, we can learn ____．
A．Saint Jude is an expert in curing the hiccups
B．the reason why the hiccups start and why the hiccups stop
C．some people think that a good scare is a cure for a case of hiccups
D．the British plumber drank a "secret" mixture given by an experienced doctor and then became well
小題5:What is the main idea of this passage?
A．Different ways to stop hiccups．B．What makes hiccups happen．
C．How to get hiccups．D．Jack O'Leary's hiccups．

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


Handwriting reveals a great deal about how an individual thinks, since the brain dictate (發(fā)號施令) hand movements when a person writes. People who think quickly will write quickly, while people whose thinking is slow will write in the same way. Sometimes we see very elaborate (精致的) handwriting, particularly among public figures, such as actors or politicians, who want to draw attention to themselves. For them, handwriting is like a dress that enables them to stand out from the crowd.
The handwriting of someone who is suited to a routine job will appear well organized, clear, and regular, without any special features drawing attention to it. If the job requires proven accuracy, like that of an accountant(會計), the handwriting, especially the numbers, should be precise. On the other hand, someone in sales or public relations must be self-assured, know how to make a good impression, and be able to befriend people even when meeting them for the first time. The handwriting of such individuals will appear rather large, with elaborate capitals and on oversized signature. It will be quick, fluent, and not necessarily reasonable.
Handwriting analysis can be used to find potential behavioral or personality problems. People who are impulsive, aggressive, or dishonest write differently than those who are socially well adapted. Warning signs include broken and strongly or sporadically (零散的) pressured handwriting; disorderly handwriting in which the words run over the lines on the paper, or extremely sharp handwriting. Generally, handwriting that is extreme in any aspect-too small, too weak or too pressured-is suspect.
Evidence of medical problems also shows up in a person’s handwriting. Individuals in pain often stop in the middle of writing. Pauses will be visible in the handwriting of people who experience difficulty breathing, because they stop writing to take a breath.
Handwriting expresses the mental and physical state of the individual, as well. Depressed people write slowly, with lines sloping (傾斜) down and heavy pressure exerted(施加) on the page. People who are excessively excited will write quickly, and their handwriting will be extremely disorganized and practically unreadable. People who are tired tend to write lines that descend down the page, and their handwriting will appear weak and slow. Healthy and vigorous individual will write energetically, and their handwriting will be quick, rhythmic and fluent.
71. The passage is mainly about _____________.
A. what handwriting indicates
B. handwriting and personalities
C. the relationship between handwriting and the individual
D. handwriting analysis and the problems it shows
72. Suppose you are a famous pop star, your handwriting will be in the style of being_______.
A. well-organized          B. oversized           C. elaborate          D. sharp
73. If a person writes with a rather large, elaborate capitals and an oversized signature, we can conclude that he is probably a (an) __________.
A. famous person          B. salesman           C. doctor             D. accountant
74. If you see disorderly handwriting, you will think that the person who writes it is ________.
A. depressed          B. vigorous            C. slow in thinking        D. dishonest
75. According to the passage, a person’s handwriting has something to do with(與……有關) all of the following EXCEPT his______.
A. mind                B. education          C. health               D. profession (職業(yè))

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

       “Dad! He took a book without paying!” I yelled .
My father looked surprised. Before the boy could say anything, his mother grabbed his arm and shook it. “Is it true? You stole? Tell me!”
Everyone was quiet. The boy began to cry, and he nodded his head. He pulled out the comic book (漫畫書) from under his shirt. 
“Oh, Mr. Kim. I am sorry! My Ted made a big mistake!” Mrs. Diaz told my father. She tried to take the comic book, but Ted wouldn’t let go.
“It’s OK. He can keep it,” my father said with a smile.
“Oh no,” Mrs. Diaz said. “Let me pay right now ...” She dug in her purse. “How much?”
“Three seventy-five.”
Mrs. Diaz’s eyes widened, and she dug deeper. I saw her mouth make a small line. “Three seventy-five?” she asked.
“It’s OK. You can pay later,” my father said.
“No,” Mrs. Diaz said. She kept looking in her purse. “I have money here.”
I felt bad for yelling, for I realized that Ted had tried to steal the comic book because he didn’t have the money. Maybe the boy could have a job, I thought.
I had an idea.
“What if he worked with me?” I asked. They turned to me.
I said, “He can work with me to pay for the comic book.”
“Good,” my father said smiling at me. Mrs. Diaz nodded. She turned to her son, “You hear? You will work and buy the comic book!”  
“Yes, Mama,” Ted said, hanging his head.
As they left, Ted looked back, and though he still seemed sad, he stuck out (伸出) his tongue at me.
Ted has been working here for two weeks. He has paid for the comic book, but my father says he is such a good worker that he can work with me as long as he wants. We are friends now. 
小題1: Where did the story most probably take place? 
A．In a classroom.B．In a supermarket.C．At a bookstore.D．At a library.
小題2: By saying “but Ted wouldn’t let go” in Paragraph 4, the author means Ted ______.
A．took the book by mistakeB．wanted to keep the book
C．didn’t want to go homeD．didn’t think he was wrong
小題3:From the underlined sentences in the eighth paragraph, we may infer that Mrs. Diaz ______. 
A．didn’t think her son stole the book
B．had been out of work for a long time
C．forgot to take money with her that day
D．couldn’t afford to pay for the book
小題4: In the last paragraph, what does the author mainly tell?
A．His idea was successful.B．Ted didn’t like the job.
C．He liked Ted very much.D．Ted was a naughty boy.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


When you enter a supermarket, you see shelves full of food. You walk between the shelves. You carry a shopping basket with your food in it.
You probably hear soft, slow music as you walk between the shelves. If you hear fast music, you walk quickly. The supermarket plays slow music. You walk slowly and have more time to buy things.
Maybe you go to the meat department first. There is some meat on sale, and you want to find it. The manager of the supermarket knows where customers enter the meat department. The cheaper meat is at the other end of the meat department, away from where the customers enter. You have to walk by all the expensive meat before you find the cheaper meat. Maybe you will buy some of the expensive meat instead of the meat on sale.
The department selling milk and milk products such as butter and milk powder is called the dairy department. Many customers like milk that has only a little butter fat in it. One store has three different jars of low fat milk. One says “1 percent fat” on the jar. The second says “99 percent fat free”, the third says “Low fat” in big letters and “1%”in small letters. As you can see, all the milk has the same amount of fat. The milk is all the same. However, in this store the three jars of milk cost three different amounts of money. Maybe the customers will buy the milk that costs the most.
Most of the food in supermarkets is very pleasing. It all says “Buy me!” to the customers. The expensive meat says “Buy me” as you walk by. The expensive milk jar says “Buy me! I have less fat.”
77. The manager of the supermarket knows______.
A. which customers like low fat milk 　　　　　　　B. which customers like slow music
C. where customers enter the meat department 　　　D. where customers come from
78. When you walk by the expensive meat, maybe you will______.
A. buy some 　　　B. try to find fresh fruits 　　　C. look for low fat milk 　　D. just walk on
79. There are three different jars of low fat milk and_____.
A. one has more fat than the other two 　　　  B. they are almost the same amount of money
C. one has less fat than the others 　　　　   D. they all have the same amount of fat
80. Supermarket managers make the food pleasing so that_____.
A. there will be more buyers 　　　B. buyers will be proud
C. it is good and expensive 　　　D. they can raise the prices

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


Experts say that agriculture provides fourteen percent of the world's greenhouse gas emissions each year．The gases released include carbon dioxide, a major cause of global warming．
Twenty-one nations around the world recently joined forces to better understand and prevent greenhouse gas emissions from farms．The Global Research Alliance on Agricultural Greenhouse Gases was launched at the United Nations conference on climate change．The meeting took place in Copenhagen, Denmark last month．
Agricultural experts blame a number of farm activities for producing greenhouse gases．For example, animal waste and cattle digestive systems release methane （甲烷，沼氣） gas．Fertilized soil and the burning of crop waste also release harmful gases into the air．Experts say some methods of farming ?turning the soil to prepare for planting ?also release harmful carbon dioxide．
An official of the European Commission's Directorate General for Research says agricultural greenhouse gas emissions can be cut．Maive Rute suggests feeding animals a diet designed to reduce emissions．
The new agricultural research group says protecting against global warming is only part of its purpose．It says the world also needs to develop better farming methods to feed growing populations in poor countries．
United States Agriculture Secretary Tom Vilsack said no one single nation can fight agricultural greenhouse gas emissions and increase food production at the same time．This is why the alliance is important for combining resources and finding new ones．
The United States Department of Agriculture will increase spending on farm emissions research by ninety million dollars over the next four years．The total will reach one hundred thirty million dollars．The U．S．D．A．will share the research with other countries in the Global Research Alliance on Agricultural Greenhouse Gases and support researchers from developing countries that belong to the alliance．Money from the Borlaug Fellowship program will let the researchers study agricultural climate change with American scientists．
Mister Vilsack said that just as climate change has no borders, there should be no borders for research．
72．In Paragraph 4, Maive Rute recommends _____．
A．increasing food production
B．changing cattle digestive systems
C．developing better fanning methods
D．giving animals the food meant to produce fewer emissions
73．The underlined word "alliance" in Paragraph 6 probably means _____．
A．Action or state being joined together
B．An agreement signed between countries
C．A program or project set up for a research
D．An organization formed for different goals
74．How much has the U．S．D．A．spent on farm emissions research so far?
A．130 million dollars．           B．220 million dollars．
C．40 million dollars．                D．90 million dollars．
75．The purpose of the passage is to ____．
A．suggest a total ban on farm activities
B．introduce Copenhagen conference held last month
C．a(chǎn)ppeal to more countries to cut agricultural emissions
D．inform readers of the major cause of global warming

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


Many people say that the United States is a paradise for the children, a struggling field for the youth and a tomb for the aged. However, the situation is quite different in Australia. Different people have their own ways for enjoyment and their own worlds of pastime.
Most children often work hard in school since they have to face various exams. After school they do not want to confine themselves to books any more. Instead, they put aside their schoolbags at home and sneak quickly to some quiet street comers for their games. Bigger children like to shoulder their large kites to some steep cliffs, and jump to fly in the sky with their kites.
Some old people often get up early in the morning and go to parks to do newspaper reading. After breakfast, they come to horse races, dog races and sometimes car races for betting. If he wins, he will feed himself a good dinner. In the evening, they stay at home, watching TV sometimes with grandchildren. Some of the aged also enjoy fishing and gardening.
Young people prefer to go outing for holidays. At the weekends, they go to the seashore for swimming or to the forest for hunting and camping, or mountainous areas for picnicking. Then in the evenings on Sundays, they start their long bumper-to-bumper drive back on the highways. Nobody seems in a hurry.
The Australian government also encourages its people to have more relaxation after work. Sometimes, certain kind of financial help is distributed to people going on holidays and public holidays are purposely set on Monday or Friday so that Australians may have a longer weekend for enjoyment. They think people can word better only after they get a full relaxation. And it grows out of this idea that relaxation comes the top priority(優(yōu)先權)for enjoyment in Australia.
60．According to many people’s opinion, which of the following is NOT true?
A．All people in the US live a desirable life.
B．The competition among American young people is fierce.
C．The life of the American old people is very terrible.
D．Children in America are extremely happy.
61．Australia is different from America because Australia_______.
A．is not a paradise for children
B．is not a struggling field for the youth
C．is not a tomb for the aged
D．has different worlds for different people
62．There is an idea of enjoyment priority in Australia because____.
A．enjoyment is more important than other aspects of life
B．a(chǎn) full relaxation will make people work better
C．enjoyment can make people happy
D．Australian people are lazy
63.The underlined part can be replaced by “ ______．
A.adjust themselves to                                      B．prevent themselves form
C．limit themselves to                                      D．satisfy themselves with

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解


If you are a parent, grandparent, guardian, or anyone involved in bringing up a child, choosing the right school can be a hard decision. Your choice of school must be made carefully in order to provide the best education for your child.
If you are living overseas and are interested in a school over here, then please visit our International Zone. Similarly, if you are looking for an independent school abroad, you will also find useful information in our International Zone.
There are many things to consider.  Boarding (寄宿) school or day school? Senior, junior, or both? Single-sex or coeducational? Your child may have specific religious needs, a particular talent or a special educational need. How much does an independent education cost? Is help available if I can' t afford the fees? How do I apply for a place?
The ISC information & advice service is a free information service, established by the Independent Schools Council (ISC) to give advice on reliable independent schools in the UK and Ireland. A national information team working for the ISC information & advice service deals with thousands of enquiries (詢問). In addition to our easy-to-use online School Search, we offer help, replies to enquiries, and a wealth of information about choosing and applying to an independent school.
You can get the ISC information & advice service in the following ways；
● Call 0845 SCHOOLS (7246657), our national helpline, which is continually manned from 9 am to 5 pm, five days a week.
●Send an email to information@ isc. co. uk
Email enquiries are replied to within one working day.
64. You can most probably find the above information __
A. on the Intemet  B. in the textbook  C. from a novel    D. in a guide book 65.The ISC information & advice service mainly gives information on __
A. language study                       B. boarding schools
C. British and Irish independent schools      D. British culture
66. Someone abroad can get quicker replies at 4:30 pm on Friday by __
A. emailing to information@ isc. co. uk
B. calling 0845 SCHOOLS (7246657)
C. going to the website of ISC information & advice service
D. visiting the website of International Zone
67.  An independent school can admit the following as students EXCEPT
A. grown-ups     B. only girls    C. both boys and girls    D. only boys

查看答案和解析>>

同步練習冊答案