While Jennifer was at home taking an online exam for her business law class, a monitor(監(jiān)控器)a few hundred miles away was watching her every move.
Using a web camera equipped in Jennifer’s Los Angeles apartment, the monitor in Phoenix tracked how frequently her eyes moved from the computer screen and listened for the secret sounds of a possible helper in the room. Her Internet access was locked - remotely - to prevent Internet searches , and her typing style was analyzed to make sure she was who she said she was: Did she enter her student number at the same speed as she had in the past? Or was she slowing down?
In the battle against cheating, this is the cutting edge and a key to encourage honesty in the booming field of online education. The technology gives trust to the entire system, to the institution and to online education in general. Only with solid measures against cheating, experts say, can Internet universities show that their exams and diplomas are valid - that students haven’t just searched the Internet to get the right answers.
Although online classes have existed for more than a decade, the concern over cheating has become sharper in the last year with the growth of "open online courses." Private colleges, public universities and corporations are jumping into the online education field, spending millions of dollars to attract potential students, while also taking steps to help guarantee honesty at a distance.
Aside from the web cameras, a number of other high-tech methods are becoming increasingly popular. Among them are programs that check students’ identities using personal information, such as the telephone number they once used.
Other programs can produce unique exam by drawing on a large list of questions and can recognize possible cheaters by analyzing whether difficult test question are answered at the same speed as easy ones. As in many university classes, term papers are scanned against some large Internet data banks for cheating.
【小題1】Why was Jennifer watched in an online exam?

A.To correct her typing mistakes.
B.To find her secrets in the room.
C.To prevent her from slowing down.
D.To keep her from dishonest behaviors.
【小題2】 The underlined expression cutting edge in Paragraph 3 is closest in meaning to______.
A.a(chǎn)dvanced techniqueB.sharpening tool
C.effective ruleD.dividing line
【小題3】For Internet universities, exams and diplomas will be valid if _____.
A.they can attract potential students
B.they can defeat academic cheating
C.they offer students online help
D.they offer many online courses


【小題1】D
【小題2】A
【小題3】B

解析試題分析:本文主要討論了網(wǎng)絡課程的防作弊問題。在幾百英里以外的遠程網(wǎng)絡考試的教室內(nèi)安裝監(jiān)控器,這種監(jiān)控器可以監(jiān)測考試人的眼睛從電腦屏幕上離開的頻率,而且還可以監(jiān)聽房間里可能的助考者。
【小題1】D細節(jié)理解題。根據(jù)第二段倒數(shù)第二句"and her typing style was analyzed to make sure she was who she said she was: Did she enter her student number at the same speed as she had in the past? "可知監(jiān)控Jennifer的原因是為了確保她不作弊。故選D。
【小題2】A詞義猜測題。根據(jù)and前面內(nèi)容a key to encourage 以及下一句的 the technology 可知cutting edge與a key to encourage是并列關系,同時二者都可以做到鼓勵誠實行為。再根據(jù)前面this所指代的為上文中提到的防作弊科學技術,由此得知cutting edge應該為advanced technique。
【小題3】B細節(jié)理解題。根據(jù)第三段 Only with solid measures against cheating, experts say, can Internet universities show that their exams and diplomas are valid -that students haven't just searched the Internet to get the right answers.可以判斷只有杜絕了考試作弊行為,考試和文憑才會更有效,選B。
考點:考查社會教育類短文閱讀

練習冊系列答案
相關習題

科目:高中英語 來源: 題型:閱讀理解

It is common and usual to see people freak out when they face challenges in their life. We all pass in different life problems and challenges. No one is free of life problems. Only a dead man faces no problem. As long as you are alive, challenges are everywhere.
How do you face problems and challenges in your life? Problems and challenges are the building blocks of your personality. They make you who you are. Besides, whether what happened in your life builds or destructs you depends on how you look at it. If you take your problems as troubles, they will be troubles and may cause destruction. If you take them as constructive tools, you are going to be built up on them.
Problems are everywhere. No one can avoid them. And they are good too. They open up a different look and opportunity if you are willing to see. When you face troubles, do not frustrate or freak out. Just cool yourself to think in a different direction. Think in a positive way. Every problem has its own good as well as bad sides. Focus on the good one. Look at the bright side.
Besides, there is always a good person, perhaps your mom or dad, or one of your friends, right beside you who can turn everything into your best if you are willing to turn to them. No matter what happens­, they will be there to help you. Trust them and they will never let you down. All you need to know is that you are loved wherever you are.
【小題1】What’s the meaning of the underlined phrase “freak out” in Paragraph 1?

A.feel shy. B.feel upset. C.keep up. D.stay calm.
【小題2】In Paragraph 2, the writer implies that ______.
A.problems cause troubles
B.challenges can be avoided
C.a(chǎn)ttitude is everything
D.personalities are built on failures
【小題3】According to the last paragraph, when we're in trouble, we ______.
A.can only depend on our parents B.a(chǎn)re not confident
C.should only believe ourselves D.a(chǎn)re not alone
【小題4】What’s the writer’s purpose to write the passage?
A.To explain. B.To compare.
C.To prove. D.To encourage.

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

Looking back on my childhood. I am convinced that naturalists are born and not made. Although we were brought up in the same way, my brothers and sisters soon  abandoned their pressed flowers and insects. Unlike them, I had no ear for music and languages. I was not an early reader and I could not do mental arithmetic.    
Before Word War I we spent our summer holidays in Hungary. I have only the dim memory of the house we lived in, of my room and my toys. Nor do I recall clearly the large  family of grandparents, aunts, uncles and cousins who gathered next door. But I do have a crystal clear memory of dogs, the farm animals, the local birds and above all, the insects.  
I am a naturalist, not a scientist. I have a strong love of the natural world, and my enthusiasm has led me into varied investigations. I love discussing my favorite topics and enjoy burning the midnight oil reading about other people’s observations and discoveries. Then something happens that brings these observations together in my conscious mind. Suddenly you fancy you see the answer to the riddle. Because it all seems to fit together .This has resulted in my publishing 300 papers and books. Which some may light honor, with the title of scientific research.  
But curiosity a keen eye, a good memory and enjoyment of the animal and plant world do not make a scientist? One of the outstanding and essential qualities required is self-discipline, a quality I lack. A scientist can be made a naturalist. If you can combine the two, you get the best of both worlds. 
【小題1】According to the author, a born naturalist should first of all be _____

A.full of ambition B.self-disciplined
C.full of enthusiasm D.knowledgeable
【小題2】The first paragraph tells us that the author _____
A.lost his hearing when he was a child
B.didn’t like his brothers and sisters
C.was interested in flowers and insects in his childhood
D.was born to a naturalist’s family
【小題3】The author says that he is a naturalist rather than a scientist probably because he thinks he ____.
A.just rends about other peoples observations and discoveries.
B.Lacks some of the qualities required of scientist.
C.Has a great deal of trouble doing mental arithmetic.
D.Come up with solutions in most natural ways.
【小題4】The author can’t remember him relatives clearly because__
A.He didn’t live very long with them
B.He was too young when he lived with them.
C.The family was extremely large
D.He was fully occupied with observing nature.
【小題5】Which of the following statements is true?
A.The author believes that a born naturalist can not be scientist.
B.The author read a lot of books about the natural world and oil industry
C.The author’s brothers and sisters were good at music and languages.
D.The author spent a lot of time working on riddles.

查看答案和解析>>

科目:高中英語 來源: 題型:完型填空

Michael Fish may soon be replaced as a weather forecaster by something truly fishier---the shark(鯊魚).
Research by a British biology student suggests that sharks could be used to predict storms.
Lauren Smith, 24, is close to completing her study on shark’s ability to sense pressure.
If her studies prove the theory, scientists may be able to monitor the behaviour of sharks to predict bad weather.
Miss Smith had previously studied the behaviour of lemon sharks in the Bahamas.
She then used their close relatives, lesser spotted dogfish, for further research at Aberdeen University.
Her work---thought to be the first of its kind to test the pressure theory ---- resulted from the observation that juvenile blacktip sharks off Florida moved into deeper water ahead of a violent storm in 2001.
Miss Smith said: “I’ve always been crazy about traveling and diving and this led me to an interest in sharks.”
“I was delighted to have been able to research in the area for my degree. I know there’s so much more we need to understand ---- but it certainly opens the way to more research.”
It has been discovered that a shark senses pressure using hair cells in its balance system.
At the Bimini Shark Lab in the Bahamas, Miss Smith fixed hi-tech sensors to sharks to record pressure and temperature, while also tracking them using GPS (Global Positioning System) technology.
In Aberdeen, she was able to study the effects of tidal(潮汐的) and temperature changes on dogfish----none of which were harmed. She also used a special lab which can mimic(模擬) oceanic pressure changes caused by weather fronts.
She is due to complete her study and graduate later this year. She says she will be looking for a job which will give her the chance to enrich her experience of shark research.
【小題1】The passage is most probably taken from _____.

A.a(chǎn) short-story collection
B.a(chǎn) popular science magazine
C.a(chǎn) research paper
D.a(chǎn) personal diary
【小題2】What do we learn from the first four paragraph of the passage?
A.Sharks may be used to predict bad weather.
B.Sharks’ behaviour can be controlled.
C.Michael Fish is not qualified for his job.
D.Lauren Smith will become a weather forecaster.
【小題3】Lauren Smith conducted her research by _______.
A.removing hair cells from a shark’s balance system
B.measuring the air pressure of weather fronts
C.recording sharks’ body temperature
D.monitoring sharks’ reaction to weather changes
【小題4】What is the passage mainly about?
A.A popular way of forecasting weather.
B.A new research effort in predicting storms.
C.Biologists’ interest in the secrets of sharks.
D.Lauren Smith’s devotion to scientific research.

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

No opera smells of the sea quite like Britten’s Peter Grimes. The music makes us constantly aware of the sea’s immensity, it’s potential for threat, and the play of light on its waves. But the sea isn’t just a special background, it weighs on the lives of the characters, offering them a living, but at a price. In the first act the laboured sound of the strings evokes (引起) the complete heaviness of the sailor’s work, as they haul(用力拉) the boats up the shingle (鵝卵石). Then a storm gathers which rages(肆虐) through the scene at the Inn, and stirs up an orchestral hurricane. Even when it’s calm and favorable, the sea is inescapable.
In the comfortable enclosed world of the opera house, this can only be suggested. In the production of Peter Grimes about to open at the Aldeburgh Festival, it will be really present, because the opera is taking place on the beach, the setting for much of the narrative of Britten’s opera, and also the poem by the Suffolk poet George Crabbe that inspired it.
This won’t be the first opera production to be set in the actual landscape in which the action takes place. There’s a well-known filmed production of Tosca shot in Castel Gandolfo in Rome, and a production of Donizetti’s Anna Bolena was once mounted in the moat(護城河) surrounding the Tower of London. But those were manageable urban landscapes, with comfortingly solid buildings to act as wind shields and acoustic blocks.
On the Aldeburgh beach there’s actually nothing, apart from a few boats, some whole, some wrecked. Here anything more complicated than walking the dog is hard to solve. The wind blows away one’s words, so conversation is hard, and anything not tied down tends to blow away. The sliding shingle turns one’s steps into a drunken stagger.
The idea of performing an opera in these conditions seems quite barmy — an accusation Aldeburgh director Jonathan Reakie takes cheerfully on the chin. Why has he done it? “Well, Grimes is the opera of Britten’s that’s most associated with Aldeburgh, but it’s never been produced at the Festival which he founded. There just isn’t the space for it. In his anniversary year we wanted to focus on Britten’s connection with Suffolk, and this seemed the boldest way to do it.”
Having had the mad idea, Reakie found his colleagues were not just accepting, but enthusiastic. “We spent a long time thinking about ways to do it. One idea we had was to do all the scenes at the right time of day. There’s one scene at dawn, another at midday, and a lot of action at night, but that was too complicated. Then we thought about doing a few scenes on the beach. But in the end, we thought hell, let’s just do the whole thing.”
【小題1】Which of the following can best describe the sailor’s work in the first act?

A.Pleasant. B.Hard.
C.Comfortable. D.Attractive.
【小題2】How is Paragraph 2 mainly developed?
A.By giving descriptions. B.By following time order.
C.By analyzing causes. D.By making comparisons.
【小題3】What does Paragraph 4 mainly tell us?
A.The benefits of the actual landscape.
B.The actual landscape of Aldeburgh beach.
C.The location of the Aldeburgh beach.
D.The hardship of performing opera in Aldeburgh beach.
【小題4】The underlined word “barmy” (in Paragraph 5) is closest in meaning to ____.
A.crazy B.impossible
C.wonderful D.terrible
【小題5】Reakie’s partners’ attitude towards his opera on a beach is ____.
A.eager B.cautious
C.doubtful D.unfavorable

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

One of the most important recent medical breakthroughs has been the impact of gut flora(腸道菌群)on overall health. This dynamic mix of bacteria in the digestive tract(消化道)may affect everything from obesity to asthma(哮喘).
The Gut-Mood Link
Anyone who's ever experienced "butterflies" in his or her stomach knows that the gut and the brain are connected. But until recently, scientists hadn't realized that the trillions of bacteria in our digestive tract may be driving the relationship.
One recent experiment suggests that you can control calm. Canadian researchers gave healthy mice a mixture of antibiotics, which change the makeup of GI-tract(胃腸道)bacteria. Over two weeks, some animals became more anxious and some less, depending on which drugs they received. In another study, when gut bacteria from calm mice were transferred to anxious mice, the jittery(緊張的)creatures seemed less nervous.
UCLA professor Kirsten Tillisch, doctor of medicine, recently had healthy women eat a yogurt
rich in certain types of "good" probiotic(益生菌的)bacteria. Two 'Control groups ate yogurt without such bacteria or ate nothing. Brain scans of the probiotic-yogurt eaters indicated changes in regions that could be associated with a less-anxious response in fearful or stressful situations compared with the control groups.
Scientists are even exploring whether gut microbes(微生物)might treat some brain disorders. A new study in Cell found that mice with features of autism(自ICJ癥)given a type of bacteria in healthy human GI tracts exhibited less autism-like behavior. In a recent case report, a Boston ps. chiatrist says a course of certain probiotics and antibiotics helped relieve a patient's compulsive disorder.  -We tend to focus on how your mood affects your body from the top down, not the bottom up,"  says Dr. Tillisch. "Now we know that the gut affects how your brain responds to the environment- it's a remarkable change in thinking.”
How Bacteria Talk to the Brain Scientists aren't sure how gut flora affect brain chemistry. One theory is that the bacteria access pathways along the nerve, the main highway in the nervous system that links the brain to the gut.  Another is that the bacteria influence the immune system, releasing chemicals that affect conditions like depression. Finally, researchers believe that bacteria produce or affect the metabolism(新陳代瀉'i) of chemicals, which change brain function.
Dr. Tillisch told me that patients always ask which probiotics will lift their mood.Her answer:
"We don't know yet, but we hope to one day." In the future, patients might receive probiotics or transplant(移植) in which bacteria from the gut of a healthy person are transferred to the gut of a sic': one-to prevent or treat mental health issues. But these approaches are years away from primary time.Until then, a diet rich in fruit and veggies helps cultivate(培養(yǎng))better-balanced microbes than a typical Western diet high in animal and processed products. Avoiding unnecessary antibiotics, particularly in early childhood, may also establish healthier gut bacteria.
【小題1】 According to the passage, gut bacteria might help us in many ways EXCEPT__.

A.lightening our moodB.treating autism
C.relieving depressionD.transplanting gut flora
【小題2】The missing sentence "Everyday foods may also affect the composition of gut bacteria, and in
turn, brain chemistry." could be put before__·
A.Paragraph 2B.Paragraph 3
C.Paragraph 4D.Paragraph 5
【小題3】Which of the following can be the best subtitle for the last paragraph?
A.Cultivating a Happier Gut
B.Growing Bacteria in the Future
C.Balancing Microbes and Diet
D.Living a Happy Healthy Life

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

A Southampton University team found that people who were vegetarians by 30 had recorded five IQ points higher on average at the age of 10. Researchers said it could explain why people with a higher IQ were healthier as a vegetarian diet was linked to lower heart disease and obesity rates. The study of 8,179 people was reported in the British Medical Journal.
Twenty years after the IQ tests were carried out in 1970, 366 of the participants said they were vegetarians — although more than 100 reported eating either fish or chicken.
Men who were vegetarians had an IQ score of 106, compared with 101 for non-vegetarians; while female vegetarians averaged 104, compared with 99 for non-vegetarians. There was no difference in the IQ scores, between strict vegetarians and those who said they were vegetarians but reported eating fish or chicken.
Researchers said the findings were partly related to better education and higher class, but it remained statistically significant after adjusting for these factors.
Vegetarians were more likely to be female, to be of higher social class and to have higher academic or vocational qualifications than non-vegetarians. However, these differences were not reflected in their annual income, which was similar to that of non-vegetarians.
Lead researcher Catharine Gale said, “The findings that children with greater intelligence are more likely to report being vegetarians as adults, together with the evidence on the potential benefits of a vegetarian diet on heart health, may help to explain why a higher IQ in childhood or adolescence is linked with a reduced risk of coronary heart disease in adult life.
But Dr Frankie Phillips of the British Dietetic Association said,“It is like the chicken and egg. Do people become vegetarians because they have a very high IQ or is it just that they are clever enough to be more aware of health issues?”
【小題1】What’ s the result of the research mentioned in the text?

A.Children with a higher IQ are less likely to have heart disease later in life.
B.Intelligent children are more likely to become vegetarians later in life.
C.Intelligent children tend to belong to higher social class later in life.
D.Children with a healthier heart tend to have a higher IQ later in life.
【小題2】It was found in the research that________.
A.most of the participants became vegetarians 20 years after the IQ tests were carried out
B.female vegetarians were more likely to have higher annual income than non-vegetarians
C.vegetarians who ate fish or chicken were of similar intelligence with strict vegetarians
D.vegetarians were more likely to have higher annual income than non-vegetarians
【小題3】Catharine Gale talked about “being vegetarians” in a(n)________way.
A.doubtful B.favorable
C.negative D.objective
【小題4】What’ s the best title for the text?
A.Get more IQ points!
B.Be a vegetarian, please!
C.A high IQ is linked to being a vegetarian
D.Vegetarian diet cuts heart risk

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

Think about the different ways that people use wind. You can use it to fly a kite or to sail a boat. Wind is one of our cleanest and richest power sources, as well as one of the oldest. Evidence shows that windmills (風車) began to be used in ancient Iran back in the seventh century BC. They were first introduced to Europe during the 1100s, when armies returned from the Middle East with knowledge of using wind power.
For many centuries, people used windmills to grind (磨碎) wheat into flour or pump water from deep underground. When electricity was discovered in the late 1800s, people living in remote (偏僻的) areas began to use them to produce electricity. This allowed them to have electric lights and radio. However, by the 1940s when electricity was available to people in almost all areas of the United States, windmills were rarely used.
During the 1970s, people started becoming concerned about the pollution that is created when coal and gas are burned to produce electricity. People also realized that the supply of coal and gas would not last forever. Then, wind was rediscovered, though it means high costs. Today, there is a global movement to supply more and more of our electricity through the use of wind.
【小題1】From the text we know that windmills _______.

A.were invented by Europeans armies 
B.have a history of more than 2800 years 
C.used to supply power to electric lights in remote areas 
D.have rarely been used since electricity was discovered 
【小題2】 What was a new use for wind power in the late 19th century ?
A.Sailing a boat.  B.Producing electricity. 
C.Grinding wheat into flour. D.Pumping water from underground. 
【小題3】One of the reasons why wind was rediscovered in the 1970s is that ______ .
A.wind power is cleaner 
B.it is one of the oldest power sources 
C.it was cheaper to create energy from wind 
D.the supply of coal and gas failed to meet ends 
【小題4】What would the writer probably discuss in the paragraph that follows ?
A.The advantages of wind power. 
B.The design of wind power plants. 
C.The worldwide movement to save energy. 
D.The global trend (趨勢) towards producing power from wind. 

查看答案和解析>>

科目:高中英語 來源: 題型:閱讀理解

Would it surprise you to learn that, like animals, trees communicate with each other and pass on their wealth to the next generation?
UBC Professor Simard explains how trees are much more complex than most of us ever imagined. Although Charles Darwin thought that trees are competing for survival of the fittest, Simard shows just how wrong he was. In fact, the opposite is true: trees survive through their co-operation and support, passing around necessary nutrition "depending on who needs it".
Nitrogen (氮) and carbon are shared through miles of underground fungi (真菌)
networks, making sure that all trees in the forest ecological system give and receive just the right amount to keep them all healthy. This hidden system works in a very similar way to the networks of neurons (神經(jīng)元) in our brains, and when one tree is destroyed, it affects all.
Simard talks about "mother trees", usually the largest and oldest plants on which all other trees depend. She explains how dying trees pass on the wealth to the next generation, transporting important minerals to young trees so they may continue to grow. When humans cut down "mother trees" with no awareness of these highly complex "tree societies" or the networks on which they feed, we are reducing the chances of survival for the entire forest.
"We didn't take any notice of it" Simard says sadly. "Dying trees move nutrition into the young trees before dying, but we never give them chance." If we could put across the message to the forestry industry, we could make a huge difference towards our environmental protection efforts for the future.
【小題1】The underlined sentence "the opposite is true" in Paragraph 2 probably means that trees         

A.compete for survival
B.protect their own wealth
C.depend on each other
D.provide support for dying trees
【小題2】"Mother trees" are extremely important because they        .
A.look the largest in size in the forest
B.pass on nutrition to young trees
C.seem more likely to be cut down by humans
D.know more about the complex "tree societies"
【小題3】The underlined word "it" in the last paragraph refers to        .
A.how "tree societies" work
B.how trees grow old
C.how forestry industry develops
D.how young trees survive
【小題4】What would be the best title for the passage?
A.Old Trees Communicate Like Humans
B.Young Trees Are In Need Of Protection
C.Trees Are More Awesome Than You Think
D.Trees Contribute To Our Society

查看答案和解析>>

同步練習冊答案