On October 12,1989，some British scientists were working at the computers to look for the information they needed.Suddenly they saw a lot of very bright points crossing the computer screens.At the same time the computers were working much slower.To find out what was happening they stopped their work to check some parts of the computers.To their horror，they found out that most of their stored information was got rid of by computer viruses(病毒)！Clearly all these computers had been infected by computer viruses.
It is said that the computer viruses were made by a group of young men fond of playing tricks.They all had excellent education.They created the viruses just to show their intelligence. These kinds of computer viruses are named Jerusalem Viruses.These viruses can stay in computers for a long time.When the time comes they will attack(襲擊)the computers by lowering the functions，damaging their normal programs or even getting rid of all the information.
We now come to know that Jerusalem Viruses often attack computers on Friday and that they are spreading(傳播)to a lot of computers.Among the countries that were attacked by computer viruses last year are Britain，Australia，Switzerland and the U．S.But till now，how to get rid of the terrible viruses remains a problem.
小題1:When the viruses attack the computers，the computers will work________.
A．normallyB．slowlyC．fasterD．well
小題2:The group of young men created the viruses to________.
A．damage the computers
B．test their ability
C．tell people that they were intelligent
D．play a trick on users of the computers
小題3:According to the passage，computer viruses seem to ________.
A．have been in nature for years
B．stay in any computers
C．be difficult to get rid of at present
D．be able to be got rid of in the near future
小題4:According to the passage，which of the following is TRUE?
A．Last year six countries found their computers were infected by viruses.
B．The viruses will come to a new computer after staying in the old one for some time.
C．Scientists are trying to find a way to get rid of the viruses.
D．The Jerusalem Viruses are dangerous to human health.

小題1:B
小題2:C
小題3:C
小題4:C

小題1:答案　B　[細(xì)節(jié)理解題。根據(jù)第一段第三句話At the same time the computers were working much slower.可知，感染病毒的計(jì)算機(jī)速度減慢。]
小題2:答案　C　[細(xì)節(jié)理解題。由第二段中的“just to show their intelligence”推知。]
小題3:答案　C　[推理判斷題。本文最后一句But till now，how to get rid of the terrible viruses remains a problem.暗示現(xiàn)在人們還未找到消除計(jì)算機(jī)病毒的好辦法。]
小題4:答案　C　[細(xì)節(jié)理解題�？茖W(xué)家們正在想辦法消除病毒。]
練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來源：不詳 題型：閱讀理解

Facebook (臉譜網(wǎng)) friends cannot replace the real thing, say psychologists(心理學(xué)家).
People are happier and laugh 50% more when they talk face to face with friends or via webcam (web camera) than when they use social networking sites, a study has found.
Dr. Roberts, a famous lecture at the University of Chester, said such websites don't appear to help make true friendships. Based on two questionnaires(調(diào)查表), he found there was no link between Facebook use and people with larger groups of friends.
Dr. Roberts, whose work will be presented at the British Psychological Society conference in Harrogate, said, "The bottom lime conclusion is that our relationships are not dependent on the quantity of communication. They depend on quality, and even Skype(一種網(wǎng)絡(luò)即時(shí)語(yǔ)音溝通工具) is better at increasing the quality of our communication than time on Facebook." Even talking on the phone or texting does not make people feel as good as sharing a smile, the research says. The studies suggest quality, not quantity, of communication is the most important for keeping friends for life.
People find the most satisfying relationships come from a small number of close friends, with an outer "ring" of 10 significant others. With these people, it doesn't matter what type of social media you use for communication. But people who want to "contact the world at large" using Facebook can be disappointed because they spread themselves too thinly, claim researchers.
In a third study, Dr. Roberts asked people to communicate with friends face to face or via Skype and keep a 14-day diary. This was compared with communicating via phone, text messages or social networking sites. People communicating face to face on Skype were 50% more likely to laugh, and they rated themselves as significantly happier.
小題1: Dr. Roberts's finding that there was no connection between Facebook use and people with many friends was         .
A．based on questionnairesB．based on conversations
C．through instant messagesD．through social media
小題2: What is the idea of the fourth paragraph?
A．Most people contact each other online.
B．Keeping a friend for life is not easy.
C．The quality of communication is important.
D．Skype is better at understanding us than Facebook.
小題3: What does the underlined sentence in the fifth paragraph probably suggest?
A．They are too excited to express themselves.
B．They limit their social circle to a small range.
C．They spread their information at a low speed.
D．They lack information to introduce themselves.
小題4: What is Dr. Roberts's attitude towards the use of Facebook?
A．Positive.B．Casual.C．Responsible.D．Unsupportive.

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：閱讀理解

The forces that make Japan one of the world’s most earthquake­prone (有地震傾向的) countries could become part of its long­term energy solution.
Water from deep below the ground at Japan’s tens of thousands of hot springs could be used to produce electricity.
Although Japanese high­tech companies are leaders in geothermal (地?zé)岬? technology and export it，its use is limited in the nation.
“Japan should no doubt make use of its resources of geothermal energy，” said  Yoshiyasu Takefuji，a leading researcher of thermal­electric power production.
The disastrous earthquake and tsunami on March 11,2011 caused a reaction against atomic power，which previously made up 30 percent of Japan’s energy needs，and increased interest in alternative energies，which accounted for only 8 percent.
Artist Yoko Ono has called on Japan to explore its natural energy，following the example of Iceland which uses renewable energy for more than 80 percent of its needs.
For now，geothermal energy makes up less than 1 percent of the energy needs in Japan，which has for decades relied heavily on fossil fuels and atomic power.
The biggest problem to geothermal energy is the high initial cost of the exploration and constructing the factories.Another problem is that Japan’s potentially best sites are already being developed for tourism or are located within national parks where construction is forbidden.
“We can’t even dig 10 cm inside national parks.” said Shigeto Yamada of Fuji Electric，adding that regulations protecting nature would need to be relaxed for geothermal energy to grow.
Researcher Hideaki Matsui said，“Producing electricity using hot springs is a decades­long project.We also have to think about what to do for now as energy supplies will decline in the short term.”
The Earth Policy Institute in Washington，US，believed Japan could produce 80 000 megawatts (兆瓦) and meet more than half its electricity needs with geothermal technology.
Japanese giants such as Toshiba are already global leaders in geothermal technology，with a 70 percent market share.In 2010，F(xiàn)uji Electric built the world’s largest geothermal factory in New Zealand.
小題1:What would be the best title for the text?
A．Alternative energies in Japan
B．World’s largest geothermal plant
C．Japan takes the lead in geothermal technology
D．Japan thinks of geothermal energy
小題2:What percentage of Japan’s energy needs is geothermal energy?
A．About 8%.　B．Below 1%.
C．Around 30%.　D．Over 80%.
小題3:According to Shigeto Yamada，the growth of geothermal power in Japan needs________.
A．a(chǎn) change of rules 　B．financial support
C．local people’s helpD．high technology
小題4:Geothermal energy is considered as a long­term program by________.
A．Yoshiyasu Takefuji　B．Hideaki Matsui
C．Shigeto Yamada　D．Yoko Ono
小題5:It can be learned from the last two paragraphs that________.
A．the world’s biggest geothermal plant was built by America
B．Japan will not export its geothermal technology
C．the potential of Japan’s geothermal energy is great
D．it is hard to find geothermal energy in Japan

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：單選題

Scott Langteau has this message for kids：Spend less time playing video games.
It's a message that many a mom and dad has tried to impress upon many a youngster(and some not?so?youngsters)who spends perhaps a bit too much time with game controllers in hand.
But the 40?year?old Langteau isn't a parent.He's experienced at video games－one who played producer on three “Medal of Honor” games and co?founded his own game development company.
Langteau has just published a children's book called“Sofa Boy”，which tells the story of a kid who spends too much time sitting on the couch with controllers held in hand and the rather dire consequences that follow.
It's a fairy tale picked straight from Langteau's own experiences as a lad with a fondness for video games and his painful struggle against game addiction.But first，Langteau would like make one thing clear：I'm not saying that you shouldn't play video games.I think video games are great.I think they do great things for kids.Instead，Langteau says his book is all about a little something called“moderation(克制)”．
“It's about being well rounded，”he says.“Just like with anything else，we all need to make sure that there's a variety in what we do.”
Video gamers can be rather bad?tempered when it comes to accepting criticism about their favorite entertainment.And understandably so.After all，most people who go around talking about the dangers of playing video games tend to be outsiders－people who don't play video games and certainly don't understand that they can be a valuable and healthy form of entertainment.
But Langteau and“Sofa Boy”seem to be in a unique position to deliver a message of gaming moderation that the young game masses might actually listen to.After all，this is a man who understands what it means to be a kid with a passion for games.His early experience has taught him a lesson.
小題1:Scott Langteau published “Sofa Boy” to ________.
A．share his great skills on games
B．warn kids against game addiction
C．tell about his fairy tale as a kid
D．deliver a message for games
小題2:Which of the following is TRUE of the book“Sofa Boy”？
A．The book tells of the writer's own story.
B．The book describes an experienced gamer.
C．The boy in the book wins a medal for games.
D．The boy in the book is not an addict on games.
小題3:．We can learn from the passage that ________.
A．Langteau advises the young to play games within limits
B．Langteau advises the young not to play games
C．playing video games ruins the future of kids
D．playing video games is of no benefit to kids
小題4:．By saying “It's about being well rounded” Langteau thinks ________.
A．games do great things for kids
B．gamers are usually fat and round
C．games should be viewed from all sides
D．gamers are to blame for their behaviors

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：單選題

Think of the last time a song really moved you, or meant something to you．Listening to and playing music affects marry different sections of the brain, affecting us physically as well. Why are we as humans so connected to music?
Making music is something that we are born with. There's a reason we refer to music as the “universal language”；there has been no known human culture without music. Dancing and music came before agriculture, and possibly even before language．The fact that whale music and human music have so much in common suggests that music may exist before humans and that we may be latecomers to the musical scene rather than being the inventors of music．
We begin life being affected by music; babies first begin to respond to music even before their birth. Whether or not it's true, everyone has heard that playing classical music; for your baby supposedly helps him or her become smarter. A study done in the United Kingdom concluded that children were able to recognize and even preferred music that they had heard lip to three months before birth. Although it made no difference whether it was rock music or country music, the babies who were exposed to faster songs showed a stronger preference for that song than those who had heard something slower. Researchers have also found that the playing of soft background music or a mother's soft singing actually helps premature (早產(chǎn)的)babies. Those who were subjected to the music tended to gain weight faster and were able to leave hospitals earlier than those who weren't. However, the study in the UK uncovers no links between babies listening to music and increased intelligence or brain development.
Another experiment at the University of California at Irvine compared the puzzle-solving abilities of 3-year-olds who were given piano lessons with the ability of others who sang, used computers, or did nothing. The children studying piano were better at the puzzles. Also, high school students with a musical background seem to do better on their SATs. Whether it's natural intelligence that helps the children excel in both music and math, or the music that helps develop other areas, you can't deny the benefits of a musical background.    
On the other hand, it's possible that some music and lyrics（歌詞）could be hard for children and teenagers．The lyrics of today's popular music are stated more and more clearly. A study oil mass media and teenagers showed that a group of 14- to 16-year-olds in 10 different southeastern cities listened to music an average of 40 hours per week. Obviously, the music they are listening to plays a large part in their lives，and especially influences self-identity. So any bad influences in the music will have a very direct effect on the teenagers.     Several other experiments mentioned in the American Academy of Pediatrics' policy statement on the "Effect of Music Lyrics and Music Videos on Children and Youth" supported this idea. One study from Sweden found that children who developed a preference to rock music were more likely to be influenced by their peers than by their parents. Others showed links between a predilection for heavy metal and detrimental behaviors, including taking drugs, self-killing risk, and other risk-taking habits. The American Academy of Pediatrics (AAP) doesn't support the idea of censorship（檢查制度）, but strongly encourages parents to monitor what their children are listening to.
小題1:Music is regarded as the “universal language” because ______.
A．music is important for human beings’ mental and physical health
B．music is played by people from all over the world
C．music is of great benefits to human language
D．music is present throughout the development of human culture
小題2:Which of the following proves a musical background benefits children a lot?
A．An experiment at the University of California.
B．A study done in the United kingdom.
C．A study on mass media and teenagers.
D．A study from Sweden.
小題3:According to Paragraph 3, what affects babies’ preference for songs?
A．The lyricsB．The tone C．The styleD．The speed
小題4:The author mentioned several other experiments in the AAP’s policy statement to prove________.
A．parents should monitor what their children are listening to
B．music can have harmful effects on teenagers
C．teenagers are more likely to be affected by their friends
D．children shouldn’t be exposed to too much music
小題5:What will the author probably discuss in the paragraph that follows?
A．More bad effects of music on teenagers’ daily habits.
B．Some experiments about music and teenagers.
C．Tips for parents on monitoring the music their children prefer.
D．Benefits of listening to a variety of music.

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：閱讀理解

The sound of a mosquito can mean trouble in many parts of the world. The bite of the mosquito can be deadly. The insects carry serious diseases like malaria. It is estimated that almost 630,000 people died from malaria and malaria-related causes in 2012, and most of these cases were in African countries.
In the United States, a group of California scientists is working to develop a more effective and less costly substance(物質(zhì))to protect people from mosquitoes. The researchers are investigating the sense of smell in mosquitoes. They found the insects use the same receptor(感受器)for identifying carbon dioxide in human breath as they do for the smell of our skin. Anandasankar Ray, who is leading the investigation, says scientists tested more than a million chemical compounds(化合物)until they found a substance called Ethyl pyruvate. He says Ethyl pyruvate makes the mosquitoes' receptor inactive. ”When we apply Ethyl pyruvate to a human arm and offer it to hungry mosquitoes in a cage, very few of the mosquitoes are attracted to the human arm because only a few of them are able to smell it out,” said Ray.
Genevieve Tauxe, a member of the research team, says it was not easy to find the neurons (神經(jīng)元)of nose cells that recognise both the smell of human breath and skin. "With the device used to examine mosquitoes, we are able to insert a very small electrode(電極)into the part of the mosquitoes' nose, where its smelling neurons are and where the smell is happening," said Tauxe.
Anandasankar Ray says a product based on Ethyl pyruvate may cost less to produce than DEFT，the most effective chemical treatment now in use. He says DEFT is too costly for most people who live in areas affected by malaria.
“Perhaps by finding smells that can attack other target receptors, we will be able to improve upon DEFT and finally have the next generation of insect behavior control products," said Ray.
小題1:The best title for the passage is most probably _______________________________.
A．Scientists Find New Substance to Fight Mosquitoes
B．A New Generation of DEET Has Been Developed to Kill Mosquitoes
C．Malaria一a Serious Disease Causing 630,000 Deaths
D．Ethyl Pyruvate一an Insect Behavior Control Product
小題2:According to the passage, Ethyl Pyruvate can_______________________________.
A．kill the mosquitoes' smelling neurons
B．cause the mosquitoes to lose their sense of smell
C．result in the inactiveness of the mosquitoes' receptor
D．make the mosquitoes uninterested in human breath and skin smell
小題3:Through the passage, the writer aims to_______________________________.
A．inform readers of the new development in fighting mosquitoes
B．praise the achievements made in the battle against malaria
C．introduce a cheaper product in fighting mosquitoes
D．tell the differences between Ethyl Pyruvate and DEET
小題4:This passage most probably appears in_______________________________.
A．the column of newspaper ads
B．the health column of a magazine
C．a(chǎn) textbook of medical schools
D．a(chǎn) collection of doctors' essays

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：閱讀理解

Seven species of carp(鯉魚) native to Asia have been introduced into United States waters in recent decades, but it's four in particular－bighead, black, grass and silver－that worry ecologists, biologists, fishers and policymakers alike. Introduced in the southeast to help control weeds and parasites in aquaculture (水產(chǎn)養(yǎng)殖) operations, these fish soon spread up the Mississippi River system where they have been crowding out native fish populations not used to competing with such aggressive invaders. The carps' presence in such numbers is also harming water quality and killing off sensitive species.
Asian carp are strong to jump over barriers such as low dams. They lay hundreds of thousands of eggs at a time and spread into new habitat quickly and easily. Also, flooding has helped the fish expand into previously unattainable water bodies. And fishers using young carp as live bait have also helped the fish's spread, as they have boats going through locks up and down the Mississippi.
The federal government considers the Asian carps to be annoying species and encourages and supports “active control” by natural resources management agencies. Federal and state governments have spent millions in tax dollars to prevent the carp from making their way into the Great Lakes, but an underwater electric fence constructed to keep them out has not worked as well as hoped, and policymakers are reviewing other options now.
In the meantime, state and federal agencies are monitoring the Mississippi and its branches for Asian carp and testing various barrier technologies to prevent their further spread. For instance, the National Park Service is cooperating with the state of Minnesota's Department of Natural Resources to construct new dams that are high enough to prevent Asian carp from jumping over. The Asian Carp Regional Coordinating Committee has funded DNA monitoring in potentially affected water bodies whereby researchers can determine whether the troublesome fish are present just by the biological footprints they leave behind. Individuals can do their part by not transporting fish, bait or even water from one water body to another, and by emptying and washing boats before moving them between different water bodies.
小題1:Asian carp have been introduced to the USA in order to ________.
A．improve water quality
B．help sensitive species
C．control the number of native fishes
D．control the ecosystem in aquaculture
小題2:The measure to keep Asian carp out of the Great Lake but proved not good is ________.
A．testing various barrier technologies
B．construction of an underwater electric fence
C．Emptying and washing boats before using them.
D．monitoring the Mississippi and its branches for Asian carp
小題3:It is suggested from the passage that ________.
A．a(chǎn)quaculture operations are dangerous to the water bodies
B．scientific technology is useless in preventing Asian carp spreading
C．both the state and the individuals can make efforts to keep out Asian carp
D．Asian carp have successfully invaded the Mississippi and the Great Lakes

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：閱讀理解

Has been a dream for 30 years but now the world’s first flying car is set to hit the roads this year.

Ever since the “Back to the Future” movies lit up our screens in the 1980s, designers have dreamt of cars that could take to the sky at the push of a button(按鈕). And now pilots can order their own “roadable” plane for just￡127, 000.
The plane, which has fold-out wings that span 17. 5 feet, can be up to 115 mph. Back on the land, it can also travel at “highway speeds” in car mode(模式).
Fuelling(加燃料)the 19 feet long plane couldn’t be simpler—you just drive it into a petrol station and fill it up.
A spokeswoman said, “You can keep your ‘light-sport airplane’ in your garage. But because it needs a short runway to take to the air, you will have to drive to your local airport, fly up to 460 miles, land and drive directly to your destination(目的地). You will always be ready to drive or fly. ”
The spokeswoman added, “Never let bad weather change your trip. You can simply divert(使轉(zhuǎn)向)and continue on the ground until the weather clears. ”
There’s no risk to you—this is only the chance for you to be the first at your home field to unfold(展開)your wings and fly into the future.
小題1:According to the text, the “roadable” plane　　　.
A．can fly in the sky at “highway speeds” in car mode
B．is a kind of car with fold-out wings
C．is a little difficult to fuel　
D．can only travel on the highway
小題2:We can infer that in the “Back to the Future” movies　　　.
A．there are some skillful pilots
B．pilots have no cars to drive
C．pilots can’t afford a “roadable” plane
D．cars can fly in the sky
小題3:What does the underlined word “it” in the 5th paragraph refer to?
A．Light-sport airplane.
B．Your garage.
C．The local airport.
D．A petrol station.
小題4:The last sentence of the text aims to　　　.
A．call for people to buy the “roadable” plane
B．show people the use of the “roadable” plane
C．tell people only the “roadable” plane can fly in the future
D．a(chǎn)sk people to unfold their wings and fly into the future
小題5:If you meet with a thunderstorm in your “roadable” plane in the skies, you can　　　.
A．land in a nearby airport until it clears
B．turn back home until it clears
C．land and drive on the ground
D．fly high up to 460 miles

查看答案和解析>>

科目：高中英語(yǔ) 來源：不詳 題型：閱讀理解

The increase in tuition fees(學(xué)費(fèi)) has led to a “clear drop” in the number of English students applying for university places this autumn. There are 15,000 “missing” applicants this academic year, according to the Independent Commission on Fees. Chairman Will Hutton said: “We’re asking our young men and women to have more debt than any other country in the world — it’s higher than the average debt in the US. It’s not clear whether those lost students this year will return next year, or if it’s a storm warming of a worrying trend.”
But the commission’s report says there does not seem to be an impact on poorer communities. The commission found there was no significant change in the application rate to the key universities, such as Oxford or Cambridge. The decline （下降）in England has not been mirrored in other parts of the UK where fees have not been raised, and the drop can only partly be explained by falling numbers of young people in the population. Students from Scotland attending Scottish universities do not pay fees, while the Welsh Assembly says it will pay fees above ￡3,465 for Welsh students attending UK institutions.
The average tuition fee at English universities this year is ￡ 8,385, rising to ￡ 8,507 next year. UK and EU students have access to govemment-backed loans to pay the fees. And the survey of 1,000 pupils aged 15-18, carried out this April, found that the majority expected to go on to higher education as people continue to understand that university remains a good long term investment in their future.
A spokeswoman at the Department for Business, Innovation and Skills which is responsible for universities, said:“Students shouldn’t be forced to put off going to university for financial reasons. Most students will not have to pay in advance, and no one will have to start paying back their student loan until they start to earn at least ￡ 2l,000 per year.”
小題1:From the first paragraph, we know that __________________       .
A．it’s a trend that English students are dropping out of school
B．the rising tuition fees have a great effect on English students
C．the lost English students will find their way back
D．many English students are missing the final examinations
小題2:Why is there still a drop of applicants though fees have not been raised?
A．Because the students live in poor communities.
B．Because Welsh students will pay fees above￡3,465.
C．Because education is free for Scottish students.
D．Because there are less young students in the area.
小題3:What’s the students’ attitude to universities in the survey?
A．Most of them are willing to go to university.
B．They feel universities takes up too much time.
C．They will stop applying for university places this autumn.
D．They are anxious to go to a key university.
小題4:The spokeswoman in the last paragraph advises students to ______________
A．put off going to university
B．reduce the anxiety about the rising fees
C．pay for the fees in advance
D．pay back their loan soon after graduation

查看答案和解析>>

同步練習(xí)冊(cè)答案