精英家教網 > 高中英語 > 題目詳情
See a cell phone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future, you'll be able to get it in minutes just by hitting "print" on your computer.
You might find it hard to believe that you could actually "print" an object like you would a picture. But it is not that hard to understand how it would work. Just as a traditional printer sprays (噴) ink onto paper line by line, modern 3-D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape.
Instead of ink, the materials the 3-D printer uses are mainly plastic, resin (樹脂)and certain metals. The thinner each layer is --- from a millimeter to less than the width of a hair ---  the smoother and finer the object will be.
This may sound like a completely new technology, but the truth is that 3-D printing has been around since the late 1980s. Back then, it was hardly affordable for most people, so few knew about it.
Last year, though, saw a big change in the 3-D printing industry--- printers became much cheaper. For example, 10 years ago a desktop 3-D printer might have cost £20,000 (200,000 yuan), while now they cost only about £ 1,000, according to the BBC.
Taken out of the factory and introduced to more diverse and common uses, 3-D printing can create just about anything you can think of ---flutes (笛子), bikinis, jewelry, aircraft parts and even human organs. In fact, scientists from Cornell University in New York have just made an artificial ear using a 3-D printer, according to Science Daily. The fake ear looks and acts exactly like a natural one.
However, as 3-D printing becomes more common, it may bring about certain problems --- such as piracy(盜版). "Once you can download a coffee maker, or print out a new set of kitchen utensils (餐具) on your personal 3-D printer, who will visit a retail (零售的) store again?" an expert in 3-D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3-D printer to print out a fully functioning gun?
小題1:According to the article, in the future, the 3-D printing technology will ___.
A．enable people to make better purchases online
B．be applied as widely in our daily lives as computers
C．change the way we make many products
D．shorten the time it takes for people to get what they buy online
小題2:What was the big event happening in the 3-D printing industry last year?
A．The 3-D printing technology was taken out ofthe factory.
B．The 3-D printer became more affordable forconsumers.
C．The 3-D printer was used for medical treatmentfor the first time.
D．3-D printing technology began to be used invarious fields.
小題3:How is the last paragraph developed?
A．By analyzing a cause and an effect.B．By making comparisons.
C．By giving examples.D．By presenting research findings.
小題4:What is the best title of the passage?
A．Printing out everythingB．Technology in the future
C．Online shopping disappearingD．Great demand for 3-D printers

小題1:C
小題2:B
小題3:C
小題4:A

試題分析：本文介紹了三維印刷機的情況，它通常被簡稱為3D印刷機，其工作原理非常簡單。首先在電腦上繪制產品草圖，并細化修補其形狀和著色。接著按下印刷按鈕，印刷機開始運作，產品慢慢成型。3D印刷術將隨著技術本身的不斷改進迅速鋪開，使用成本急劇下降。但是本文還給出了一些擔憂，萬一能夠印出槍支了，不就對社會的治安帶來一些麻煩了。
小題1:細節(jié)理解題。根據(jù)In the near future, you'll be able to get it in minutes just by hitting "print" on your computer.改變了我們制造產品的方式,故選C
小題2:細節(jié)理解題。根據(jù)Last year, though, saw a big change in the 3-D printing industry--- printers became much cheaper. For example, 10 years ago a desktop 3-D printer might have cost £20,000 (200,000 yuan), while now they cost only about £ 1,000, according to the BBC.
人們能夠買得起了,因為價格降下來了,故選B。
小題3:細節(jié)理解題。根據(jù)it may bring about certain problems舉例說明它的普遍性,故選C。
小題4:標題歸納題。根據(jù)全文來看3D印刷機能接觸到的領域很廣，故選A。
點評：做標題歸納題時還要遵循三個原則，即注意題的醒目性、概括性和針對性。醒目性——我們所判斷的標題如果放在文章的最前面，應該能使讀者一看到標題就對其內容發(fā)生興趣，即，吸引讀者的眼球；概括性——指標題應最大限度地覆蓋全文，囊括文章的主要內容，體現(xiàn)文章的主題；針對性——我們所選的標題不能偏題，必須指向具體文意，因此也應具備強烈的針對性。
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

The Greenbelt, a wide belt of open land around the cities and towns of the San Francisco Bay Area, includes about 3.75 million of the Bay Area’s 4.5 million acres. The Bay Area Greenbelt is one of the largest areas of open land in any U.S. urban area. Open land is land that has few buildings and lots of natural areas. The Greenbelt’s open land includes parks, forests, beaches, and more than 8,500 farms.
What are the advantages of the Greenbelt?
The Greenbelt has many advantages for people in the Bay Area, which include:
l walking and biking areas close to the cities and towns;
l places for wild plants and animals;
l cleaner air and water;
l income from farms.
Is the Greenbelt in danger?
Five hundred seventy thousand acres of the Greenbelt are in danger. There are builders who want to build suburbs on them. If those acres become suburbs, many things will change:
l the urban and suburban area will almost double;
l many farms will disappear;
l traffic will become worse; 
l the air will become dirtier.
What is Greenbelt Alliance (聯(lián)盟)?
Greenbelt Alliance, an organization that saves land in the San Francisco Bay Area, works alone and with other groups to save the Greenbelt in four ways:
1. Try to persuade people to build new buildings on land that is already urban, not on open land.
2. Make sure that the city and town governments are all making plans to save the Greenbelt.
3. Help Bay Area towns and cities to buy pieces of open land to make into natural areas.
4. Teach people in the Bay Area why the Greenbelt is important and what they can do to help save it.
小題1:What can we learn about the Greenbelt from the first paragraph?
A．The Greenbelt is the largest open land in the United States.
B．The Greenbelt covers much more than half of the Bay Area.
C．There are few farms on the open land of the Greenbelt.
D．There are more than 8,500 natural areas on the Greenbelt.
小題2:One of the advantages of the Greenbelt for people in the Bay Area is __________.
A．convenience for exerciseB．income from sightseeing
C．cleaner city streetsD．more plants and animals
小題3:The Greenbelt is in danger because __________.
A．traffic is getting worse
B．some plans to build suburbs on it
C．the suburban area has doubled
D．pollution is becoming serious
小題4:Which of the following is TRUE about Greenbelt Alliance?
A．It builds new buildings on open land.
B．It buys large open land for the Bay Area.
C．It educates people how to save the Greenbelt.
D．It helps the city governments make plans.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：完形填空

完形填空（共20小題；每小題1分，滿分20分）
The world always makes way for the dreamer !
When I was twelve years old, my father took me to see Zig Zigler. I remember sitting in that dark hall listening to Mr. Zigler   36  everyone’s spirits up to the ceiling. I  37  there feeling like I could do anything. When we got to the car, I turned to my father and said, “Dad, I want to   38  people feel like that.” My father asked me   39   I meant. “I want to be a motivational(激發(fā)積極性的)speaker just like Mr. Zigler,” I replied.  A（An）  40  was born.
Recently, I began seeking my dream of motivating others.  41  a four-year relationship with Fortune 100 Company   42  as a sales-trainer and ending as a regional(地區(qū)的) sales manager, I left the company at the height of my   43 .  Many people were  44  that I would leave after earning a six-figure income(收入). And they asked   45  I would risk everything for a dream.
I made my   46   to start my own company and leave my worryingless position(職位)after 47  a regional sales meeting. The vice-president of our company made a   48   that changed my life. He asked us, “If a god would offer you three wishes, what would they be?” After giving us a   49  to write down the three wishes, he then asked us, “Why do you need a  50   ?” I would never forget the power I felt at that moment. I realized that   51  I had accomplished(完成；實現(xiàn)) in the past had prepared me for this moment. I was ready and didn’t need a god’s help to become a motivational speaker. A motivational speaker was   52  .
Having made that decision, I was immediately   53 . One week after I gave notice, my husband was laid off (下崗) from his job, and now we had no  54  . But I held fast to my dream. The wonder really began to happen. In a short time my husband found a better job. And I was able to book several   55  engagements（業(yè)務）with new customers. I discovered the unbelievable power of dreams.
小題1:
A．riseB．doC．putD．raise
小題2:
A．leftB．cameC．arrivedD．reached
小題3:
A．getB．hopeC．makeD．cheer
小題4:
A．thatB．whatC．whichD．if
小題5:
A．dreamB．ideaC．girlD．speaker
小題6:
A．AfterB．BeforeC．BecauseD．While
小題7:
A．beginningB．workingC．acting D．regarding
小題8:
A．lifeB．loveC．moneyD．career(事業(yè))
小題9:
A．disappointed B．moved C．surprised D．delighted
小題10:
A．whenB．whyC．if D．how
小題11:
A．planB．promiseC．decisionD．mind
小題12:
A．attendingB．joiningC．enteringD．holding
小題13:
A．newspaperB．bookC．reportD．speech
小題14:
A．dayB．secondC．weekD．moment
小題15:
A．loveB．workerC．godD．company
小題16:
A．everythingB．anythingC．nothingD．something
小題17:
A．aliveB．deadC．missingD．born
小題18:
A．examinedB．searchedC．foundD．tested
小題19:
A．helpB．harmC．incomeD．money
小題20:
A．sellingB．speakingC．writingD．listening

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

To me, the ocean is our greatest wilderness. I love swimming in it , surfing its waves, watching it from shore and thinking about all the life living unseen under the surface.
When I take my little kids to check out tide pools, we’re overjoyed when we find a sea star or some shellfish. Lately, though, I've noticed a change in my favorite pools: there are more sea grasses and fewer animals with shells.
I can't help feeling these small changes portend something more troubling about our oceans. It matches what scientists are telling us: our oceans are being troubled by carbon dioxide that threatens corals, colorful fish, salmon, sea otters, even whales. Our oceans are facing a major change.
Every hour, a million tons of carbon dioxide from cars, factories and power plants rain down on the world’s oceans. Carbon pollution brings about a chemical reaction that turns sea water more acidic (酸的) and takes away things important for sea animals .
Some of us are already feeling the effects of this growing crisis（危機）. Shellfish farmers in the Pacific Northwest have reported a decrease in natural and farmed oysters(牡蠣). Just this week, a new studyproved the link between the huge reduction in the numbers of oysters and ocean acidification. As polar waters become more acidic, Alaskan fishermen are troubled by the future of smaller fish.
Without action, ocean acidification will have a disastrous influence on the food chain, affecting not only sea life but the people who depend on it for food and their living. Already, our oceans have become 30 percent more acidic since preindustrial times, and it gets worse every day. We can stop this frightening dream, but only if we act now.
That's why the Center for Biological Diversity has started a petition (請愿書) requesting President Obama and the Environmental Protection Agency to develop a plan to deal with ocean acidification. Decisive action can save sea life as we know it.
Now it isn’t too late to save our oceans and sea life. With immediate action to reduce carbon dioxide release we can start taking important steps today to deal with this disastrous situation. Join me in our petition calling for a national plan to save our oceans.
小題1:The author’s recent visits to the tide pool brought her ___ .
A．happinessB．angerC．concernD．comfort
小題2:The underlined word “portend” in Paragraph 3 probably means ___ .
A．predictB．preventC．replaceD．reduce
小題3:What the author worries about most is ____ .
A．the harm of sea grasses
B．carbon pollution in the sea
C．that the petition may be turned down
D．how fishermen can make a living in the future
小題4:What is the main purpose of the text ?
A．To inform.B．To educate.C．To persuade .D．To instruct.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

The earth is not the only body that travels around the sun. With it are eight other planets, fellow members of the sun’s family.
Two of them, Mercury (水星) and Venus, are nearer while the other six, namely Mars, Jupiter, Saturn, Uranus, Neptune and Pluto, also in their given order from the sun, are farther from the sun than the earth is. The farther they are, the longer trips they make around the sun. People noticed long ago that these traveling bodies moved around in the sky in definite paths. It is a force called gravity that holds them in their paths.
We know that every little bit of matter in the universe pulls upon every other bit of matter. The pull between two bodies is proportional (成比例的) to the product of their masses. Because the sun is so large the pull between the sun and the planets are thus great. If it were not for this pull, the planets would fly off into space. In the same way there exists a pull between the earth and the moon, which keeps the moon traveling in its orbit around our planet, the earth. Gravity holds you to its surface, and pulls back to it the ball which you throw into the air. Of course the ball also pulls on the larger earth but the earth is so much larger that the pull is not noticed.
Now remember that large bodies exert a greater pull than smaller ones which contain less material. But each object in the universe, no matter how small, pulls on all other objects to some degree.
小題1:There are ________ that travel around the sun in the sun’s family.
A．nine planetsB．eight planets
C．one star and ten planetsD．the earth and the sun
小題2:Which two planets make the longest trips around the sun among all the planets in the solar system?
A．Mercury and Venus.B．Neptune and Pluto.
C．Saturn and Uranus.D．Mars and Jupiter.
小題3:From the passage we can see__________
A．all the objects, big or small, must exert the same pull on one another
B．large objects exert the same pull on anybody as small objects
C．small objects exert the same on large ones
D．each object in the universe exerts a pull on all other objects
小題4:From the sentence “The pull between two bodies is proportional to the product of their masses.” We can infer that the pull between__________
A．the sun and the moon is greater than between the sun and the earth
B．the earth and the moon is greater than that between the sun and the earth
C．the sun and the earth is greater than that between the earth and the moon
D．the sun and the earth is the same as that between the earth and the moon

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

The forces that make Japan one of the world's most earthquake-prone（有地震傾向的） countries could become part of its long-term 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 high-tech companies are leaders in geothermal（地熱的） 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 thermal-electric 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 account 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 10cm 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 decades-long 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, Fuji 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 change of rulesB．financial support
C．local people's helpD．high technology
小題4:Geothermal energy is considered as a long-term program by _____．
A．Yoshiyasu TakefujiB．Hideaki Matsui
C．Shigeto YamadaD．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 來源：不詳 題型：閱讀理解

根據(jù)短文內容，從短文后的選項中選出能填入空白處的最佳選項。選項中有兩項為多余選項。
For centuries, people have wondered about the strange places that they seem to visit in their sleep. ___小題1:___ However, they have been valued as necessary to a person’s health and happiness.
Historically people thought dreams contained messages from God. It was only in the twentieth century that people started to study dreams scientifically believing that they tell about a person’s character. ___小題2:__ He believed that dreams allow a person to express fantasies or fears, which would be socially unacceptable in real life.
The second theory to become popular was Carl Jung’s compensation theory. Jung, a former student of Freud, said that the purpose of a dream is not to hide something, but rather to communicate it to the dreamer. ___小題3:__ Thus, people who think too highly of themselves may dream about falling; those who think too little of themselves dream of being heroes.
Using more recent research, William Domhoff from the University of California found that dreaming is a mental skill that needs time to develop in humans. ___小題4:___  Until they reach age five, they can not express very well what their dreams are about. Once people become adults, there is little or no change in their dreams. The dreams of men and women differ.
The meaning of dreams continues to be difficult to understand. ___小題5:___ If you dream that a loved one is going to die, do not panic. The dream may have meaning, but it does not mean that your loved one is going to die.
A．Dreams make up for what is lacking in waking life.
B．However, people should not take their dreams as reality.
C．They have been considered as meaningless nighttime journeys.
D．It gives scientists chances to better understand human mind.
E．Children do not dream as much as adults.
F．They think their mind is trying to tell them something.
G．First, there was Sigmund Freud’s theory.

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

“How can I learn English well?” This is a question many students ask. In my opinion, the most effective way is to learn lessons by heart. If you can recite the text and write it out, you’ve learned it fairly well. And if you can tell, in your own words, what the lesson says you’re a very successful learner indeed. Your English will be quite perfect.This is a difficult task. However, if you try to learn by heart only part of each lesson, you’ll find it not half so hard as you might have thought. Learning this way, you will make rapid progress. Of course, writing is also necessary. It helps you a lot on our way to success in English. Equally important is to feel the language. You should be able to laugh at jokes and be shocked at bad news. When using English, try to forget your mother tongue. Instead of helping you, your own language gets in your way. So, never try to see English through translation.
小題1:In the writer’s opinion, the most effective way in learning English is ____.
A．to practise speaking, writing and feeling it
B．to forget your own native language
C．to translate everything into his own language
D．to memorize the English words and grammatical rules
小題2:“Instead of helping you, your own language gets in your way.”This sentence means that memorizing your own language can ________.
A．help you to study English wellB．stop you mastering English
C．make English easy to learnD．help you notice mistakes
小題3:Equally important is to feel the language. “to feel the language” here means________.
A．to get a knowledge of English by touching
B．to be able to read and write English
C．to translate English into your own by imagining
D．to be able to experience the rich sensation of the language

查看答案和解析>>

科目：高中英語 來源：不詳 題型：閱讀理解

Do you want to live forever? By the year 2050, you might actually get your wish — if you are willing to leave your biological body and live in silicon circuits （半導體電路）．But long before then, perhaps as early as 2020, some measures will begin offering a semblance of immortality （虛擬的永生）.
Researchers are confident that technology will soon be able to track every waking moment of your life. Whatever you see and hear, all that you say and write, can be recorded, analyzed and added to your personal chronicles （履歷）. By the year 2030, it may be possible to catch your nervous systems through electrical activities, which would also keep your thoughts and emotions.
Researchers at the laboratories of British Telecommunications have given the name of this idea as Soul Catcher. Small electronic equipment will make preparation for Soul Catcher. It would use a wearable supercomputer, perhaps in a wristwatch, with wireless links to micro sensors under your scalp（頭皮） and in the nerves that carry all five sensory signals. So wearing a video camera would no longer be required.
At first, the Soul Catcher's companion system — the Soul Reader — might have trouble copying your thoughts in complete details. Even in 2030, we may still be struggling to understand how the brain is working inside, so reading your thoughts and understanding your emotions might not be possible. But these signals could be kept for the day when they can be transferred to silicon circuits to revitalize minds everlasting entities （永生實體）. Researchers can only wonder what it will be like to wake up one day and find yourself alive inside a machine．
For people who choose not to live in silicon, semblance of immortality would not be as useless as they thought. People would know their lives would not be forgotten, but would be kept a record of the human race forever. And future generations would have a much fuller understanding of the past. History would not be controlled by just the rich and powerful, Hollywood stars, and a few thinkers in the upper society.
小題1:The main idea of this passage is that _______．
A．human beings long for living forever
B．there are many difficulties in making the Soul Catcher
C．people might live forever as technology develops
D．the invention of Soul Catcher has great importance
小題2:According to this passage, a Soul Catcher will be ______．
A．a new machine on which research measures have already been made
B．a new invention in order to catch and keep human's thoughts and emotions
C．made by British scientists to offer something that looks like living forever
D．made of silicon circuits which can catch people's nervous activity
小題3:According to the writer, semblance of immortality is ______．
A．to be a reality sooner or laterB．far from certain
C．just an idea that couldn't t be realized at allD．a fading hope
小題4:The meaning of the underlined word "revitalize" in the fourth paragraph is close to        .
A．make deadB．make famous C．make knownD．make active

查看答案和解析>>

同步練習冊答案