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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 (喷) 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 (树脂)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(盗版). "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?
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
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.
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.
4.What is the best title of the passage?
A.Printing out everything B.Technology in the future
C.Online shopping disappearing D.Great demand for 3-D printers
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Hans was an honest fellow with a funny round good-humored face. Living alone, every day he worked in his garden. In all the countryside there was no garden so lovely as his. All sorts of flowers grew there, blooming in their proper order as the months went by, one flower taking another flower’s place, so that there were always beautiful things to see, and pleasant odors to smell.
Hans had many friends, the most devoted being the Miller. So devoted was the rich Miller to Hans that he’d never go by his garden without plucking a large bunch of flowers or a handful of sweet herbs, or filling his pockets with fruits. The Miller used to talk about noble ideas, and Hans nodded and smiled, feeling proud of having such a friend.
The neighbors thought it strange that the rich Miller never gave Hans anything in return, though he had hundreds of sacks of flour, many cows and sheep, but Hans never troubled his head about these, and nothing gave him greater pleasure than to listen to all the wonderful things about the unselfishness of true friendship.
In spring, summer, and autumn Hans was very happy, but when winter came, and he had no fruit or flowers to sell, he suffered from cold and hunger. Though extremely lonely, the Miller never came to see him then.
“There’s no good in going to see Hans while the snow lasts.” The Miller said to his wife, “When people are in trouble they shouldn’t be bothered. So I’ll wait till the spring comes when he’s happy to give me flowers.”
“You’re certainly very thoughtful,” answered his wife, “It’s quite a treat to hear you talk about friendship.”
“Couldn’t we ask Hans up here?” said their son. “I’ll give him half my meal, and show him my white rabbits.”
“How silly you are!” cried the Miller. “I really don’t know what’s the use of sending you to school. If Hans came up here, and saw our warm fire, our good supper, and our red wine, he might get envious, and envy is a most terrible thing, and would spoil anybody’s nature. I am his best friend, and I’ll always watch over him, and see that he’s not led into any temptation. Besides, if Hans came here, he might ask me for some flour. Flour is one thing, and friendship is another, and they shouldn’t be confused. The words are spelt differently, and mean quite different things. Everybody can see that.” He looked seriously at his son, who felt so ashamed that he hung his head down, and grew quite scared, and began to cry into his tea.
Spring coming, the Miller went down to see Hans. Again he talked about friendship. “Hans, friendship never forgets. I’m afraid you don’t understand the poetry of life. See, how lovely your roses are!”
Hans said he wanted to sell them in the market to buy back his things which were sold during the hard time of the winter.
“I’ll give you many good things. I think being generous is the base of friendship.” said the Miller. “And now, as I’ll give you many good things, I’m sure you’d like to give me some flowers in return. Here’s the basket, and fill it quite full.”
Poor Hans was afraid to say anything. He ran and plucked all his pretty roses, and filled the Miller’s basket, imagining the many good things promised by the Miller.
The next day he heard the Miller calling: “Hans, would you mind carrying this sack of flour for me to market?”
“I’m sorry, but I am really very busy today.”
“Well,” said the Miller, “considering that I’m going to give you my things, it’s rather unfriendly of you to refuse. Upon my word, you mustn’t mind my speaking quite plainly to you.”
Poor Hans was driven by his friendship theory to work hard for his best friend, leaving his garden dry and wasted.
One evening Hans was sitting by fire when the Miller came.
“Hans,” cried the Miller, “My little boy has fallen off a ladder and hurt himself, and I’m going for the Doctor. But he lives so far away, and it’s such a bad windy night. It has just occurred to me that you can go instead of me. You know I’m going to give you my good things, so you should do something for me in return.”
“Certainly,” cried Hans. He struggled into the stormy night, and got the doctor to ride a horse to the Miller’s house in time to save the boy. However, Hans got lost in the darkness, and wandered off into a deep pool, drowned.
At Hans’ funeral, the Miller said, “I was his best friend. I should walk at the head of the procession.” Every now and then he wiped his eyes with a handkerchief.
1.From the passage, we can learn that Hans ___________.
A.was extremely wise and noble
B.was highly valued by the Miller
C.admired the Miller very much
D.had a strong desire for fortune
2.“Flour is one thing, and friendship is another” can be understood as ___________.
A.“Different words may mean quite different things.”
B.“Interest is long-lasting while friendship is flexible.”
C.“I’m afraid you don’t understand the poetry of life.”
D.“I think being generous is the base of friendship.”
3.From the Miller’s talk at home, we can see he was ___________.
A.serious but kind
B.helpful and generous
C.caring but strict
D.selfish and cold-hearted
4.What’s the main cause of Hans’ tragedy?
A.True friendship between them.
B.A lack of formal education.
C.A sudden change of weather.
D.Blind devotion to a friend.
5.The author described the Miller’s behavior in order to ___________.
A.entertain the readers with an incredible joking tale
B.show the friendship between Hans and the Miller
C.warn the readers about the danger of a false friend
D.persuade people to be as intelligent as the Miller
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Shower Radio --- Warranty (保单) and Directions
Introduction
Congratulations! You are now the owner of a So Fine Shower Radio! It is sure to provide entertainment for many hours. In addition, the radio features a timer for those days when you are in a hurry.
Before using the radio, please read all directions, fill out and mail in the warranty card, and put warranty information in a safe place. Although we do not expect problems with the radio, you may need to refer to the warranty information at a later time.
Warranty
This radio is warranted for a one-year period that begins on the date of purchase. If it fails to work because of a problem of materials, please return it to the following address: So Fine Radio Corp, 1279 Delta Way, Monga.
We will not pay shipping costs for returning the radio to us. We will either repair or replace the radio. Please allow at least four weeks for looking at the problem and repairing the radio. If you have not heard from us within six weeks, call our customer service department at 1-800-123.
Radios that are returned to us for problems other than a problem of materials will be subject to service fee as well as the cost of the repairs. Customers will be informed of the charge by postcard. Radios will not be returned to customers until these fees are paid.
Directions
Please read all directions before using it.
Please note that this radio is designed and built to operate well in a damp environment. The self-contained batteries and circuits (线路) are contained in the enclosed space that will bear heat and humidity.
To Operate the Radio
1. Put two AA batteries in the enclosed space at the back of the radio. Be certain to follow the diagram, or the batteries will not provide electricity. The radio should NOT be adapted in order to be fixed into the wall; this will damage the waterproofing (防水).
2. Turn the POWER dial in a clockwise direction until it clicks. Continue turning the dial until the desired volume is achieved.
3. To find the desired station, press the station selector button. The tuner (调谐器) will automatically go to the next highest signal. The station’s call number will be visible in the digital screen. When the station with the highest frequency has been reached, the selector will start again at the lowest frequency.
4. To switch between AM and FM stations, move the sliding AM/FM switch.
To Operate the Timer
1. Press the Timer Set button. Each time the button is pressed, five minutes will be put on the timer. The amount of time on the timer will be visible for five seconds on the digital screen.
2. When the time on the timer doesn’t work, a beep will sound for ten seconds. The timer may be reset again one minute.
Troubleshooting
Before returning the radio for service, please check the following items:
Problem: Radio cannot be heard.
1. Check batteries to be certain that they still have power and are put in correctly.
2. Check Power/Volume Control.
Problem: Timer does not work.
1. Check batteries to be certain that they still have power and are put in correctly.
2. Follow directions above for setting timer.
3. Turn the power control on. The timer will not work when the radio is not on.
4. Adjust the volume control which regulates the volume of the beep as well as the radio volume.
1.The digital screen will show both ______.
A.the volume level and the AM/FM indicator
B.the AM/FM indicator and the radio station
C.the time remaining on the timer and the date
D.the call number and time on the timer
2.Which of the following is covered within this text?
A.How to operate the radio and the timer.
B.What other owners say about the radio.
C.Who will benefit from using the radio.
D.Where to purchase the radio.
3.What question might a reader still have about this product?
A.How can I know the service fee?
B.Where should I send a nonworking radio?
C.How is the radio placed in the shower?
D.What kind of batteries does the radio use?
4.According to the text, what should you do before returning the radio for service?
A.Contact the store where you purchased it.
B.Check whether certain problems exist.
C.Call the producer for a repair number.
D.Consult the telephone book for local repair service.
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1826, a Frenchman named Niepce needed pictures for his business .But he was not a good artist.So he invented a very simple camera (照相机).He put it in a window of his house and took a picture of his garden .That was the first photo.
The next important date in the history of photography was 1837. That year, Daguerre, another Frenchman, took a picture of his studio. He used a new kind of camera and a different processs. In his pictures, you could see everything very clearly, even the smallest details. This kind of photograph was called a daguerreotype.
Soon, other people began to use Daguerre's process. Travellers brought back daguerreotypes from all around the world. People photographed famous buildings, cities and mountains.
In about 1840, the process was improved. Now photographers could take pictures of people and moving things. The process was not simple. The photographers had to carry lots of film and processing equipment. But this did not stop the photographers, especially in the United States, where from the 1840s daguerreotype artists were popular in most cities.
Mathew Brady was a well-known American photographer. He took many pictures of famous people. The pictures were unusual because they were very life-like and full of personality.
Brady was also the first person to take pictures of war. His 1862 Civil War pictures showed dead soldiers and ruined cities. They made the war seem more real and more terrible.
In the 1880s, new inventions began to change photography. Photographers could buy film readymade in rolls. So they did not have to make the film immediately. They could bring it back to their studios and develop it later, meaning that they did not have to carry lots of equipment. And finally, the invention of the small handheld camera made photography less expensive.
With the small camera, anyone could be a photographer. People began to use cameras just for fun. They took pictures of their families, friends and favourite places. They called these pictures "snapshots".
Photographs became very popular in newspapers in the 1890s. Soon magazines and books also used documentary photographs. These pictures showed true events and people. They were much more real than drawings.
Photography had turned into a form of art by the beginning of the 20th century. Some photographs were not just copies of the real world. They showed ideas and feelings, like other art forms.
1.The passage is mainly about______________.
A.the invention of cameras
B.a kind of new art -- photography
C.the development of photography
D.the different uses of cameras in history
2.The first pictures of a war were taken by ____________.
A.a French photographer in the 1840s
B.an American photographer in the 1860s
C.a German reporter in the 1880s
D.a French artist in the 1890s
3.Which of the following statements is TRUE about the photography in the 19th century?
A.It was mainly based on the invention of the first photograph.
B.Photographers were popular in the United States because they carried lots of equipment.
C.Photographers used to make film themselves and developed it immediately after taking a photo.
D.Small handheld cameras made it possible for anyone to become a gifted photographer.
4.In which order are the following statements mentioned in the passage?
a. Photographs became popular in newspapers.
b. Photographers carried processing equipment when taking pictures.
c. The invention of small handheld cameras made photography easier.
d. Daguerre invented a kind of photograph called daguerreotype.
e. Brady took pictures of famous people.
A.e,a, d, b, c B.d, b, e, c, a
C.b, e, c, a, d D.d, c, e, a , b
5.Photography can also be an art form because artists can ____________.
A.take anything they like
B.keep a record of real life
C.take photos of the famous
D.show ideas and feelings in pictures
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If you want to get the most out of the study of a language, you must also read for pleasure: novels, plays, travel books, and so on. And in reading books of this kind the important thing is to get on with the reading; to try to grasp what the writer is going to tell you in the book as a whole. This is impossible if you stop and think over the meaning of every single word which happens to be unfamiliar. You can not enjoy a story if you stop half a dozen times on every page in order to look up words in the dictionary. You may even prevent yourself from understanding the story as a whole by doing this.
When you are reading books of this kind, therefore, you will usually have to rely mainly on the context to help you. If you meet an unfamiliar word, do not let it take too much of your attention from the main thread(主线) of the story. In all probability you will meet the same word again a few pages later on in a slightly different context, and each time you see it that your understanding of it will become more exact.
1.The phrase “to get on with reading” in the passage has the same meaning as “_________”.
A.to try to grasp the meaning of every sentence in the book
B.to try to catch the meaning of every word in the book
C.to try to understand all the writer is going to tell you
D.to try to understand the main idea of the book
2.When you meet new words in reading such kinds of books, you’d better _________.
A.stop and look them up in a dictionary B.stop and think them over
C.try to guess their meanings from the context D.have none of them
3.From the passage the best way to read novels, plays and travel books is _____.
A.to read very slowly B.to read quickly and not too carefully
C.to read very carefully D.to read very seriously
4.The best title for this passage is “___________”.
A.Read for Pleasure B.Get on with the Books
C.Reading Skills D.The Importance of Reading
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