See a cellphone 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 题目和参考答案——青夏教育精英家教网—

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See a cellphone 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 ink onto paper line by line, modern 3D 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 3D printer uses are mainly plastic, resin(树脂) and certain metals. The thinner each layer is—from a millimetre 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 3D printing has been around since the late 1980s. Back then, it was barely affordable for most people, so few knew about it.
Last year, though, saw a big change in the 3D printing industry—printers became much cheaper. For example, 10 years ago a desktop 3D printer might have cost ￡20，000, 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, 3D printing can create just about anything you can think of—flutes , 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 3D printer, according to Science Daily. The fake ear looks and acts exactly like a natural one.
However, as 3D printing becomes more common, it may bring about certain problems—such as piracy. “Once you can download a coffee maker, or print out a new set of kitchen utensils (餐具) on your personal 3D printer, who will visit a retail store again？” an expert in 3D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3D printer to print out a fully functioning gun?

1.According to the article, in the future, the 3D printing technology will _______.
A. enable people to make better purchases online

B. change the way we make many products
C. be applied as widely in our daily life as computers
D. shorten the time it takes for people to get what they buy online

2.What happened in the 3D printing industry last year?
A. The 3D printing technology was taken out of the factory.
B. The 3D printing technology began to be used in various fields.
C. The 3D printer was used for medical treatment for the first time.
D. The 3D printer became more affordable for consumers.

3.What is the best title of the passage?
A. Great Demand for 3D Printers B. Technology in the Future
C. Online Shopping Disappearing D. Printing out Everything

4.How is the last paragraph developed?
A. By giving examples.

B. By making comparisons.
C. By analyzing the cause and effect.

D. By presenting research findings.

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The Pacific island nation of Nauru used to be a beautiful place. Now it is an ecological disaster area. Nauru's heartbreaking story could have one good consequence-other countries might learn from its mistakes.

For thousands of years, Polynesian people lived in the remote island of Nauru, far from western civilization. The first European to arrive was John Fearn in 1798. He was the British captain of the Hunter, a whaling ship. He called the island Pleasant Island.

However, because it was very remote, Nauru had little communication with Europeans at first. The whaling ships and other traders began to visit, bringing guns and alcohol. These elements destroyed the social balance of the twelve family groups on the island. A ten-year civil war started, which reduced the population from 1,400 to 900.

Nauru's real troubles began in 1899 when a British mining company discovered phosphate(磷酸盐)on the island. In fact, it found that the island of Nauru was nearly all phosphate, which was a very important fertilizer for farming. The company began mining the phosphate.

A phosphate mine is not a hole in the ground; it is a strip mine. When a company strip-mines, it removes the top player of soil. Then it takes away the material it wants. Strip mining totally destroys the land. Gradually, the lovely island or Nauru started to look like the moon.

In 1968, Nauru became one of the richest countries in the world. Every year the government received millions and millions of dollars for its phosphate.

Unfortunately, the leaders invested the money unwisely and lost millions of dollars. In addition, they used millions more dollars for personal expenses. Soon people realized that they had a terrible problem—their phosphate was running out. Ninety percent of their island was destroyed and they had nothing. By 2000, Nauru was financially ruined. Experts say that it would take approximately$433, 600, 000 and more than 20 years to repair the island. This will probably never happen.

1.What was Nauru like before the Europeans came?

A． Rich and powerful]

B． Modern and open

C． Peaceful and attractive

D． Greedy and aggressive

2.The ecological disaster in Nauru resulted from .

A． soil pollution

B． phosphate overmining

C． farming activity

D． whale hunting

3.Which of the following was a cause of Nauru's financial problem?

A． Its leaders misused the money

B． It spent too much repairing the island

C． Its phosphate mining cost much money

D． It lost millions of dollars in the civil war.

4.What can we learn about Nauru from the last paragraph?

A． The leaders will take the experts' words seriously

B． The phosphate mines were destroyed

C． The island was abandoned by the Nauruans

D． The ecological damage is difficult to repair.

They wear the latest fashions with the most up-to-date accessories(配饰)．Yet these are not girls in their teens or twenties but women in their sixties and seventies．A generation which would once only wear old-fashioned clothes is now favoring the same high street looks worn by those half their age．

Professor Julia Twiggy, a social policy expert，said，“Women over 75 are now shopping for clothes more requently than they did when they were young in the 1960s．In the 1960s buying a coat for a woman was a serious matter．It was an expensive item that they would purchase only every three or four years—now you can pick one up at the supermarket whenever you wish to．Fashion is a lot cheaper and people get tired of things more quickly．” Professor Twiggy analyzed family expending data and found that while the percentage of spending on clothes and shoes by women had stayed around the same—about 5 or 6 percent of spending，the amount of clothes bought had risen sharply．

The professor said，“Clothes are now 70 percent cheaper than they were in the 1960s because of the huge expansion of production in the Far East．In the 1960s Leeds was the heart of the British fashion industry and that was where most of the clothes came from，but now almost all of our clothes are sourced elsewhere．Everyone is buying more clothes but in general we are not spending more money on them．’’

Fashion designer Angela Barnard，who runs her own fashion business in London，said older women were much more affected by celebrity style than in previous years．She said,“When people see stars such as Judi Dench and Helen Mirren looking attractive and fashionable in their sixties，they want to follow them．Older women are much more aware of celebrities．There’s also the boom in TV programmers showing people how they can change their look，and many of my older customers do yoga to stay in shape well in their fifties．When I started my business a few years ago，my older customers tended to be very rich，but now they are what I would call ordinary women. My own mother is 6l and she wears the latest fashions in a way she would never have done ten years ago．”

1.It can be concluded that old women tend to wear the latest fashions today mainly because___________．

A．they get tired of themselves more quickly

B．TV shows teach them how to stay in shape

C. they feel much younger now

D．clothes are much cheaper than before

2.What can we learn about old women in terms of fashion?

A．They are often ignored by fashion designers．

B．They are now mole easily influenced by stars．

C．They are regarded as pioneers in the latest fashion．

D．They are more interested in clothes because of their old age．

3.Which is the best possible title of the passage?

A．Age Is No Barrier for Fashion Fans．

B．The More Fashionable，the Less Expensive．

C．Unexpected changes in Fashion．

D．Boom of the British Fashion Industry

During the discussion, Jack ______pointed out that blogs are better than books for their convenience, lower price, and larger range of writing while others kept silent.

A.otherwise B. alone C. alongside D. alike

完形填空,阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上将该项涂黑。

While attending a conference, I returned to my hotel room late one evening. The overhead light outside my door was burned out and I had finding the keyhole. When I to open the door, I around the wall for a light switch. I found a plate where a switch was installed... but no switch!

Not discouraged easily, I remembered a lamp by the bed when I laid my luggage in the day. I found the bed in the and then the lamp, but when I switched it on, nothing ! I thought that perhaps if I opened the curtains I might be able to use whatever light comes in from the ___ to find another lamp. So I my way slowly across the room to the curtains and... no drawstring! I finally stumbled（跌跌撞撞地走）around I found a desk lamp which actually !

That evening I discovered in a whole new way just how dark the world _____ be and how necessary light is! But even more necessary than light is the light that shines from people — the light of and faith. Because, for many people, the world is a dark and place. For someone today just may be stumbling in discouragement or sadness or fear and in of some light. So let your light shine. Whatever light you may be a beacon of hope and encouragement. And if you feel that your light is a candle in a forest remember — there isn’t enough darkness in all the world to the light of one small candle.

1.A. confidence B. respect C. admiration D. difficulty

2.A. managed B. failed C. wished D. meant

3.A. touched B. felt C. sensed D. looked

4.A. already B. never C. still D. once

5.A. equipping B. producing C. spotting D. removing

6.A. later B. earlier C. lower D. upper

7.A. light B. dark C. room D. corner

8.A. happened B. operated C. fired D. developed

9.A. machine B. street C. room D. car

10.A. wound B. forced C. made D. lost

11.A. after B. until C. while D. since

12.A. helped B. affected C. worked D. inspired

13.A. can B. shall C. will D. must

14.A. mental B. psychological C. electrical D. physical

15.A. existence B. love C. truth D. wisdom

16.A. lonely B. colourful C. friendly D. complex

17.A. short B. favour C. face D. need

18.A. make B. offer C. take D. contribute

19.A. not more than B. other than C. no more than D. rather than

20.A. put out B. give out C. get over D. set up

After we meet people it is up to us to make them our friends. Let us stop a moment and consider what really makes a friend. The major qualities like faithfulness, devotion, friendly company, flash through our minds. But it is the large number of very small particular qualities that make up one’s whole character, such as cheerfulness, friendliness, and punctuality (守时). After all, “ to make a friend, be a friend” is not such a big and difficult order. There are particular favorable qualities, which attract others to us, and some elements which do have an effect on people in fundamental psychology(基础心理学) or not.

If you are in the presence of a shy person, talking and asking casual (随意的) questions may bring him out of his shell. Think of what would be most acceptable to the other person, for you to talk, or to listen. Either way the goal is to make yourself pleasant.

Always remember to listen, but listen intelligently. To have anyone “ hang on our words” is the most unnoticeably clever way in the world to please somebody. For a few extremely happy seconds we are the center of attraction, but when it is our turn to be audience, let us remember how we felt as the actor, and let’s be genuinely (真正地) interested in what the other fellow is saying.

Other people will like us, if we like them. If you want friends, keep your mind and heart open to friendship. Be alive to the other person’s world.

1.This passage is mainly about_______.

A. the ways of talking to a shy person

B. some favorable qualities to be a psychologist

C. how to make yourself attractive to your listeners

D. how to make a friend and be a friend

2.The words “ bring him out of his shell” in this passage most probably mean _______.

A. make him become active

B. make him feel more nervous

C. help him understand the question better

D. help him listen intelligently

3.According to the passage, an important way in making friends is to ________.

A. attract them B. be attracted

C. listen attentively D. talk widely

As we all know, millions of people worldwide cook their food over smoky fire every day. It is often difficult to find wood for the fire. People who do not have wood must spend large amounts of money on cooking fuel. However, there is a much easier way to cook food using energy from the sun.

Solar cooker, or ovens, have been used for centuries. A Swiss scientist made the first solar oven in seventeen sixty-seven. Today, people are using solar cookers in many countries around the world. People use solar ovens to cook food and to heat drinking water to kill bacteria and other harmful organisms.

There are three kinds of solar ovens. The first is a box cooker, It is designed with a special wall that shines or reflects sunlight into the box .Heat gets trapped under a piece of glass or plastic covering the top of the cooker. A box oven is effective for slow cooking of large amounts of food.

The second kind of solar oven is a panel cooker. It includes several flat walls or panels that directly reflect the sun’s light onto the food. The food is inside a separate container of plastic or glass that traps heat energy. People can build panel cookers quickly and with very few supplies. They do not cost much. In Kenya ,for example ,panel cookers are being manufactured for just two dollars.

The third kind of solar oven is a parabolic cooker. It has rounded walls that aim sunlight directly into the bottom of the oven .Food cooks quickly in parabolic ovens .However, these cookers are hard to make. They must be re-aimed often to follow the sun .Parabolic cookers can also cause burns and eye injuries if they are not used correctly.

You can make solar ovens from boxes or heavy paper. They will not catch fire. Paper burns at two hundred thirty-two degrees Celsius. A solar cooker never gets that hot. Solar ovens cook food at low temperatures over long periods of time. This permits people to leave food to cook while they do other things.

1.If you have much food to cook , you’d better choose________ .

A. a box cooker B. a panel cooker

C. a parabolic cooker D. a paper cooker

2.According to the passage we can conclude that ______.

A. panel cooker is easy to make

B. box cooker is easy to make

C. box cooker is the most effective oven

D. panel cooker is the cheapest oven of the three

3.What is the main purpose of the author in writing the passage?

A. To advertise the solar ovens.

B. To help readers to save cost on fuel.

C. To tell the readers how to make solar ovens.

D. To give the readers brief introduction of solar ovens.

A good way to practice your writing and be recognized by professionals and scholars is to enter writing contests. There are a variety of different writing contests open to teens who enjoy writing essays, fictional stories, poems and other written pieces.

Creative communication Essay Contest

The Creative Communication Essay Contest is sponsored by Creative Communication, an organization which promotes and encourages creative writing in students. The contest is open to students in grades four to 12. To enter, submit an original , non-fiction essay of 100 to 300 words on a topic of your choice. The contest is held three times a year with a fall deadline in October, a spring deadline in February and a summer deadline in July. Winners are chosen each time, one in each of the three divisions—grades 4-6, 7-9 and 10-12.

American Library of Student Poetry Contest

The American Library of Student Poetry Contest is open to students in grades three to 12. To enter, submit an original poem of 20 lines or less. Poems are judged on originality, creativity and artistic quality, and submissions are accepted throughout the year, with the winners being announced in September. First-,second- and third-place winners are chosen within each of the four grade categories, grades 3-5,6-7, 8-9, 10-12.

YCteen Essay Contest

The YCteen Essay Contest is hosted by YCteen, a life style magazine for teens. The contest is open to American teens , ages 14to19, and is held twice a year with the first deadline being in October and the second in December. To enter, submit an original, non-fiction essay of about 800 words answering a given essay question. Past questions have focused on issues such as climate change and activism. All winning entries will be published on the YCteen website and in the print version of the magazine.

Scholastic Art & Writing Awards

The Scholastic Art & Writing Awards is an art and creative writing contest hosted and sponsored by a group of more than 100 literary art organizations across the United States. The contest is open to teens in grades seven to 12 going to school in the United States and American schools abroad . Pieces can be submitted to any of 28 available categories, including humor, poetry, critical essays, journalism and more. Submissions are accepted starting in September, and the deadline ranges from December to January depending on your region.(地区)

1.In what way is the American Library of Student Poetry Contest different from the other writing contests?

A. Poems must be submitted in September.

B. It is for students from different grades.

C. There is no deadline for submissions.

D. Winners are chosen within each grade category.

2.The YCteen Essay Contest accepts essay______.

A. on a specific topic

B. with past questions

C. from a lifestyle magazine

D. on a topic of your choice

3.The Scholastic Art & Writing Awards is open to ______.

A. American students in all grades

B. foreign students in the United States

C. American schools at home and abroad

D. students in the literary art organizations

4.The main purpose of the passage is to ______.

A. tell teens how to enter writing contests

B. show the benefits of writing contests

C. offer tips on how to win writing contests

D. introduce writing contests for teens

短文改错

假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处语言错误，每句中最多有两处。错误仅涉及一个单词的增加、删除或修改。

增加：在缺词处加一个漏字符号(^ )，并在其下面写出该加的词。

删除：把多余的词用(＼)划掉。

修改：在错的词下画一横线，并在该词下面写出修改后的词。

注意：

1.每处错误及其修改均仅限一词；

2.只允许修改10处，多者（从第11处起）不计分。

I received your letter dated April 16 the day ago yesterday. Every of our family are greatly delighted to learn whether you are getting along very well with your lessons. Time passes quickly. In dozens of day, you'll finish middle school. What please us most is that you do very good to make up your mind to enter for the college entrance examination this summer. What wonderful it is! Dad, as well as Mom and I , are with you. We wish you to make better use your time .The fuller preparations if you make, the surer of success you'll certainly be.

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