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 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 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.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.
4.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
科目：高中英语 来源：2016年全国普通高等学校招生统一考试英语（天津卷参考版） 题型：单项填空
We will put off the picnic in the park until next week, ____ the weather may be better.
A. that B. where C. which D. when
查看答案和解析>>
科目：高中英语 来源：2016年全国普通高等学校招生统一考试英语（北京卷参考版） 题型：单项填空
The most pleasant thing of the rainy season is _____ one can be entirely free from dust.
A. what B. that
C. whether D. why
查看答案和解析>>
科目：高中英语 来源：2016年全国普通高等学校招生统一考试英语（全国卷2参考版） 题型：阅读理解
阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项，并在答题卡上将该项涂黑。
A
What’s On?
Electric Underground
7.30pm－1.00am Free at the Cyclops Theatre
Do you know who’s playing in your area? We’re bringing you an evening of live rock and pop music from the best local bands. Are you interested in becoming a musician and getting a recording contract(合同)? If so, come early to the talk at 7.30pm by Jules Skye, a successful record producer. He’s going to talk about how you can find the right person to produce you music.
Gee Whizz
8.30pm-10.30pm Comedy at Kaleidoscope
Come and see Gee Whizz perform. He’s the funniest stand-up comedian on the comedy scene. This joyful show will please everyone, from the youngest to the oldest. Gee Whizz really knows how to make you laugh! Our bar is open from 7.00pm for drinks and snacks(快餐).
Simon’s Workshop
5.00pm-7.30pm Wednesdays at Victoria Stage
This is a good chance for anyone who wants to learn how to do comedy. The workshop looks at every kind of comedy, and practices many different ways of making people laugh. Simon is a comedian and actor who has 10 years’ experience of teaching comedy. His workshops are exciting and fun. An evening with Simon will give you the confidence to be funny.
Charlotte Stone
8.00pm-11.00pm Pizza World
Fine food with beautiful jazz music; this is a great evening out. Charlotte Stone will perform songs from her new best-selling CD, with James Pickering on the piano. The menu is Italian, with excellent meat and fresh fish, pizzas and pasta(面食). Book early to get a table. Our bar is open all day, and serves cocktails, coffee, beer, and white wine.
1.Who can help you if you want to have your music produced?
A. Jules Skye. B. Gee Whizz.
C. Charlotte Stone. D. James Pickering.
2.At which place can people of different ages enjoy a good laugh?
A. The Cyclops Theatre
B. Kaleidoscope
C. Victoria Stage
D. Pizza World
3.What do we know about Simon’s Workshop?
A. It requires membership status.
B. It lasts three hours each time.
C. It is run by a comedy club.
D. It is held every Wednesday.
4.When will Charlotte Stone perform her songs?
A. 5.00pm-7.30pm. B. 7.30pm－1.00am.
C. 8.00pm-11.00pm. D. 8.30pm-10.30pm.
查看答案和解析>>
科目：高中英语 来源：2016年全国普通高等学校招生统一考试英语（全国卷1参考版） 题型：阅读理解
阅读下列短文，从每题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。
C
I am peter Hodes ,a volunteer stem courier. Since March 2012, I've done 89 trips of those , 51 have been abroad, I have 42 hours to carry stem cells（干细胞）in my little box because I've got two ice packs and that's how long they last, in all, from the time the stem cells are harvested from a donor(捐献者) to the time they can be implanted in the patient, we’ve got 72 hours at most, So I am always conscious of time. 学科&网
I had one trip last year where I was caught by a hurricane in America. I picked up the stem cells in Providence, Rhode Island, and was meant to fly to Washington then back to London. But when I arrived at the check-in desk at Providence, the lady on the desk said:”Well, I’m really sorry, I’ve got some bad news for you-there are no fights from Washington.”So I took my box and put it on the desk and I said:”In this box are some stem cells that are urgently needed for a patient-please, please, you’ve got to get me back to the United Kingdom.”She just dropped everything. She arranged for a flight on a small plance to be held for me.re-routed(改道)me through Newark and got me back to the UK even earlier than originally scheduled.
For this courier job, you’re consciously aware than that box you’re got something that is potentially going to save somebody’s life.
1.Which of the following can replace the underlined word “courier” in Paragraph17
A. provider B. delivery man
C. collector D. medical doctor
2.Why does Peter have to complete his trip within 42hours?
A. He cannot stay away from his job too long.
B. The donor can only wait for that long.
C. The operation needs that very much.
D. The ice won't last any longer.
3.Which flight did the woman put Peter on first?
A. To London B. To Newark
C. To Providence D. To Washington
查看答案和解析>>
科目：高中英语 来源：2015-2016学年云南蒙自市高二4月考英语试卷（解析版） 题型：语法填空
阅读下面材料，在空白处填入适当的内容（不多于3个词）或括号内单词的正确形式。
When I lived in Spain, some Spanish friends of 1.______ ( I ) decided to visit England by car. Before they left, they asked me for advice about how to find accommodation. I suggested they 2._____ stay at “ bed and breakfast” houses, because this kind of accommodation gives a foreign visitor a good chance 3._____ (speak) English with the family. My friends accepted my advice, but they came back with some 4.____ (fun ) stories.
“ We did not stay at bed and breakfast houses,” they said, “ because we found that most families were away on holiday.” It was obviously impossible. Finally I understood what 5.____ (happen). My friends spoke little English, and they thought“VACANCIES” meant “holidays”, 6.____ the Spainish word for “holidays” is “vacancies”. So they did not go to the houses with the signs outside saying “ VACANCIES”, which in English means there are free rooms. Then my friends went 7.____ ( direct ) to the houses with the signs saying“NO VACANCIES ” , because they thought this meant the 8.____ ( own ) of the houses were not away on holiday. But in fact, all of these houses 9._____ (fill ) with travelers. As 10.____ result, they stayed at hotels!
查看答案和解析>>
科目：高中英语 来源：2015-2016学年内蒙古包头一中高一下期中考试英语试卷（解析版） 题型：阅读理解
I suppose that the most basic and powerful way to connect to another person is to listen. Just listen. Perhaps the most important thing we ever give each other is our attention. And especially if it’s given from the heart. When people are talking, there’s no need to do anything but receive them. Listen to what they’re saying. Care about it. Most times caring about it is even more important than understanding it. Most of us don’t value ourselves or our love enough to know this. It has taken me a long time to believe in the power of simple saying “I’m so sorry,” when someone is in pain.
One of my patients told me that when she tried to tell her story people often interrupted to tell her that they once had something just like that happening to them. Her pain became a story about themselves. Eventually she stopped talking to most people. We connect through listening. When we interrupt what someone is saying to let them know that we understand，we move the focus of attention to ourselves. When we listen, they know we care.
I have even learned to respond to someone crying by just listening. In the old days I used to reach for the handkerchiefs, until I realized that passing a person a handkerchief may be just another way to shut him down，to take them out of their experience of sadness. Now I just listen. When they have cried all they need to cry, they find me there with them.
This simple thing has not been that easy to learn. It certainly went against everything I had been taught since I was very young. I thought people listened only because they were too shy to speak or did not know the answer. But now I know that a loving silence often has far more power to heal than the kindest words.
1.What does the author value most in the communication with each other?
A. Deep understanding. B. Saying “I’m sorry”．
C. Attention from heart. D. Doing nothing.
2.The woman patient stopped telling her story to most people because________.
A. she didn’t get enough respect from others
B. she was discouraged by being often interrupted
C. people often told her their own opinions
D. people couldn’t understand her sad situation
3.If you hand a handkerchief to someone crying，you may________.
A. hurt his feelings
B. make him embarrassed
C. encourage him to continue to cry
D. stop him from letting out his sorrow
4.It can be inferred from the passage that while communicating，________.
A. listening is a perfect way to respond to others
B. people keep silent because they don’t know the answer
C. keeping silent means being too shy to speak
D. it is easy to form the habit of listening silently
查看答案和解析>>
科目：高中英语 来源：2015-2016学年黑龙江齐齐哈尔市高一下期中考试英语试卷（解析版） 题型：七选五
根据短文内容，从短文后选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Some people go through life positively. 1. Luckily, you can learn to become positive. If you become more positive, things will become brighter day by day. It’s not because things are any better, but because how you look at them will change. Here are a few things positive people do differently.
They find something to look forward to every day. Whether it’s catching up on a favorite TV show, trying out a new dessert recipe, or having a phone conversation with a friend in another town, these things don’t have to be big. 2. .
3. Joy isn’t so hard to find. You can even find joy in the tiniest things — a funny text from a friend or a beautiful sunny day — because it adds up. Soon, you won’t have to stop and smell the roses because you’ll be smelling them all the time. So learn to enjoy the small things in your life.
They stay busy. Being busy doesn’t mean living under much stress. 4. It means having something to look forward to every day. Start a hobby. Fill your weekends with your hobby. Remember, living your life to the fullest is up to you.
5. When in doubt, choose kindness. Positive people look on the bright side, sure, but they also tend to pay it forward by passing on their positive energy to others. Giving is generous, but it also makes the giver feel even better. Now that’s a win-win. Be kind to others and others will treat you in the same way. And your days will be much better.
A. It means filling your life with good activities.
B. They celebrate small things.
C. They are kind.
D. They do something for fun.
E. Kindness is most important.
F. Having activities to expect will make you happy every day.
G. But not all of us were born to be positive.
查看答案和解析>>
科目：高中英语 来源：2015-2016学年吉林松原油田高中高二下期中考试英语试卷（解析版） 题型：书面表达
随着网络的普及，越来越多的学生依赖网络做作业。请你依据以下内容写一篇英语短文。
1. 借助网络做作业的优点：省时；查询答案方便等；
2. 依赖网络做作业的缺点：导致懒惰；养成不良学习习惯等；
3. 你的建议。
注意：1. 可以适当增加细节，以使行文连贯；
2. 词数100 左右；
3. 开头已为你写好，但不计入总词数。
Nowadays, more and more students do their schoolwork with the help of the Internet.
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
_______________________________________________________________________________
___________________________________________________________
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com
