题目内容

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

练习册系列答案
相关题目

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.

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

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

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.

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网