A kind of new houses in California is selling quite fast. In a short time, people buy 82 ones and they need 1000 more. And the factories will build them soon—for they are able to build one in less than 24 hours.
Why can they do it so fast? Because 3D printing (打印) helps to make it. 3D printing not only builds a house with less time, but also costs less and is more environmentally (环境上) friendly. And there are different styles of 3D printed houses for people to choose.
3D printing is developing (发展) very fast. But there are some problems with 3D printed houses. First, the house “printed” out may not be strong enough. Second, while building houses layer by layer (逐层地), there may be some differences between layers. Some layers may be a little thinner or thicker than others. Finally, there are now fewer types of 3D printing materials (材料) for us to use.
However, the future of 3D printed houses is promising. In India, there are not enough houses. The country wants to use 3D printing to solve the problem. If successful, buildings by 3D printing may go popular. We can also use it to build offices and other buildings. NASA wants to use 3D printing to build something on Mars and the Moon.
1. How does the writer begin the passage?| A．By giving his advice. | B．By showing a fact. |
| C．By telling his story. | D．By asking a question. |
| A．It needs less time to build the houses. | B．It costs too much to build the houses. |
| C．The style of 3D printed houses is the same. | D．3D printed houses are bad for the environment. |
| A．two | B．three | C．four | D．five |
| A．充满失望的 | B．令人担心的 | C．令人惊喜的 | D．充满希望的 |
| A．Features of 3D Printed Houses | B．Uses of 3D Printed Houses |
| C．Introduction of 3D Printed Houses | D．Future of 3D Printed Houses |
相似题推荐
| EMIGLIO OUR WALKING TALKING ROBOT | |
| ●Emiglio is your new friend! He is white. He can go forward (向前), turn and talk. By using the remote control (遥控器), you can move the robot! | |
 | Small parts! NOT for children under 3. |
 | ●Safety rules： ➢Do not leave Emiglio outside the house at night. ➢Do not use Emiglio in dangerous places like roads or hills. ➢Keep Emiglio away from the fire and sand. Always turn off Emiglio when you are done playing. ➢Take out the batteries (电池) if you are not going to use him for a long time. |
 | |
1. What can we know about Emiglio?
| A．He is for small children. | B．He is white and black. |
| C．He can sing. | D．He can turn. |
| A．On the hill. | B．On the road. | C．In the house. | D．Near the beach |
| A．speak into the microphone | B．take out the batteries | C．just turn him off | D．touch his head |
| A．hear some sounds | B．make Emiglio go forward |
| C．make Emiglio go backward | D．see the lights from Emiglio’s feet |
| A．① | B．③ | C．④ | D．⑤ |
【推荐2】What will our homes be like in the future? Here are some predictions:
★Do you want to take a shower when you get home? You’ll be able to let your smart water heater (热水器) to start heating up when you’re on your way home.
★Did I turn off the oven? Did I close the window? Everyone may have a moment like that. But in the future, your home will check these for you.
★In your home of the future, all of your devices (设备) can work together to make your life more comfortable. When you turn on the lights in the morning, your windows will open at the same time. The lights will slowly turn off by themselves after the sun appears.
★Your home may have dangers. The hackers (黑客) could open your door and cause a mess (造成麻烦) at your home through your phone or other devices. Your home will tell you about it but you can’t arrive in time. So people will have to be careful of their personal information.
1. Our life will be like ________ in the future in smart homes.| A．more comfortable | B．very busy | C．very safe | D．more boring |
| A．Your friend | B．Your home | C．The police | D．Your neighbor |
| A．There might be dangers about smart homes in the future. | B．The lights will turn off by themselves when the sun comes out. |
| C．The hackers might only come into your home through the phone. | D．You don't need to worry if you forget to close windows in the future. |
| A．a TV show | B．a story | C．a song | D．a magazine |
【推荐3】Jim wants to borrow a book from a new library. He comes to the library with Jack. They can’t see any assistants, but there are some robots standing there. Then Jim says to the robot “Hey, give me the book.” But the robot doesn’t work.
“What’s wrong with this robot?”he asks Jack. Then Jack tells him. “When you want to borrow something from somebody, you must say ‘please’ first.”
So Jim says, “Will you please give the book to me, Mr. Robot?” Then the robot brings him the book. But again, Jim can’t take the book out of the robot’s hand.
Jack says, “You must say ‘Thank you!’ before you take the book.” So Jim says. “Oh, thank you very much. Mr. Robot.”
1. Jim goes to the library with ________.| A．a robot | B．Jack | C．his mother | D．his father |
| A．policemen | B．students | C．robots | D．women |
| A．Jim doesn’t say “please” | B．Jim doesn’t tell Jack about it |
| C．the robot doesn’t know Jim | D．the robot doesn’t know Jack |
| A．brings him the book | B．doesn’t bring him the book |
| C．brings him a chair | D．doesn’t work |
| A．Jim says “Good morning” | B．Jim says “please.” |
| C．Jim says “thank you.” | D．Jim says nothing |
【推荐1】All through the winter, the Esquimaux(爱斯基摩人) live in houses made of snow. These small houses are very clean and white when they are new. They can soon turn dirty, but pieces of fresh snow make them new again. Sometimes the Esquimaux build their small houses with the wood that they find along the seaside.
However, they aren’t always so lucky. When they can’t get wood, they use the snow. It is so cold that the snow becomes very hard, so the small houses are strong enough in the whole winter. The windows of these houses are not made of glass, but of ice.
When the warm weather comes, the houses become water slowly. The Esquimaux get wet as they lie in bed, and often catch a cold. They are glad to get away from the small snow houses and live in their tents during the summer.
1. The Esquimaux live in houses made of _______ all through the winter.| A．glass | B．snow | C．paper | D．grass |
| A．clean and white | B．dirty and white | C．small and dirty | D．big and clean |
| A．in the river | B．in the snow | C．along the seaside | D．in the mountains |
| A．the snow houses are dirty | B．it is summer |
| C．they get some wood | D．it is spring |
【推荐2】Everyone surfing the web has billions of choices on what they can be viewing. And always we can find many different kinds of ads. Some of them are futile, but some of them are helpful. Here are some ads from the Internet. Maybe they can help you.
House For Sale
Century Garden, Jiading, Shanghai
2storey house, 509 m2 total land area428.8 building, 312.2㎡ garden ¥15. 8 million
If you are interested in the house, please contact the Housing Center.
13861973547 Fax:021-89609728
Job Wanted
Stella, 24, a shining girl, is good at oral English and Putonghua. Now she is an office lady in a trade company in Shanghai. She is kindhearted, hard- working and healthy. She would like a part time weekend job offering Putonghua lessons to foreign friends.
Stella_6868@126.com 13032788622
Damingshan Mountain Ski Park
Address: Linan,Zhejiang
Price:55 yuan (admission ticket)
Ski: 50 yuan/hour on weekdays and 70 yuan/hour on weekends.
120 yuan/four hours on weekdays and 190 yuan/ four hours on weekends.
0211-85191617 2238005
1. We can find the advertisements above__________.
| A．in a magazine | B．in a shop | C．on the Internet | D．on TV |
| A．useful | B．useless | C．Precious | D．colorful |
| A．509m2 | B．428.8m2 | C．12.2m2 | D．80.2m2 |
| A．call13861973547. | B．fax021-89609728. |
| C．email to Stella6868@126.com | D．chat with 22380055 on QQ |
| A．a Housing Center | B．a language school | C．a Ski Park | D．a trade company |
| A．105 yuan | B．125 yuan | C．175 yuan | D．245 yuan |
【推荐3】Room For Rent
Note: Newly renovated (翻新), Living room, Kitchen & Wash room.
Close to public & Catholic school, 10 minutes’ walk. 20 minutes’ walk to a bank.
Half an hour’s walk to a hospital and a supermarket.
Available from: August 20, 2018
Please call: 416–848–5634
1. From the advertisement, we learn that ________.| A．the room is well furnished | B．you can rent the room to others |
| C．you can keep a pet in the room | D．you can’t cook in the room |
| A．a school | B．a bank | C．a hospital | D．a supermarket |
| A．July 20, 2018 | B．July 30, 2018 | C．August 19, 2018 | D．August 20, 2018 |
【推荐1】Hi! My name is Frank. My classroom is big. There is a table for the teacher and 13 desks for the students. Two students share (共用) one desk. A blackboard is on the wall. Some pictures are on the other walls. Two maps are here, too. Four computers are in my classroom.
Look! A box is in the classroom. It’s under the teacher’s table. Here are some lost things. If we find lost things, we will put them here. Our teacher, Ms. Moor marks (做标记) them with some colors. Red is for the books, blue is for the pens and pencils, and yellow is for the balls. If some students lose things, they can ask Ms. Moor for help. Her phone number is 580-6983.
Every day we clean our classroom and it’s very tidy. I love my classroom.
1. There are probably (可能) ________ students in Frank’s class.| A．12 | B．13 | C．26 | D．28 |
| A．blue | B．red | C．yellow | D．white |
| A．Two maps are on the blackboard. |
| B．A blackboard and some pictures are on the same wall. |
| C．The box is at the back of (在……的后面) the classroom. |
| D．Students can ask Ms. Moor for their lost things. |
| A．a lost and found box |
| B．Frank’s classroom |
| C．Frank’s picture |
| D．Frank’s teacher |
Are you new here? Here are some places maybe you need know.
 | Sunny Sky Restaurant is the most popular in town and has the most delicious food. And it plays the most wonderful music. You can have the best service. However, the food there is more expensive. |
 | Many people like shopping in Walmart because they can buy all kinds of things there the most cheaply. But there is one bad thing. The only reason why I dislike it is that the workers there are the most boring. They will ask you to buy things you don’t need at all. |
 | Renmin Park is the best place to go to on weekends. It’s the biggest and the most beautiful park here. Walking in it, you can enjoy the freshest air and learn some culture of the town. The best thing is that it is free for visitors. However, sometimes it’s kind of crowded because of too many people. |
 | Many people like Wanda Cinema. It has the biggest screens and the most comfortable seats. But the tickets are more expensive than those in any other cinema and sometimes the workers there aren’t friendly at all. |
1. What can you enjoy in the Sunny Sky Restaurant? ________
| A．The cheapest food. | B．The most exciting show. | C．The most comfortable seats. | D．The most wonderful music. |
| A．Interesting. | B．Kind. | C．Unfriendly. | D．Helpful. |
| A．Because of the workers. | B．Because it is far. | C．Because the things in it are expensive. | D．Because it is not tidy. |
| A．Renmin Park. | B．Walmart. | C．Wanda Cinema. | D．Sunny Sky Restaurant. |
| A．News. | B．Life. | C．Sports. | D．Family. |
【推荐3】Hello, everyone. Today I would like to introduce a kind of very cute bird: they live in a cold place, wear a black and white coat, are a little fat and heavy, not tall. Who are they? Penguins. Now I’ll tell you something about them.
Penguins usually live in the Antarctic, a world of ice and snow. To survive, penguins have thick skin and a lot of fat to keep themselves warm. But what about their bare feet?Penguins need their bare feet to grip the ice in order to be able to walk on it without falling down. Also, their feet can help them to swim well in water.
As we can see, having bare feet is necessary for penguins. But how do these birds keep their feet from freezing?
Penguins have come up with three solutions to this problem. First, to prevent their feer from getting too cold, penguins may bend their bodies. In this way, the feathers on their bellies (腹部) can cover their feet. Second, they can stand on their heels (脚趾) and use their tails to keep balance so that their feet can be lifted off the ice. Third, penguins have special heat exchangers in their bodies. These exchangers control the amount of blood flowing down to their feet so that they can be kept at the right temperature.
But remember: though penguins’ feet don’t freeze, they are often very cold. If their feet were always kept warm, they would be wasting lots of energy to do so. That is why penguins keep the temperature of their feet just a few degrees above zero.
1. Why can penguins keep themselves warm in cold weather?| A．Because they have bare feet. |
| B．Because they have thick skin and a lot of fat. |
| C．Because they can swim fast under the water. |
| D．Because they can swim together to keep warm. |
| A．Tails. | B．Heels. | C．Exchangers. | D．Feathers. |
| A．Pick. | B．Hide. | C．Catch. | D．Break. |
| A．The Antarctic is a cool and wet place. |
| B．Penguins always keep their feet warm. |
| C．Penguins may bend their bodies to prevent falling down. |
| D．The temperature of penguins’ feet is controlled by the exchangers. |
