题目内容
【题目】A new “smart bin” could mean the end of environment-conscious families spending hours sorting tins, cartons, bottles, and cardboard for recycling.
The invention, which can help sort rubbish into recycling categories without needing people to operate. It is being trialed in Poland and is set to go on sale in UK within a few years.
The bin, designed by start-up company Bin.E, recognizes different type of waste via a system positioned inside the bin which uses sensors, image recognition and artificial intelligence. Once waste is placed inside, the camera and sensor identify its type and place it in one of the smaller bins. Then it compresses the waste so it occupies less space.
It is thought that the bin could be stocked by department stores such as John Lewis, which said it is introducing more new hi-tech recycling bins. Matt Thomas, a buyer at John Lewis, gave us the reason, “We’ve recently seen a jump in specialist bins sales, with a 25 percent increase in the last few months alone. We have noticed our customers are becoming more and more focused on sustainability. In response to this demand, we are really excited to introduce a smart bin this autumn/winter season-designed to make recycling more efficient and functional for the everyday home."
Bin.E's official release on the market will take place in 2018. However, at first only a larger version designed for offices will be available.The office bin will sell at 430 while customers will need to pay a 107 subscription fee for an accompanying smartphone app, which hooks them up with collection services. A spokesman at Bin.E said that home version of the bin will be cheaper and will not include a monthly payment.
They added: “After the office version, we plan to create an outdoor version and later the home version. We decided to go for the outdoor version for public areas first because it is more difficult to organize an efficient waste segregating system than in our homes.”
【1】What do we know about about a new “smart bin” from the first paragraph?
A. It works automatically.
B. It has been used widely.
C. It is easy to operate.
D. It is very expensive.
【2】What does the underlined word “it” in Paragraph 2 refer to?
A. The waste.
B. The camera.
C. The bin.
D. The sensor.
【3】Why is John Lewis introducing more new hi-tech recycling bins?
A. To change people’s behaviour,
B. To satisfy increasing demands.
C. To popularize new technology.
D. To make them more famous.
【4】Where will the first version of new “smart bin” be used according to Bin. E’s official?
A. At home.
B. In the supermarket.
C. In the open air.
D. In the office.
【答案】
【1】A
【2】C
【3】B
【4】D
【解析】本文介绍了一款可以智能分类垃圾的“智能垃圾箱”。并对它的设计,市场应用进行了介绍。
【1】A细节理解题。根据第一段A new “smart bin” could mean the end of environment-conscious families spending hours sorting tins, cartons, bottles, and cardboard for recycling.一个新的“智能垃圾箱”花几个小时来整理罐头、纸盒、瓶子和纸板,以便于回收利用。可知smart bin是自动的,智能的,故选A。
【2】C词义猜测题。根据前边The invention, which can help sort rubbish into recycling categories without needing people to operate这项发明可以帮助垃圾分类,可知it指代the smart bin,故选C。
【3】B推理判断题。根据文章Matt Thomas, a buyer at John Lewis, gave us the reason, “We’ve recently seen a jump in specialist bins sales, with a 25 percent increase in the last few months alone. We have noticed our customers are becoming more and more focused on sustainability. In response to this demand, we are really excited to introduce a smart bin this autumn/winter season-designed to make recycling more efficient and functional for the everyday home."可知客户越来越关注于可持续性,为了应对这一需求,会推出一个智能垃圾桶,故选B。
【4】D细节理解题。根据文章However, at first only a larger version designed for offices will be available.最初只有一个为办公室设计的更大胆版本才可以使用。可知最初是在办公室使用,故选D。
【题目】We see the world in three dimensions. Now, we can print in three dimensions, too, thanks to a manufacturing process: 3D printing.
3D printing or additive manufacturing is a process of making three dimensional solid objects from a digital file.
The creation of a 3D printed object is achieved using additive processes. In an additive process an object is created by laying down successive (连续的) layers of material until the object is created. Each of these layers can be seen as a thinly sliced horizon till (水平的) cross-section of the eventual object. Today’s 3D printers are being used to print everything from design models to jewelry, crafts, product parts, body parts, and even food.
3D printing starts with making a virtual design of the object you want to create. This virtual design is for instance a CAD (Computer Aided Design) file. This CAD file is created using a 3D modeling application or with a 3D scanner (to copy an existing object). A 3D scanner can make a 3D digital copy of an object.
You will have to prepare a 3D model before it is ready to be 3D printed. This is what they call slicing. Slicing is dividing a 3D model into hundreds or thousands of horizontal layers and needs to be done with software.
Sometimes a 3D model can be sliced from within a 3D modeling software application. It is also possible that you are forced to use a certain slicing tool for a certain 3D printer.
When the 3D model is sliced, you are ready to feed it to your 3D printer. This can be done via USB. SD or WiFi. It really depends on what brand and type 3D printer you have.
When a file is uploaded in a 3D printer, the object is ready to be 3D printed layer by layer. The 3D printer reads every slice (2D image) and creates a three dimensional object.
Before you pick up a 3D printer and experimenting in the 3D world, consider how big the objects you might want to create. If your goal is to print foot-long rulers, you’ll fall short of that goal if the printer you choose can only handle objects smaller 6 inches in height and width.
Another reality check is print speed. You’ll be able to knock out a day’s worth of chores (琐事) while the printer is running, with a typical 4-inch model requiring as many as 12 hours to print. As with ordinary printers, print speed also depends on how well it prints.
Title: A Beginners’ Guide to 3D Printing
What is 3D printing? | 3D printing is a process of making three-dimension objects out of a digital file. An object created with 3D printing 【1】 of a number of layers of material. |
How does 3D printing 【2】? | The first 【3】is to make a virtual design of your 【4】 object. A 【5】 3D model is sliced into a huge number of layers with software or some 【6】 for a certain 3D printer. The sliced model is 【7】 to a 3D printer The 3D printer 【8】 the layers into an entire object step by step. |
What else do you need to know? | The【9】of what you intend to make is a factor in your choice of a 3D printer. Print speed is associated with print 【10】. |