Scientists claim to have developed a revolutionary new giant 3D concrete printer that can build a 2,500-square-foot house in just 24 hours.
The 3D printer, developed by Professor Behrokh Khoshnevis from the University of Southern California, could be used to build a whole house, layer by layer, in a single day.
"It is basically scaling up 3D printing to the scale of building," said Khoshnevis.
The giant robot replaces construction workers with a nozzle (喷嘴), which can quickly build a home based on a computer pattern, MSN News reported.
Contour Crafting, as it is named, is a layered fabrication (构造) technology. Using this process, a single house or a colony of houses, each with possibly a different design, may be constructed in a single run, embedded (嵌入) in each house all the wires and pipes for electrical, plumbing and air-conditioning.
The potential applications of this technology are far-reaching including in emergency, low-income, and commercial housing.
"Our research also addresses the application of Contour Crafting in building habitats on other planets. Contour Crafting will most probably be one of the very few feasible approaches for building structures on other planets, such as the Moon and Mars, which are being targeted for human habitation before the end of the new century," researchers said on the project website.
The technology may potentially reduce energy use and emissions. And the main advantages of the Contour Crafting process over existing technologies are the superior surface finish that is realized and the greatly increased speed of construction.
1.Professor Khoshnevis has recently developed a 3D printer that can ________.
A. build a 2500-square-foot house in a single day
B. construct a skyscraper, layer by layer
C. design a group of houses automatically
D. assist construction workers in their work
2.The new 3D printer uses the following to build a house EXCEPT ________.
A. a nozzle B. a computer pattern C. a robot D. an air-conditioner
3.According to the text, the potential applications of Contour Crafting include building _______.
A. emergency vehicles B. low-income housing
C. commercial centers D. space stations on other planets
4.What advantages of this new technology is mentioned in the text?
A. It creates more jobs. B. It is less time-consuming.
C. It saves the building cost. D. It emits no carbon dioxide.
高二英语阅读理解中等难度题
Scientists claim to have developed a revolutionary new giant 3D concrete printer that can build a 2,500-square-foot house in just 24 hours.
The 3D printer, developed by Professor Behrokh Khoshnevis from the University of Southern California, could be used to build a whole house, layer by layer, in a single day.
"It is basically scaling up 3D printing to the scale of building," said Khoshnevis.
The giant robot replaces construction workers with a nozzle (喷嘴), which can quickly build a home based on a computer pattern, MSN News reported.
Contour Crafting, as it is named, is a layered fabrication (构造) technology. Using this process, a single house or a colony of houses, each with possibly a different design, may be constructed in a single run, embedded (嵌入) in each house all the wires and pipes for electrical, plumbing and air-conditioning.
The potential applications of this technology are far-reaching including in emergency, low-income, and commercial housing.
"Our research also addresses the application of Contour Crafting in building habitats on other planets. Contour Crafting will most probably be one of the very few feasible approaches for building structures on other planets, such as the Moon and Mars, which are being targeted for human habitation before the end of the new century," researchers said on the project website.
The technology may potentially reduce energy use and emissions. And the main advantages of the Contour Crafting process over existing technologies are the superior surface finish that is realized and the greatly increased speed of construction.
1.Professor Khoshnevis has recently developed a 3D printer that can ________.
A. build a 2500-square-foot house in a single day
B. construct a skyscraper, layer by layer
C. design a group of houses automatically
D. assist construction workers in their work
2.The new 3D printer uses the following to build a house EXCEPT ________.
A. a nozzle B. a computer pattern C. a robot D. an air-conditioner
3.According to the text, the potential applications of Contour Crafting include building _______.
A. emergency vehicles B. low-income housing
C. commercial centers D. space stations on other planets
4.What advantages of this new technology is mentioned in the text?
A. It creates more jobs. B. It is less time-consuming.
C. It saves the building cost. D. It emits no carbon dioxide.
高二英语阅读理解中等难度题查看答案及解析
Scientists at the University of Oxford have developed new artificial intelligence software to recognize the faces of chimpanzees in the wild. The new software will allow researchers to significantly cut back on time and resources spent analyzing video footage.
“For species like chimpanzees, which have complex social lives and live for many years, recording their behavior from short-term field research can only tell us so much.” says Dan Schofield, researcher and DPhil student at Oxford University’s Primate Models Lab. “By using the power of machine learning to unlock large video footage, it makes it feasible to measure behavior over the long term. Observing how the social lives of a group change over several generations become possible as well.”
The computer model was trained using over 10 million images from Kyoto University’s Primate Research Institute (PRI) video footage of wild chimpanzees in West Africa. The new software is the first to recognize individuals in a wide range of poses, performing with high accuracy in difficult conditions such as low lighting, poor image quality and movement blur (模糊).
“Access to this large video footage has allowed us to use cutting edge deep neural networks to train models at a scale that was previously not possible.” says Arsha Nagrani, co-author of the study and DPhil student in University of Oxford. “Additionally, our method differs from previous primate face recognition software in that it can be applied to raw video footage with limited manual intervention (人工干预) or pre-processing, saving hours of time and resources.”
The technology has potential for many uses, such as monitoring species for protection. Although the current application focused on chimpanzees, the software provided could be applied to other species, and help drive the adoption of artificial intelligence systems to solve a range of problems in the wildlife sciences.
“All our software is available open-source for the research community.” says Nagrani. “We hope that this will help researchers across other parts of the world apply the same cutting-edge techniques to their unique animal data sets. As a computer vision researcher, it is extremely satisfying to see these methods applied to solve real, challenging biodiversity (生物多样性) problems.”
“With an increasing biodiversity crisis and many of the world’s ecosystems under threat, the ability to closely monitor different species and populations using systems will be important for protection efforts, as well as animal behavior research.” adds Schofield. “Interdisciplinary cooperation like this have huge potential to make an impact, by finding solutions for old problems, and asking biological questions which were previously not available on a large scale.”
1.What’s the function of the new artificial intelligence software?
A.Analyzing video footage in difficult conditions.
B.Recognizing the faces of chimpanzees in the wild.
C.Cutting edge deep neural networks to train models at a scale.
D.Saving hours of time and resources without manual intervention.
2.What does the underlined word “feasible” in Paragraph 2 probably mean?
A.possible B.important
C.natural D.official
3.From the passage, we know that the artificial intelligence software could ________.
A.recognize individuals but not clearly
B.save time and resources only
C.help to protect different species
D.hardly solve biodiversity problems
4.What is the main purpose of the passage?
A.To introduce a new software.
B.To explain a measure.
C.To assess a project.
D.To describe a procedure.
高二英语阅读理解中等难度题查看答案及解析
“Global warming could make humans shorter,” warn scientists who claim to have found evidence that it caused the world's first horses to shrink(收缩) nearly 50 million years ago. In fact, a team from the universities of Florida and Nebraska says it has found a link between the Earth heating up and the size of mammals – horses, in this case.
The scientists used fossils to follow the evolution of horses from their earliest appearance 56 million years ago. As temperature went up,their size went down, and vice versa(反之亦然);“ At one point they were as small as a house cat,” said Dr Jonathan Bloch, curator(博物馆长) of the Florida Museum of Natural History, which was quoted by the "Daily Mail" as saying.
The scientists say that the current warming could have the same effect on mammals and could even make humans smaller."Horses started out small, about the size of a small dog . What's surprising is that after they first appeared, they then became even smaller and then dramatically increased in size, and that exactly corresponds to the global warming event, followed by cooling”
"It had been known that mammals were small during that time and that it was warm, but we hadn't realized that temperature specifically was driving the evolution of body size," Dr Bloch said in the "Science" journal.
1.How did scientists find out the horses’ earliest appearance millions of years ago?
A. searching the data on the net
B. sorting through the pictures of ancient times
C. using fossils to follow the evolution
D. analyzing the related images
2.What can we infer form the passage?
A. As temperatures went up, horses dramatically increased in size
B. The temperature has no effect on mammals’ evolution
C. As temperatures went up, horses’ size went down
D. In history, it used to be warm at early times , followed by a certain period of sharply cooling down.
3.Which is the most closest meaning to the underlined words most probably mean _______.
A. react to B. be contradictory to
C. be consistent with D. differ from
4.What is the best title of the passage?
A. Global warming is to disappear
B. The temperature on earth is to decrease
C. Global warming makes human shorter
D. Mammals are dying out.
高二英语阅读理解中等难度题查看答案及解析
Scientists have to work hard to keep ________ with modern discoveries and developments.
A. company B. track C. pace D. touch
高二英语单项填空简单题查看答案及解析
The Chinese scientists claimed _______ a cure for the disease.
A. having discovered B. discovering
C. to have discovered D. that they discover
高二英语单项填空困难题查看答案及解析
They are said to have developed a new ______ to teaching, which is said to improve classroom teaching greatly.
A.method | B.means | C.way | D.approach |
高二英语单项填空中等难度题查看答案及解析
They are said to have developed a new ______ to teaching ,_______ is bound to improve classroom teaching greatly.
A.approach; which B. approach; that
C. means; which D. means; that
高二英语单项填空中等难度题查看答案及解析
____ new cure for this disease that medical experts have recently developed proves to be ______ most effective, although it can not completely kill all the viruses.
A. A; a B. The; / C. /; the D. A; the
高二英语单项填空中等难度题查看答案及解析
_____ new cure for this disease that medical experts have recently developed proves to be ______ most effective, although it can not completely kill all the viruses.
A. A; a B. The; / C. /; the D. A; the
高二英语单项填空中等难度题查看答案及解析
_____ new cure for this disease that medical experts have recently developed proves to be ______ most effective, although it can not completely kill all the viruses.
A. A; a B. The; / C. /; the D. A; the
高二英语单项填空中等难度题查看答案及解析