题目内容
A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech integrated systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.
“It’s extremely important for us to think about this as a whole system and not just the sum of a bunch of individual components (元件),” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. A few years ago, his team got the go-ahead to start piecing together the components. “The added difficulty with a project like this is that actually none of those components are off the shelf and so we have to develop them all on our own,” he said.
They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of interdependencies on the individual components, each of which individually has to perform well, but then has to be matched well to everything it’s connected to,” said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.
While this first robotic flyer is linked to a small, off-board power source, the goal is eventually to equip it with a built-in power source, so that it might someday perform data-gathering work at rescue sites, in farmers’ fields or on the battlefield. “Basically it should be able to take off, land and fly around,” he said.
Wood says the design offers a new way to study flight mechanics and control at insect-scale. Yet, the power, sensing and computation technologies on board could have much broader applications. “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis.”
41. The robotic fly project has been conducted __________.
A. just by accident B. within a decade
C. just by a professor D. for more than ten years
42. The difficulty the team of engineers met with while making the robotic fly was that __________.
A. they had no model in their mind
B. they did not have sufficient time
C. they had no ready-made components
D. they could not assemble the components
43. It can be inferred from paragraphs 3 and 4 that the robotic fly __________.
A. consists of a flight device and a control system
B. can just fly in limited areas at the present time
C. can collect information from many sources
D. has been put into wide application
44. Which of the following can be learned from the passage?
A. The robotic flyer is designed to learn about insects.
B. Animals are not allowed in biological experiments.
C. There used to be few ways to study how insects fly.
D. Wood’s design can replace animals in some experiments.
45. Which of the following might be the best title of the passage?
A. Father of Robotic Fly
B. Inspiration from Engineering Science
C. Robotic Fly Imitates Real Life Insect
D. Harvard Breaks Through in Insect Study
DCBDC
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中的两项为多途选项。根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中的两项为多途选项。
In many parts of the world, cars play an important role in daily life and many societies would not exist without them. 【小题1】 But this is the prediction made by a team of transport researchers who are taken seriously, not only by government but also by car manufacturers.
The Human Science and Advanced Technology Institute at Loughborough in the UK is part of an international research program. 【小题2】 That will mean much saving, no accidents and better use of roads. The super-intelligent car in the future will drive itself. 【小题3】 Instead, we will have a choice of cars and change them as frequently as we change our clothing.
According to Dr. David Davis, who leads the research team, these predictions are based on the rising cost of the car culture, which had blocked up our cities, polluted our air, and caused more deaths than both world wars put together.
Davis says, cars will be fitted with some intelligent devices(装置) to regulate(调节) the distance between one car and another. 【小题4】 computers are much safer drivers than people, so cars in a road train will be able to drive much closer together than cars driven by people.
By 2010, Dr. David Davis believes, car technology will give motorists a clear view of the road, whatever the weather conditions, by projecting an image of the road ahead on to the car’s windscreen. 【小题5】 Cars will be connected by an electronic tow bar to the car in front to form “road-trains”. “The front vehicle in such a train burns the normal amount.”says Davis. “but all the others in the train would burn about ten percent of the normal amount, and so produce about ten percent of the pollution.”
| A．The team there believes that by 2030 all cars will be computerized. |
| B．They believe that cars will become more important in 20 years. |
| C．And it will not be owned by one individual. |
| D．And by 2030, cars will travel in line, linked to each other electronically. |
F.Every driver will use less fuel in the car he owns.
G.The car will automatically speed up, or slow down, to match the speed of the car in front.
In many parts of the world，cars play an important role in daily life and many societies would not exist without them. So the idea that in 20 years’ time, no one will own cars may be hard to believe. But this is the prediction made by a team of transport researchers who are taken seriously, not only by government but also by car manufacturers.
The Human Science and Advanced Technology Institute at Loughborough in the UK is part of an international research program. The team there believes that by 2020 all cars will be computerized, which will mean much saving，no accidents and better use of roads. The super-intelligent car of the 21st century will drive itself, and it will not be owned by one individual. Instead, we will have a choice of cars and change them as frequently as we change our clothing.
According to Dr. David Davis，who leads the research team, these predictions are based on the rising cost of the car culture, which had blocked up our cities, polluted our air, and caused more deaths than both world wars put together.
Davis says cars will be fitted with some intelligent devices to regulate the distance between one car and another. The car will automatically speed up, or slow down, to match the speed of the car in front. Computers are much safer drivers than people, so cars in a road train will be able to drive much closer together than cars driven by people. By 2010, Dr. David Davis believes, car technology will give motorists a clear view of the road, whatever the weather conditions, by projecting an image of the road ahead on to the car’s windscreen. And by 2020, cars will travel in convoy linked to each other electronically. Cars will be connected by an electronic tow bar to the car in front to form “road-trains”. “The front vehicle in such a train burns the normal amount.” says Davis. “But all the others in the train would bum about ten percent 0f the normal amount, and so produce about ten percent of the pollution.”
1. We know from the passage that governments and car manufacturers .
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A. do not believe the prediction that no one will own cars by 2020 |
|
B. are devoted to the technological revolution in car industry |
|
C. consider the predictions seriously |
|
D. have put the super-intelligent car into mass production |
2. Which of the following will be the characteristic of the cars of 2020?
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A. The car will speed up out of control． |
|
B. We will own as many cars as we want． |
|
C. All cars will be driven by computers． |
|
D. Cars will produce more pollution than present ones． |
3.The leader of the research team believes that the present car culture will change because .
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A. cars play a very important role in daily life |
|
B. many societies would stop functioning without cars |
|
C. cars should not be owned by one individual |
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D. it causes many deaths to human society |
4.The expression closest in meaning to the phrase “in convoy” in the last paragraph is .
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A. in line B. sidelong |
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C. side by side D. shoulder to shoulder |
5. What will happen if cars are joined to each other electronically in 2020？
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A. Motorists will get a clear view of the road． |
|
B. The weather condition will not have effect on motorists． |
|
C. There will be less pollution caused by car． |
|
D. All trains will burn less fuel than present． |