Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with high energy density(密度)”,said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much lighter than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.
1.Which of the following is true of Jae Kwon?
A. He teaches chemistry at MU.
B. He developed a chemical battery.
C. He is working on a nuclear energy source.
D. He made a breakthrough in computer engineering.
2.Jae Kwon gave examples in Paragraph 4_________.
A. to show chemical batteries are widely applied.
B. to indicate nuclear batteries can be safely used.
C. to describe a nuclear-powered system.
D. to introduce various energy sources.
3.Liquid semiconductor is used to _________.
A. get rid of the radioactive waste B. test the power of nuclear batteries.
C. decrease the size of nuclear batteries D. reduce the damage to lattice structure.
高三英语阅读理解中等难度题
Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with high energy density(密度)”,said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanreal systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.
1.Which of the following is true of Jae Kwon?
A. He teaches chemistry at MU.
B. He developed a chemical battery.
C. He is working on a nuclear energy source.
D. He made a breakthrough in computer engineering.
2.Jae Kwon gave examples in Paragraph 4_________.
A. to show chemical batteries are widely applied.
B. to introduce nuclear batteries can be safely used.
C. to describe a nuclear-powered system.
D. to introduce various energy sources.
3.Liquid semiconductor is used to _________.
A. get rid of the radioactive waste
B. test the power of nuclear batteries.
C. decrease the size of nuclear batteries
D. reduce the damage to lattice structure.
4.According to Jae Kwon, his nuclear battery _______.
A. uses a solid semiconductor
B. will soon replace the present ones.
C. could be extremely thin
D. has passed the final test.
5.The text is most probably a ________.
A. science news report B. book review
C. newspaper ad D. science fiction story
高三英语阅读理解困难题查看答案及解析
Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with high energy density(密度)”,said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.
1.Which of the following is true of Jae Kwon?
A. He teaches chemistry at MU.
B. He developed a chemical battery.
C. He is working on a nuclear energy source.
D. He made a breakthrough in computer engineering.
2. Jae Kwon gave examples in Paragraph 4_________.
A. to show chemical batteries are widely applied.
B. to introduce nuclear batteries can be safely used.
C. to describe a nuclear-powered system.
D. to introduce various energy sources.
3.Liquid semiconductor is used to _________.
A. get rid of the radioactive waste
B. test the power of nuclear batteries.
C. decrease the size of nuclear batteries
D. reduce the damage to lattice structure.
4. According to Jae Kwon, his nuclear battery _______.
A. uses a solid semiconductor
B. will soon replace the present ones.
C. could be extremely thin
D. has passed the final test.
5.The text is most probably a ________.
A. science news report B. book review
C. newspaper ad D. science fiction story
PART FOUR WRITING (45%)
高三英语阅读理解简单题查看答案及解析
Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with high energy density(密度)”,said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much lighter than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.
1.Which of the following is true of Jae Kwon?
A. He teaches chemistry at MU.
B. He developed a chemical battery.
C. He is working on a nuclear energy source.
D. He made a breakthrough in computer engineering.
2.Jae Kwon gave examples in Paragraph 4_________.
A. to show chemical batteries are widely applied.
B. to indicate nuclear batteries can be safely used.
C. to describe a nuclear-powered system.
D. to introduce various energy sources.
3.Liquid semiconductor is used to _________.
A. get rid of the radioactive waste B. test the power of nuclear batteries.
C. decrease the size of nuclear batteries D. reduce the damage to lattice structure.
高三英语阅读理解中等难度题查看答案及解析
Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri (MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with energy density (密度),” said Jae kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope (放射性同位素) battery can provide power density that is much higher than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, recently the size and thickness of a penny, intended to power various micro/nano-electromechanical systems (M/NEWS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said. “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor (半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure (晶格结构) of the solid semiconductor, ” Kwon said. “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that the battery could be thinner than the thickness of human hair.
1.Which of the following is true of Jae Kwon?
A. He teaches chemistry at MU.
B. He developed a chemical battery.
C. He is working on a nuclear energy source.
D. He made a breakthrough in computer engineering.
2. Jae Kwon gave examples in Paragraph 4 ________.
A. to show chemical batteries are widely applied
B. to indicate nuclear batteries can be safely used
C. to describe a nuclear-powered system
D. to introduce various energy sources.
3. Liquid semiconductor is used to ________ .
A. get rid of the radioactive waste
B. test the power of nuclear batteries
C. decrease the size of nuclear batteries
D. reduce the damage to lattice structure
4. According to Jae Kwon, his nuclear battery ________.
A. uses a solid semiconductor B. will soon replace the present ones
C. could be extremely thin D. has passed the final test
5.The text is most probably a ________.
A. science news report B. book review
C. newspaper ad D. science fiction story
高三英语阅读理解简单题查看答案及解析
Batteries can power anything from small sensors to large systems. While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves. University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with high energy density(密度)”,said Jae Kwon, assistant professor of electrical and computer engineering at MU. “The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS). Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor(半导体). Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J. David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery. In the future, they hope to increase the battery’s power, shrink its size and try with various other materials. Kwon said that battery could be thinner than the thickness of human hair.
1. Which of the following is true of Jae Kwon?
A. He teaches chemistry at MU.
B. He developed a chemical battery.
C. He is working on a nuclear energy source.
D. He made a breakthrough in computer engineering.
2. Jae Kwon gave examples in Paragraph 4_________.
A. to show chemical batteries are widely applied.
B. to introduce nuclear batteries can be safely used.
C. to describe a nuclear-powered system.
D. to introduce various energy sources.
3. Liquid semiconductor is used to _________.
A. get rid of the radioactive waste
B. test the power of nuclear batteries.
C. decrease the size of nuclear batteries
D. reduce the damage to lattice structure.
4. According to Jae Kwon, his nuclear battery _______.
A. uses a solid semiconductor
B. will soon replace the present ones.
C. could be extremely thin
D. has passed the final test.
5. The text is most probably a ________.
A. science news report B. book review
C. newspaper ad D. science fiction story
高三英语阅读理解简单题查看答案及解析
Batteries can power anything from small sensors to large systems.While scientists are finding ways to make them smaller but even more powerful, problems can arise when these batteries are much larger and heavier than the devices themselves.University of Missouri(MU) researchers are developing a nuclear energy source that is smaller, lighter and more efficient.
“To provide enough power, we need certain methods with high energy density(密度)”,said Jae Kwon, assistant professor of electrical and computer engineering at MU.“The radioisotope(放射性同位素) battery can provide power density that is much higher than chemical batteries.”
Kwon and his research team have been working on building a small nuclear battery, presently the size and thickness of a penny, intended to power various micro / nanoelectromechanical systems (M/NEMS).Although nuclear batteries can cause concerns, Kwon said they are safe.
“People hear the word ‘nuclear’ and think of something very dangerous,” he said, “However, nuclear power sources have already been safely powering a variety of devices, such as pace-makers, space satellites and underwater systems.”
His new idea is not only in the battery’s size, but also in its semiconductor(半导体).Kwon’s battery uses a liquid semiconductor rather than a solid semiconductor.
“The key part of using a radioactive battery is that when you harvest the energy, part of the radiation energy can damage the lattice structure(晶体结构) of the solid semiconductor,” Kwon said, “By using a liquid semiconductor, we believe we can minimize that problem.”
Together with J.David Robertson, chemistry professor and associate director of the MU Research Reactor, Kwon is working to build and test the battery.In the future, they hope to increase the battery’s power, shrink its size and try with various other materials.Kwon said that battery could be thinner than the thickness of human hair
1.The text is most probably a ________.
A.science news report B.book review
C.newspaper ad D.science fiction
2.Liquid semiconductor is used to _________.
A.get rid of the radioactive waste
B.test the power of nuclear batteries
C.decrease the size of nuclear batteries
D.reduce the damage to lattice structure
3.According to Jae Kwon, his nuclear battery _______.
A.uses a solid semiconductor B.will soon replace the present ones
C.could be extremely thin D.has passed the final test
4.Jae Kwon gave examples in Paragraph 4_________.
A.to show chemical batteries are widely applied
B.to introduce nuclear batteries can be safely used
C.to describe a nuclear-powered system
D.to introduce various energy sources
高三英语阅读理解中等难度题查看答案及解析
Electronic sensors built into paper could be used in a range of ways from information storage to touch screens and more.
Electronic sensors built into cartons(纸盒)may make it easier to tell when it’s time to throw out rotten milk or orange juice. And that’s just the start. At least that’s the goal for researchers working on putting electronics into paper. They’re trying to figure out how to combine the flexibility, low-cost and recyclability of paper with the information-carrying ability of electronics.
Daniel Torbjork, a physics graduate student in Finland, has been working on the problem. He’s published a review of the field in the journal Advanced Materials.
Much research has been focused in this area. While most electronic applications require patterned conducting structures, conductive paper could be used in applications such as energy storage devices, sensors, electric heaters and others, according to Torbjork.
“You could even have some interactive functions in magazines,” Torbjork said, “You could put a simple game in a package. If you want a touch screen, press a button and then something happen. Sensors in paper could tell us when something has gone bad.”
Additional applications, such as information storage and security paper, have been suggested for magnetic papers containing magnetite. In Massachusetts, researchers have figured out how to post a video of such a device put into a paper airplane.
German researchers have also put electronic chips in paper bank notes to defend counter-feiters(造伪币者). Paper is a good material but printing electronics also requires low-cost manufacturing. As many US and European paper makers lose market share to cheaper paper from China, these big paper companies are looking for added value products. That’s where electronic paper devices could make a difference.
“The major obstacles are paper’s large surface roughness and chemical impurities.” Torbjork says. But others in the field think that electronic sensors in paper are still far from the consumer marketplace.
“I don’t think it’s going to happen.” said Roy Horgan. “You need a conductive surface. It could be 10 years out. What we are looking for are solutions that you can commercialize today.”
Solar Print is partnering with Italian automaker Fiat to develop a unique auto-glass with tiny photostatic cells(光电)that can capture electricity from the sun. In the meantime, using paper to conduct electricity is still a “blue-sky” project.
“I would love to see someone prove me wrong, because that means that it’s actually happening.” Horgan said. “If someone comes up with conductive paper, then that’s a very interesting technology.”
1.Putting electronics into paper will ________.
A. cut the cost and impurity of paper
B. depend on flexible conductive structure
C. help consume rotten milk or orange juice
D. combine the advantages of paper and electronics
2.Paragraphs 4 to 7 mainly talk about the ________ of the conductive paper.
A. practical use B. theories
C. structures D. design process
3.Some paper makers welcome the new technology probably because it will ________.
A. put an end to fake money B. make the paper smoother
C. add more value to paper D. improve the printing technology
4.From the passage, we know that Roy Horgan ________.
A. has a burning desire to make a great profit
B. showed much interest in Solar Print industry
C. is not confident about the conductive paper
D. started a “blue-sky” project to study paper
高三英语阅读理解中等难度题查看答案及解析
A team of scientists from University of Freiburg in Germany are developing a shoe with a sensor to automatically tie its laces(鞋带)that could be taken off when users click their heels together.
It’s been 26 years since we saw them magically tightening Marty McFly’s Nike boots in the film Back to The Future.
Now,self-tying shoelaces could actually become a reality this year,proving right one of the film’s fantastical predictions for what 2015 would be like.
Engineers have designed a shoe that can automatically lace up,adjusting itself to the shape of your foot.
Simply slip the controller on and pressure sensors will tell the ‘smart shoe’ when your foot is in position,triggering(触发)a tiny motor in the heel that pulls the laces tight.
When you want to take off the shoes,you click your heels together twice and the motor will release a spring(弹簧)in the shoe’s tongue,which loosens the laces enough for you to slip them off.
And the invention doesn’t even need to be plugged in to charge or have its battery replaced because it runs on power generated by the swing of your foot as you walk.
Engineer K1evis Ylli,of the Institute for Micromachining and Information Technology in southern Gemany,said the shoes could help a variety of different people.
“One focus is that it could be used in shoes for elderly people who have mobility problems,”he said.“But it could also work for children,or as a lifestyle product.”.
The design,which is still in a prototype(雏形)stage,cleverly gets the energy of the foot’s swing when opposing magnets in each shoe move past each other. It then uses that power to charge a battery.An hour of walking is enough to tighten the laces once,and it requires no energy to undo the shoes because that relies on the spring alone.
1.Which of the following can be the best title of the text?
A.A fantastical prediction
B.A great invention in Germany
C.A shoe with self-tying laces
D.A popular lifestyle product
2.What can we learn about the shoes?
A.They can automatically take off.
B.They can adjust themselves to your foot.
C.They need to be charged once.
D.They have been in design for 26 years.
3.From the last paragraph we can know ____________.
A.the shoes have been put into use
B.the shoes need power to take off
C.the shoes promise to be popular
D.how the shoes work to produce energy
高三英语阅读理解中等难度题查看答案及解析
A team of scientists from University of Freiburg in Germany are developing a shoe with a sensor to automatically tie its laces(鞋带)that could be taken off when users click their heels together.
It’s been 26 years since we saw them magically tightening Marty McFly’s Nike boots in the film Back to The Future.
Now,self-tying shoelaces could actually become a reality this year,proving right one of the film’s fantastical predictions for what 2015 would be like.
Engineers have designed a shoe that can automatically lace up,adjusting itself to the shape of your foot.
Simply slip the controller on and pressure sensors will tell the ‘smart shoe’ when your foot is in position,triggering(触发)a tiny motor in the heel that pulls the laces tight.
When you want to take off the shoes,you click your heels together twice and the motor will release a spring(弹簧)in the shoe’s tongue,which loosens the laces enough for you to slip them off.
And the invention doesn’t even need to be plugged in to charge or have its battery replaced because it runs on power generated by the swing of your foot as you walk.
Engineer K1evis Ylli,of the Institute for Micromachining and Information Technology in southern Gemany,said the shoes could help a variety of different people.
“One focus is that it could be used in shoes for elderly people who have mobility problems,”he said.“But it could also work for children,or as a lifestyle product.”.
The design,which is still in a prototype(雏形)stage,cleverly gets the energy of the foot’s swing when opposing magnets in each shoe move past each other. It then uses that power to charge a battery.An hour of walking is enough to tighten the laces once,and it requires no energy to undo the shoes because that relies on the spring alone.
1.Which of the following can be the best title of the text?
A.A fantastical prediction
B.A great invention in Germany
C.A shoe with self-tying laces
D.A popular lifestyle product
2.What can we learn about the shoes?
A.They can automatically take off.
B.They can adjust themselves to your foot.
C.They need to be charged once.
D.They have been in design for 26 years.
3.From the last paragraph we can know ____________.
A.the shoes have been put into use
B.the shoes need power to take off
C.the shoes promise to be popular
D.how the shoes work to produce energy
高三英语阅读理解中等难度题查看答案及解析
In the botanic garden we can find a(n)______of plants that range from tall trees to small flowers.
A.species | B.group | C.amount | D.variety |
高三英语单项填空简单题查看答案及解析