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 (MNEMS). 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 developed a chemical battery.
B. He teaches chemistry at MU.
C. He made a breakthrough in computer engineering.
D. He is working on a nuclear energy source.
2.Liquid semiconductor is used to ________.
A. reduce the damage to lattice structure
B. test the power of nuclear batteries
C. decrease the size of nuclear batteries
D. get rid of the radioactive waste
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.The text is most probably a ________.
A. book review
B. science news report
C. newspaper ad
D. science fiction story
高二英语阅读理解困难题
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/nanoelectromechanical systems (MNEMS). 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 developed a chemical battery.
B. He teaches chemistry at MU.
C. He made a breakthrough in computer engineering.
D. He is working on a nuclear energy source.
2.Liquid semiconductor is used to ________.
A. reduce the damage to lattice structure
B. test the power of nuclear batteries
C. decrease the size of nuclear batteries
D. get rid of the radioactive waste
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.The text is most probably a ________.
A. book review
B. science news report
C. newspaper ad
D. science fiction story
高二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 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 is working on a nuclear energy source.
C. He developed a chemical battery.
D. He made a breakthrough in computer engineering.
2.Jae Kwon gave examples in Paragraph 4_________.
A. to introduce nuclear batteries can be safely used
B. to show chemical batteries are widely applied
C. to introduce various energy sources
D. to describe a nuclear-powered system
3.Liquid semiconductor is used to _________.
A. get rid of the radioactive waste
B. test the power of nuclear batteries.
C. reduce the damage to lattice structure.
D. decrease the size of nuclear batteries
高二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 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 |
高二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/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
高二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 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.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.
2.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.
3.The text is most probably a ________.
A.science news report B.book review
C.newspaper ad D.science fiction
高二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 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.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.
2.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.
3.The text is most probably a ________.
A.science news report B.book review
C.newspaper ad D.science fiction
高二英语阅读理解中等难度题查看答案及解析
One day, Raul was miles away from the small ranch (牧场)house in a large valley. Everything seemed to be all right, yet he felt strange and somewhat uneasy. The wind had picked up, and angry, dark clouds 31 across the sky. He could smell the rain coming. And it did. 32 , the lightning flashed through the clouds, nearly 33 Raul. The thunder (雷声) was so loud that he buried his head in his hands and rubbed his eyes. Then he heard it — hoof beats (蹄声). He 34. There before him stood a tall, white horse. An old man stared down at him from its back.
“Wh-wh-who are y-y-you?” asked Raul. “Oh, my name is Gray Cloud,” the old man answered 35 , “come with me.”
Raul followed on with his horse. A 36 feeling came over him. All 37 them the rain was pouring down, 38 not a drop fell on them. They seemed to be 39 back toward Raul’s home. Raul lost track of time. Then all at once, he found 40 at the ranch gate. The old man turned his horse, waved his hand, and smiled. Lightning flashed again. The old man and his horse were 41 .
Raul’s father ran out across the yard to 42 him. “We have been 43 about you. Are you okay? Hurry. Let’s get in out of the 44 .”
“Wait,” said Raul. “Have you ever heard of an old man called Gray Cloud?”
“Can’t say I … wait. I believe my great-grandfather used to tell stories about a man called Gray Cloud. He died a long time ago. They all say he was 45 by lightning during a terrible thunderstorm. Why do you ask?” At this, Raul was really more shocked than puzzled.
1. A.dropped B.fell C.rolled D.covered
2. A.Suddenly B.Strongly C.Quickly D.Hardly
3. A.beating B.blinding C.burning D.touching
4. A.looked up B.woke up C.lay down D.sat down
5. A.lazily B.angrily C.freely D.slowly
6. A.natural B.common C.strange D.sad
7. A.around B.beside C.through D.above
8. A.yet B.for C.so D.or
9. A.reaching B.leading C.heading D.returning
10. A.them B.themselves C.him D.himself
11. A.gone B.left C.followed D.lost
12. A.see B.meet C.beat D.ask
13. A.waited B.thought C.worried D.excited
14. A.yard B.wind C.grass D.rain
15. A.defeated B.caught C.damaged D.struck
高二英语完型填空中等难度题查看答案及解析
Many people prefer large cars, _____large cars are safer than small ones.
A. thinking B. to think C. think D. having thought
高二英语单项填空中等难度题查看答案及解析
Judging from a large amount of evidence presented, we can safely _________ the Three Gorges Project will change the lives of a great number of humans forever.
A.challenge | B.reject | C.conclude | D.suspect |
高二英语单项填空简单题查看答案及解析
One choice for me is to study in a university in a large city rather than _______ in a small town. And another choice for me is _______ of studying abroad.
A. one; one B. one; that C. that; one D. that; that
高二英语单项填空中等难度题查看答案及解析