They are just college graduates and don’t realize what ______ takes to start and run a company.
|
A．this |
B．he |
C．that |
D．it |
科目：高中英语 来源： 题型：阅读理解
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
查看答案和解析>>
科目：高中英语 来源：山东省临沂市2010届高三下学期第二次模拟考试试题（英语） 题型：阅读理解
Students at the Hogook Middle School in South Korea have a unique assignment：going online to message boards and write positive，cheerful comments．Teachers and other adults hope those comments will discourage others from leaving vicious(恶意的)and negative remarks．This is one of the activities in a nationwide program called the Sunfull Movement．
Online attacks are an increasing problem in South Korea，one of the world’s most connected nations．The National Police Agency receives tens of thousands of complaints every year．but there is not much that can be done to stop it，since attackers seldom use their real names．In the worst．cases，authorities say cyber—bullies(网络攻击have pressured some people to take their own lives．That is why the Sunfull Movement’s founder， Min Byoung'chul, a professor at Kunkuk University，began the program three years ago．
Min says research indicates ninny of the attackers are under the age of 30．“Young kids，they’re stressed out because of schoolwork．The．y have to prepare for their college entrance examinations and they just write whatever they feel．That’s one of the ways to blow off their discontent and stress．”explained Min．
Student Kim Hee-joo，15, says she writes thank—you messages to friends，family and teachers on her School’ s homepage．And when she sees people making bad comments about famous people，she leaves nice messages，because when people see positive comments they are more likely to stop saying bad things and change their attitude．
Teacher Kim Eun—young says Koreans do not really say “Thank you”or“J love you” to friends or parents. But being not face一to一face, they feel more comfortable saying those kinds of things．She also says violence at the school，both online and offline，has decreased and students and teachers get along much better now．
61．What’s the aim of the Sunfull Movement?
A．To teach students how to make comments on the Internet·
B．To serve as a model for other nations by gaining experience．
C．To offer students suggestions on letting off their discontent and stress·
D．To stop cyber—bullying and create a positive atmosphere on the Internet·
62．Online attackers are mostly young people because———————·
A．they hate the internet society B．they want to be famous
C．they are facing too much pressure D．they aye full of energy
63．Which of the following is true according to the text?
A．Network management in South Korea is bad．
B．Online attacks sometimes can make people kill themselves．
C．Police Agency’S work efficiency is low in South Korea．
D．Professor Min thinks cyber—bullies can be forgiven． ’
64．It can be inferred from the 1ast paragraph that——·
A．People in South Korea tends to express themselves frankly
B．Koreans、sometimes aye not polite to their friends or parents
C．Students and teachers don't get along well in Korean schools
D．Changes have taken place since the school began the program
65．The best title of this passage probably is _______________．
A．Battle Cyber—Bullying with Positive Comments
B．Keep Away from Negative Remarks Online
C．Students in South Korea Face Much Pressure
D．A Remarkable Concern in South Korea
查看答案和解析>>
科目：高中英语 来源：2014届山东省高二上学期期末模拟英语试卷（解析版） 题型：阅读理解
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
查看答案和解析>>
科目：高中英语 来源：广东省20092010学年高一下学期期末考试试题（英语） 题型：完型填空
II 语言知识及应用（共两节，满分35分）
第一节 完形填空（共10小题；每小题2分，满分20分）
阅读下面短文，掌握其大意，然后从21～30各题所给的A、B、C和D项中，选出最佳选项，并在答题卡上将该项涂黑。
Edinburgh is the capital city of Scotland (since 1437) as well as one of the biggest and most important cities in the country, the seventh biggest in the United Kingdom. The ___21___ of the city is around half a million. It lies in the southeast of ___22___. As the capital city it is also the seat of the Scottish Parliament (created in 1999). It is the second most ___23___ city in the United Kingdom after London, with 13 million visitors a year.
The ___24___ of Edinburgh is 100 square miles (259 square kilometers). The historical centre of the city is divided into two main parts, the Old Town and the New Town. They are ___25___ Princes Street Gardens. Both districts were ___26___ as a UNESCO World Heritage Site in 1995.
Edinburgh is quite famous for its annual Edinburgh Festival held four weeks from early August.
Edinburgh has been connected with many___27___people through its whole history. Famous authors of the city ___28___Sir Arthur Conan Doyle, the ___29___ of Sherlock Holmes, or nowadays J. K. Rowling, the author of Harry Potter. As far as the __30__ is concerned, the most famous people connected with Edinburgh are Charles Darwin (the biologist), Alexander Graham Bell (the telephone pioneer), and so on.
21. A. people B. number C. area D. population
22. A. England B. Britain C. Wales D. Scotland
23. A. travelled B. visited C. seen D. explored
24. A. land B. amount C. area D. boundary
25. A. separated by B. divided into C. divided by D. separated into
26. A. regarded B. thought C. listed D. treated
27. A. great B. historical C. famous D. intelligent
28. A. include B. contain C. have D. are
29. A. author B. discoverer C. director D. creator
30. A. science B. biology C. art D. literature
查看答案和解析>>
科目：高中英语 来源：2011年浙江省温州市高二下学期期末考试英语题 题型：阅读理解
We know the famous ones—the Thomas Edisons and the Alexander Graham Bells—but what about the less famous inventors? What about the people who invented the traffic light and the windshield wiper (雨刮器)？ Shouldn’t we know who they are?
Joan Mclean thinks so. In fact, McLean, a professor of physics at Mountain University in Range, feels so strongly about this matter that she’s developed a course on the topic. In addition to learning “who” invented “what”, however, McLean also likes her students to learn the answers to the “why” and “how” questions. According to McLean, “When students learn the answers to these questions, they are better prepared to recognize opportunities for inventing and more willing to give inventing a try.”
Her students agree. One young man with a patent（专利）for an unbreakable umbrella is walking proof of McLean’s statement. “If I had not heard the story of the windshield wiper’s invention,” said Tommy Lee, a senior physics major, “ I never would have dreamed of turning my bad experience during a rainstorm into something so useful.” Lee is now considering to sell his patent to an umbrella producer.
So, just what is the story behind the windshield wiper? Well, Mary Anderson came up with the idea in 1902 after a visit to New York City. The day was cold and stormy, but Anderson still wanted to see the sights, so she jumped aboard a streetcar. Noticing that the driver was struggling to see through the snow covering the windshield, she found herself wondering why there couldn’t be a built-in device(装置) for cleaning the window. Still wondering about this when she returned home to Birminghan, Alabama, Anderson started drafting out solutions. One of her ideas, a lever (操作杆) on the inside of a vehicle that would control an arm on the outside, became the first windshield wiper.
Today we benefit from countless inventions and innovations. It’s hard to imagine driving without Garrett A. Morgan’s traffic light. It’s equally impossible to picture a world without Katherine J. Blodgett’s innovation that makes glass invisible. Can you picture life without clear windows and eyeglasses?
1.
2.
3.
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com
