题目内容
____ David showed the report to the public surprised me．
A．What B．That C．Which D．Who
B
(10·山东D篇)
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.
71. 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.
72. 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.
73. 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.
74. 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.
75. The text is most probably a ________.
A. science news report B. book review
C. newspaper ad D. science fiction story
D The most detailed breakdown(分析) of ethnic and gender performance in national curriculum tests for 7, 11 and 14－year－olds shows that Chinese pupils do best in every subject at every age. Chinese and Indian pupils outperformed white British children in English tests for 11－year－olds. In all, 83% of Chinese students reached the required standard compared with 78% of Indian pupils and 75% of white UK pupils and only 65% of Bangladeshi children reaching level four, the standard that an 11－year－old should achieve. While the overall results show the performance of every ethnic group at GCSE(中等教育普通证书) is improving, they do highlight a worrying trend for white British pupils. David Miliband, the minister for School Standards, said the results showed that while standards in secondary schools were rising, there was “a shocking gender gap between boys and girls”. He added: “58.2% of girls achieved five A to C grade passes at GCSE in 2003 compared with just 49.9% of boys, and white working－class boys are one of the lowest performing groups at 14.” According to researchers,” In the weeks leading up to GCSE unsupervised study leave at home in many areas has become the norm(惯例). They are left to their own devices.” Mr. Miliband is supporting a plan to persuade schools to drop study leave before GCSEs and replace it with structured revision in school.53．What's the best title for this text? A．Chinese－British Pupils' Education in Britain B．British Primary Education C．British Ethnic Minority Education D．The GCSE In Britain54．All UK 11－year－olds' required standard in English tests is that they should reach .A．grade A B．grade B C．grade C D．level 455．What worries David Miliband according to the text? A．Chinese－British and Indian－British pupils surpass British pupils in every subject. B．White working class boys perform worst in schools. C．Girls perform much better than boys. D．Before GCSE all students are asked to do revision at school by themselves.56．According to David Miliband, the study leave before GCSE is . A．unacceptable B．practical C．admirable D．Understandable
The announcements by the NASA，in the form of several Web site postings and a video posted on YouTube，were in response to worries that the world will end on Dec．21，2012．
The doomsday(末日) rumour reached a high point with the release of the new movie “2012”，directed by Roland Emmerich．In the movie，Yellowstone blows up, showering the continent with black ash．Tidal waves wash over the Himalayas，where the governments of the planet have secretly built a ship which a select 400，000 people can ride out the storm．There are hundreds of hooks devoted to 2012，and millions of Web sites，depending on what combination of“2012”and“doomsday”you type into Google．All of it，astronomers say, is nonsense．“Most of what's claimed for 2012 relies on wishful thinking and ignorance of astronomy．”Ed Krupp， an expert on ancient astronomy，wrote in an article in the November issue of Sky＆Telescope．
“I get angry at the way people are being influenced and frightened to make money,” Morrison said．“There is no right to frighten children to make a buck．”suggested David Morrison，an astronomer at the NASA Ames Research Center in Moffett Field，Calif．He said he had been getting about 20 letters and e—mail messages a day from people as far away as India scared out of their wits．Morrison said he did not blame the movie for all this，as much as many other supporters of the Mayan prediction．But then，he said，“my doctorate is in astronomy，not psychology．”
In an e—mail exchange, Krupp said：“We are always uncertain about the future，and we always consume representations of it．We are always attracted by the romance of the ancient past．”A NASA spokesman，Dwayne Brown，said the agency did not comment on movies，leaving that to movie critics．But when it comes to science, Brown said, “we felt it was careful to provide a resource．”
If you want to worry，most scientists say，you should think about global climate change or nuclear war．But if ancient prophecies(预言)get you going，here are some things Morrison and the others think you should know．
64．Which of the following statements is TRUE according to the passage?
A．Dr．Morrison blamed the Movie“2011”for the panic it aroused in the public around the world．
B．People who watched the movie were seared and firmly believed that the end of the world was coming．
C．In terms of science it was better to provide evidence and theory at the same time．
D．Dr．Morrison thought it was not right to make money by frightening people．
65．It can be inferred from the text that ．
A．astronomers think that doomsday is likely to happen in the near future
B．the reason why the NASA posted web site postings was to make people interested in astronomy
C．scientists think we shouldn't worry about doomsday but show concern about environment protection
D．most astronomers agree that the world is not ending—at least anytime soon
66．Which of the following would be the best title?
A．A New Movie“2012” B．Is Doomsday Coming?
C．End-of-the-World Stories D．Astronomers Comment on Movies
67．What would the author probably discuss in the paragraph that follows?
A．Evidence that the Mayans thought something special would happen in 2012．
B．What will really happen in 2012．
C．The reason why there is no need to worry about doomsday．
D．Ancient stories about the end of the world．
New technology that can “ see ” through clothing and detect what ’ s underneath can now be used to scan crowds, making it a potentially effective tool to prevent terrorist attacks in public places.
The Thru Vision T5000 camera picks up Terahertz rays ，or T-rays, which are naturally sent out by all objects and can pass through clothes or even walls. The camera can then detect metallic and nonmetallic objects hidden under clothing on still or moving subjects without showing any body detail.
While similar technology is seen at airports around the world, the T5000 is designed to be used in large, open areas. With a range of 25 meters, the T5000 can screen people in public places, thus avoiding bottle-necks at border crossing or security checkpoints. It also means people can be screened without knowing it.
The technology develops from British astronomers ’ work in studying dying stars. Astronomers use T-ray cameras to see through dust and clouds in space. The company sees uses for its camera at other sites where political or business activities take place.
For privacy concerns，Thru Vision Chief Executive Clive Beattie said the image produced by the camera did not show detailed parts of the body. ” It's almost a shining light bulb(灯泡）.“ Beattie said. "You don' t see the detail that people might be concerned about. “ In London' s busy Piccadilly Circus—which is already filled with closed -circuit surveillance (监视）cameras— reaction to the new technology was mixed. Some said the camera was going too far and violating privacy，but others said they are willing to put safety before privacy concerns. “ There ’ s surveillance everywhere anyway, “ said one commuter. “I don' t think it’ s much of a difference. I don' t care that they can see through me because they can see me anyway.“
Some experts said the privacy violation of the camera was not worth the benefit. “ What we should consider is how much we want to lose our privacy in order to obtain a sort of national security，” said David Murakami Wood，director of the Surveillance Studies network，which deals with surveillance and privacy problems. “ In most cases this isn' t real security—it ’ s a sense of safety that has very little real effect. ”
1..
What can we learn about T5000?
A. It can detect metallic and nonmetallic objects underneath.
B. It can see through clothing or walls by sending out T-rays.
C. It was first used to observe stars by astronomers.
D. It is widely used at airports around the world.
2..
What is the most probable purpose of the new invention?
A. To improve people ’ s life standard. B. For scientific research.
C. For commercial benefits. D. For safety reasons.
3..
Which is most probably the opinion of people on using the new camera?
A. Some agree to its use as it is new technology to protect privacy.
B. Some agree to its use because safety is the most important.
C. Some don' t agree to its use because it makes no difference.
D.Some people don' t care because they know little about it.
4..
What' s the main idea of the last paragraph?
A. Safety is more important than privacy.
B. T5000 is more beneficial than harmful.
C. T5000 does not really provide security.
D. It's not worth giving up privacy for safety.
