Radioactive matter is dangerous to work with because it has a bad effect ____the blood.
A. to B. for C. in D. on
科目:高中英語 來源:2014屆陜西省高二上學期期末考試英語試卷(解析版) 題型:單項填空
At the meeting they discussed three different _______ to the study of radioactive waste.
A.means B.methods C.a(chǎn)pproaches D.ways
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科目:高中英語 來源:陜西省20092010學年高一下學期期末考試試題(英語)語音知識 題型:閱讀理解
Marie Sklodowska was the daughter of a Polish teacher. She was a very intelligent little girl; she could read when she was only four years old. Her father taught science at a school in Warsaw. Marie went to his school when she was fourteen years old. She was very interested in science and mathematics, and liked to help his father in his laboratory. She was a very good student and left school with a gold medal.
Marie wanted to be a scientist like her father. In 1891 her sister Bronya invited her to go to Paris. There she began to learn science and mathematics at the famous university of the Sorbonne. At first Marie could speak only a little French, but he worked hard and soon passed her examination. In Paris Marie met another scientist Pierre Curie, and in 1895 she married him.
In 1898 both the Curies decided to investigate the radioactive elements in pitchblende. The Austrians gave them a lot of pitchblende for their work, and the Curies began to experiment with it slowly and carefully. They worked hard for four years, and at last Marie obtained a very small piece of radioactive element—radium. It weighed only one tenth of a gramme, but it was pure radium and it shone with a wonderful light. The new element was valuable to science, but it was beautiful too.
46. Which of the following statements is true?
A. Marie left a gold medal because she was a good student.
B. Marie left school because she was a good student.
C. Marie received a gold medal because she was a good student
D. Marie left school because she wasn’t a good student.
47. Marie’s father ______ in Warsaw.
A. was an English teacher B. learned science at a school
C. was a science teacher D. taught Polish at a school
48. In 1891 Marie could ______.
A. speak only a little Polish
B. not speak French at all
C. speak only a little science
D. speak only a little French
49. In Paris Marie met ______.
A. another science B. another scientist
C. another scientific work D. scientific labs
50. The radium ______ one tenth of a gramme.
A. shone B. experimented C. obtained D. weighed
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科目:高中英語 來源:2011河南開封高中高三模擬考試英語試題 題型:信息匹配
根據(jù)短文內容,從短文后的選項中選出能填入空白處的最佳選項。選項中有兩處為多余選項。
1 First, the radioactive material must travel from its place of production to the power station. Although the power stations themselves are strongly built', the .containers used for the transport of the materials are not. 2 Unfortunately, both' of these may have an effect on the general public, since they are sure to pass near, or even through heavily populated areas.
Second, there is the problem of waste. 3 It is impossible to make these wastes non—radioactive, and so they must be stored in one of the inconvenient ways .that scientists have invented.For example? they may be buried under the ground, or dropped into deserted mines, or sunk in the sea.However, these methods do not 'solve the problem, since an earthquake could easily break the containers.
Third, there may occur the danger of a leak or an explosion at the power station.As with the other two dangers, this is not very likely to take place. 4 However, it can happen.
Separately, these three types of dangers are not a great cause for worry. 5
A.It is unusual for radioactive materials to be transported across land.
B.There are three separate sources of danger in supplying energy by nuclear power.
C.All nuclear power stations produce wastes that in most cases will remain radioactive for thousands of years.
D.The general public are strongly against the nuclear program.
E.So it does not provide a serious objection to the nuclear program.
F.Normally, only two methods of transport are in use, namely road or rail.
G.But when they are taken together, the probability of disaster is extremely high.
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科目:高中英語 來源:2010-2011學年廣東省中山市高三上學期第二次模擬考試英語卷 題型:閱讀理解
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 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 (半導體). 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 (晶格結構) 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
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科目:高中英語 來源:2010年普通高等學校招生全國統(tǒng)一考試(湖南卷)模擬卷2 題型:其他題
PART FOUR WRITING
SECTION A
Directions: Read the following passage. Complete the diagram by using the information from the passage.
Write NO MORE THAN 3 WORDS for each answer.
Supplying energy by nuclear power is a new trend in the recent years. However, it may be very dangerous.
First, the radioactive material must travel from its place of production to the power station. Although the power stations themselves are strongly built, the containers used for the transport of the materials are not. Normally, only two methods of transport are in use, namely, road and rail. Unfortunately, both of these may have an effect on the general public, since they are sure to pass near, or even through, heavily populated areas.
Second, there is a problem of waste. All nuclear power stations produce wastes that in most cases will remain radioactive for thousands of years. It is impossible to make these waste non radioactive, so they must be stored in one of the inconvenient ways that scientists have invented. For example, they may be buried under the ground, or dropped into deserted mines, or sunk in the area. However, these methods do not solve the problem, since an earthquake could easily break the containers.
Third, there may occur the danger of a leak or an explosion at the power station. As with the other two dangers, this is not very likely, so it doesn’t provide a serious objection to nuclear program. However, it can happen.
Separately, these three types of dangers are not a great cause for worry. Taken together, though, the probability of disaster is extremely high.
Title: 71 of Nuclear Power
Argument |
Supplying 72 by nuclear power may be very dangerous. |
||
Grounds of 73 |
Places |
Reasons |
74 |
Along 75 |
77 not strong |
Transported near the public |
|
In waste-storing areas |
78 |
Breaking containers |
|
76 |
Not mentioned |
A leak or explosion |
|
Conclusion |
Separately, not a great 79 for worry; 80 , very possible |
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