C
A light emitting diode (發(fā)光二極管), or L.E.D., is a device that shines when electricity passes through it.But it works differently than traditional kinds of light bulbs.Light emitting diodes use less energy and last much longer than bulbs with a filament (燈絲) inside.L.E. D.’s are also cooler to the touch, and shine a lot brighter than they used to.
Red L.E.D.’s have long been used as signal lights on electronic equipment.But now light emitting diodes also come in blue and other colors.Colored L.E.D.’s are used to show images on everything from wireless phones to huge video signs.And white L.E.D.’s are being used increasingly to replace traditional lighting systems.
But all these require electricity.In poor countries, people often burn fuel to produce light.But the smoke can make people sick.So an electrical engineering professor from Canada started a project to produce L.E. D.lighting systems for the developing world.These lights are powered by batteries that can be recharged with energy from the sun.The batteries can also be charged through other ways, such as wind power and water power.
Professor David Irvine-Halliday tells the story of how he got the idea.In 1997, while climbing in the Annapurna mountains in Nepal, he saw a small school.All the children were outside.He looked through a window and saw that inside the school was dark.The school had a sign that read: "We have no teachers.If you want to stay and teach for a few days, we would be very pleased." Professor Irvine-Halliday says that experience had a big effect on him.Back at the University of Calgary, he was on the Internet one day.He saw a company in Japan selling bright white L.E. D.’s.So he built a light with some.This is how he began the Light Up the World Foundation.
48.Compared with traditional kinds of light bulbs, L.E.D.’S________.
A.waste a lot of energy B.need shorter time to make
C.shine much brighter D.a(chǎn)re warmer to touch
49.According to the passage, we know that L.E.D.’s________.
A.will replace all the lights B.will be more and more popular
C.will be only colored ones D.will be only used in developing countries
50.According to the passage, we can infer that the purpose of the Light Up the World Foundation is to________.
A.develop L.E.D.lighting system for the developing world
B.sell bright white L.E.D.’s
C.collect money for developing countries
D.earn money by selling L.E.D.’s
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科目:高中英語(yǔ) 來(lái)源:陜西省寶雞中學(xué)2009-2010學(xué)年高二下學(xué)期期末考試試題(英語(yǔ)) 題型:閱讀理解
C
A light emitting diode (發(fā)光二極管), or L.E.D., is a device that shines when electricity passes through it.But it works differently than traditional kinds of light bulbs.Light emitting diodes use less energy and last much longer than bulbs with a filament (燈絲) inside.L.E. D.’s are also cooler to the touch, and shine a lot brighter than they used to.
Red L.E.D.’s have long been used as signal lights on electronic equipment.But now light emitting diodes also come in blue and other colors.Colored L.E.D.’s are used to show images on everything from wireless phones to huge video signs.And white L.E.D.’s are being used increasingly to replace traditional lighting systems.
But all these require electricity.In poor countries, people often burn fuel to produce light.But the smoke can make people sick.So an electrical engineering professor from Canada started a project to produce L.E. D.lighting systems for the developing world.These lights are powered by batteries that can be recharged with energy from the sun.The batteries can also be charged through other ways, such as wind power and water power.
Professor David Irvine-Halliday tells the story of how he got the idea.In 1997, while climbing in the Annapurna mountains in Nepal, he saw a small school.All the children were outside.He looked through a window and saw that inside the school was dark.The school had a sign that read: "We have no teachers.If you want to stay and teach for a few days, we would be very pleased." Professor Irvine-Halliday says that experience had a big effect on him.Back at the University of Calgary, he was on the Internet one day.He saw a company in Japan selling bright white L.E. D.’s.So he built a light with some.This is how he began the Light Up the World Foundation.
48.Compared with traditional kinds of light bulbs, L.E.D.’S________.
A.waste a lot of energy B.need shorter time to make
C.shine much brighter D.a(chǎn)re warmer to touch
49.According to the passage, we know that L.E.D.’s________.
A.will replace all the lights B.will be more and more popular
C.will be only colored ones D.will be only used in developing countries
50.According to the passage, we can infer that the purpose of the Light Up the World Foundation is to________.
A.develop L.E.D.lighting system for the developing world
B.sell bright white L.E.D.’s
C.collect money for developing countries
D.earn money by selling L.E.D.’s
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科目:高中英語(yǔ) 來(lái)源:陜西省20092010學(xué)年高二下學(xué)期期末考試試題(英語(yǔ)) 題型:閱讀理解
C
A light emitting diode (發(fā)光二極管), or L.E.D., is a device that shines when electricity passes through it.But it works differently than traditional kinds of light bulbs.Light emitting diodes use less energy and last much longer than bulbs with a filament (燈絲) inside.L.E. D.’s are also cooler to the touch, and shine a lot brighter than they used to.
Red L.E.D.’s have long been used as signal lights on electronic equipment.But now light emitting diodes also come in blue and other colors.Colored L.E.D.’s are used to show images on everything from wireless phones to huge video signs.And white L.E.D.’s are being used increasingly to replace traditional lighting systems.
But all these require electricity.In poor countries, people often burn fuel to produce light.But the smoke can make people sick.So an electrical engineering professor from Canada started a project to produce L.E. D.lighting systems for the developing world.These lights are powered by batteries that can be recharged with energy from the sun.The batteries can also be charged through other ways, such as wind power and water power.
Professor David Irvine-Halliday tells the story of how he got the idea.In 1997, while climbing in the Annapurna mountains in Nepal, he saw a small school.All the children were outside.He looked through a window and saw that inside the school was dark.The school had a sign that read: "We have no teachers.If you want to stay and teach for a few days, we would be very pleased." Professor Irvine-Halliday says that experience had a big effect on him.Back at the University of Calgary, he was on the Internet one day.He saw a company in Japan selling bright white L.E. D.’s.So he built a light with some.This is how he began the Light Up the World Foundation.
48.Compared with traditional kinds of light bulbs, L.E.D.’S________.
A.waste a lot of energy B.need shorter time to make
C.shine much brighter D.a(chǎn)re warmer to touch
49.According to the passage, we know that L.E.D.’s________.
A.will replace all the lights B.will be more and more popular
C.will be only colored ones D.will be only used in developing countries
50.According to the passage, we can infer that the purpose of the Light Up the World Foundation is to________.
A.develop L.E.D.lighting system for the developing world
B.sell bright white L.E.D.’s
C.collect money for developing countries
D.earn money by selling L.E.D.’s
查看答案和解析>>
科目:高中英語(yǔ) 來(lái)源: 題型:閱讀理解
One of the first things that Jim discovered while living with the Greens was that there were different television channels(頻道)in Britain, the BBC broadcasts on two channels: BBC1 and BBC2. There is a mixture of serious and light programmes on BBC1; there are mainly serious programmes on BBC2. ITV is an independent(獨(dú)立的)channel which carries advertisements(廣告). There are no advertisements on the BBC, so everyone must pay some money to the BBC each year. There are both serious and light programmes on ITV. Because of the different channels, it is not surprising that you often see each member in Mg. Green’s house wants to choose his or her own favorite channel. This is the sort of thing you hear:
“There’s sports programme on ITV.”
“What’s that, children?”
“We were wondering if we could watch the sports programme on ITV.”
“But I was wondering whether to watch the other programme on BBC1.” And so on. The children like ITV; mother prefers BBC1; father prefers BBC2. Jim hasn’t made up his mind.
66. We can conclude(推論)that Jim .
A. is a member of the Greens
B. had no idea whether to watch TV
C. was once a guest in the Greens
D. prefers ITV to the BBC
67. There are no advertisements on .
A. ITV B. BBC1 only C. BBC2 only D. BBC1, nor on BBC2
68. What programme did the children want to watch?
A. A sports programme. B. A serious programme.
C. A light programme. D. An advertisement.
69. Why do people have to pay some money each year?
A. Some of the TV channels are not free.
B. All of the TV channels are free
C. None of the TV channels are free.
D. People are not free to choose their favorite programmes.
70. How many persons are mentioned in the passage?
A. Three. B. Four. C. Five. D. At least five.
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科目:高中英語(yǔ) 來(lái)源: 題型:
---My new job is not as wonderful as I expected.
---Well, as the proverbs goes, “_________”
A. A year’s plan starts with spring. B. A good beginning is half done
C. A light heart lives long. D. The grass is always greener on the other side.
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