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The temperature of the sun is over 5000 degrees Fahrenheit at the surface, but it rises to perhaps more than 16 million degrees at the center.The sun is so much hotter than die earth that matter can exist only as a gas, except at the core.In the core of the sun, the pressures are so great against the gases that, despite the high temperature, there may be a small solid core.However, no one really knows, since the center of the sun can never be directly observed.
Solar astronomers do know that the sun is divided into five layers or zones.Starting at the outside and going down into the sun, the zones are the corona, chromosphere, photosphere, convection zone and finally the core.The first three zones are regarded as the sun's atmosphere.
But since the sun has no solid surface, it is hard to tell where the atmosphere ends and the main
body of the sun begins.
The sun's outermost layer begins about 10000 miles above the visible surface and goes outward for mllions of miles.This is the only part of the sun that can be seen during an eclipse(日食) such as the one in February 1979.At any other time, the corona can be seen only when special instruments are used on cameras and telescopes to shut out the glare of the sun's rays.
The corona is a brilliant, pearly white, filmy light, about as bright as the full moon.Its beautiful rays are a sensational sight during an eclipse.The corona's rays flash out in a brilliant fan that has wispy spikelike(一束束穗狀) rays near the sun's north and south poles.The corona is thickest at the sun's equator.
The corona rays are made up of gases streaming outward at tremendous speeds sad reaching a temperature of more than 2 million degrees Fahrenheit.The rays of gas thin out as they reach the space around the planets.By the time the sun's corona rays reach the Earth, they are weak and invisible.
小題1:Matter on the aim can exist only in fee form of gas because of the sun's ___.
A.sizeB.ageC.locationD.temperature
小題2:All of the following are parts of the sun's atmosphere EXCEPT the ___.
A.coronaB.chromosphereC.photosphere D.core
小題3:According to the passage, as the corona ra5,'s reach -die plaasts, they become ___.
A.hotterB.clearer C.thinnerD.stronger
小題4:Which of 'die following do the paragraphs following the passage most likely discuss?
A.The remaining layers of the sun.
B.The evolution of the sun to its present form.
C.The eclipse of February 1979.
D.All the above.

小題1:D
小題2:D
小題3:C
小題4:A
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科目:高中英語 來源:不詳 題型:閱讀理解

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科目:高中英語 來源:不詳 題型:閱讀理解

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小題1: Which of the following is NOT TRUE according to the author’s description of the disaster in 2094?
The whole mankind becomes extinct.
All the coastal cities in African are destroyed.
The whole world becomes extremely cold.
The visit of the comet results in wars.
小題2:Why does the author mention dinosaurs at the end of the passage?
A.Because they could only live in the warm climate.
B.Because they once dominated the Earth.
C.Because dinosaurs and humans never live in the same age.
D.Because their extinction indicates future disasters
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A.give an accurate description of the possible disaster in the future
B.warn of a possible disaster in the future
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科目:高中英語 來源:不詳 題型:閱讀理解

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A.since 1980B.since last winter
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A.do a lot of good to human beings in many ways
B.protect humans from diseases caused by bad weather
C.do a lot of harm to human beings in the summer-time
D.protect humans from harmful levels of ultraviolet radiation
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B.above Antarctica during the winter in the mid-1980s
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D.over the USA in the summertime in the mid-1980s
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科目:高中英語 來源:不詳 題型:閱讀理解

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小題1:Why did the writer give two different stories in this passage?
A.To help prove his opinion about raising a child.
B.To list different ways that parents may take.
C.To criticize some parents’ foolish action.
D.To prove that his way of education is right.
小題2:What does the underlined word “postponed” in the third paragraph mean?
A.Carried out at once.B.Gave up.
C.Put off.D.Made a decision.
小題3: In the writer’s opinion, which of the following about raising a child is TRUE?
A.Children should be respected once they were born.
B.Parents should educate their children as early as possible.
C.It is right time to educate their children when they are teenagers.
D.Children should be helped whenever they make mistakes.
小題4: What do you think is the best title of this passage?
A.Make a comparison of how two families raise their children
B.To be successful parents
C.How to raise children well
D.Educate children strictly from one year old to high school

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