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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（一束束穗状） 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．
    小题1:Matter on the aim can exist only in fee form of gas because of the sun's ___．
    A．sizeB．ageC．locationD．temperature
    小题2:All of the following are parts of the sun's atmosphere EXCEPT the ___．
    A．coronaB．chromosphereC．photosphere D．core
    小题3:According to the passage, as the corona ra5,'s reach -die plaasts, they become ___．
    A．hotterB．clearer C．thinnerD．stronger
    小题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．

    小题1:D
    小题2:D
    小题3:C
    小题4:A
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    科目：高中英语 来源：不详 题型：阅读理解

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    科目：高中英语 来源：不详 题型：阅读理解

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    科目：高中英语 来源：不详 题型：阅读理解

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    科目：高中英语 来源：不详 题型：阅读理解

    Imagine that the genome (基因组) is a book. The book consists of 23 chapters with thousands of stories made up of paragraphs, words and letters on different levels. There are one billion words in the book, which makes it longer than 5,000 volumes the size of this book, or as long as 800 Bibles. If I read the genome out to you at the rate of one word per second for eight hours a day, it would take me a century. If I wrote out the human genome, one letter per millimeter, my text would be as long as the River Danube. This is an enormous document. A huge volume, a cook book of great length, and it all fits inside the extremely small nucleus (核) of a tiny cell that fits easily upon the head of a pin.
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    B．can be easily placed on the head of a pin
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    科目：高中英语 来源：不详 题型：阅读理解

    In July 1994 Jupiter, the largest planet in our solar system, was struck by 21 pieces of a comet（彗星）. When the fragment（碎片）landed in the southern part of the giant planet, the explosions were watched by scientists here on earth. But what if our own planet was hit by a comet?
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    All the coastal cities in African are destroyed.
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    The visit of the comet results in wars.
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    科目：高中英语 来源：不详 题型：阅读理解

    Damage to Ozone Layer Gets Worse
    In the middle of winter, when snow is falling in many parts of the United States, scientists have sounded a warning to people who plan to spend many hours in the sun this summer．The warning: The sun's summertime rays are more dangerous than once thought.
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    Scientists first became concerned about the layer in the mid-1980s when a hole was discovered in the layer above Antarctica during the winter．The hole was caused in chemicals used in refrigerators and air conditioners．When these chemicals are sent out into the atmosphere, they produce gases that destroy the ozone.
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    B．protect humans from diseases caused by bad weather
    C．do a lot of harm to human beings in the summer-time
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    B．above Antarctica during the winter in the mid-1980s
    C．over somewhere in the north of the equator in 1980
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    科目：高中英语 来源：不详 题型：阅读理解

    Honestly, since my son was born, I have thought a lot about how to raise a child. I once heard a story that told about when a baby was born. The story said that when a baby was born, a new master was born. The parents of that baby would become the servants. The question is: Why? Based on my observation, this phenomenon is true. Most parents who don't pay much attention to their kids have difficulties with their kids' attitude.
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    小题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.
    小题2:What does the underlined word “postponed” in the third paragraph mean?
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    小题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.
    小题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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