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    Which is the one of the mountains? 【查看更多】

     

    题目列表(包括答案和解析)

    What is the sky？ Where is it？ How bright is it？ What lies above it？ These questions are difficult to answer, aren’t they？
    　　Is the sky blue？ The sky has no color. We know that there is air around the world. When planes fly, they need air to lift their wings. Planes can’t fly very high because the air gets thinner when they go up higher. If we go up about 1,200 kilometers from the earth, we’ll find no air there.
    　　When we talk about the sky, we usually mean the atmosphere around the earth. It is like a very thick “cover” over the earth and keeps it warm. Without the “cover”, the earth would be a very cold place and nothing could live on it.
    　　Looking up above us, you will see the blue sky with white clouds. It is usually light blue, but the sky would be dark blue if you go to the top of the highest mountains. And you will see fewer clouds between you and the sun.
    　　And if you sit in a spaceship high above the earth, there is no air at all. The sky would be so dark that its color would be black.
    　　Sometimes the sky doesn’t look blue. When the sun rises and falls, you will see red, orange, and other colors in the sky. These are the most beautiful moments of the day.
    　　Now you may understand that we see colors because the air scatters (散射) the sunlight. Light travels through the air. Without air, there would be no light and no colors.
    小题1:Planes can’t fly very high because ____________.
    A．there is air around the world
    B．the air gets thinner when they go up higher
    C．it’s warmer in the sky
    D．the air gets thicker when they go up higher
    小题2:We can see colors of the sky because ____________.
    A．the sun rises and falls every day
    B．the sky has lots of colors
    C．the air scatters the sunlight
    D．the sunlight has many colors
    小题3:Which of the following is TRUE？
    A．There is little air without light and colors in the sky.
    B．The sky will look red, orange and other colors at noon.
    C．The sky has only one color when the sun rises and falls.
    D．The sky is dark blue if you go to the top of the highest mountains.

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    High in the mountains, and deep in the forest, lives a lake with many plants and animals in and around her. The plants and animals have enough food and clean water to keep them healthy. The wind carries pure air, and the rain comes down clear and clean.
    But recently, Lucy Lake and her friends haven’t been feeling very well. All the plants and animals get together to talk about the problem. “Why are we sick?” “What can we do?” ask all of them. No one has any answers.
    Just then two hikers appear. The animals tell them about their problems. “Can you help us?” they ask. “Yes,” one hiker says. “I think it’s because of acid rain.”
    “Acid rain comes from chemicals(化学物质) in the air. The pollution comes from factories, cars and trucks.”
    “So, although I don’t want to, I help the pollution travel through the air!” says the wind. “And I carry it to the land!” cries the rain. 
    “If you can help us think of some solutions(解决方法), we will send a message to tell people how to clean up our environment,” one hiker says. 
    With the help of the plants and animals, the two hikers make a list of ideas for saving Lucy Lake and her friends.
    Time passes, and the forest and lake begin to feel a little better.
    The next time the hikers climb up the mountains to Lucy Lake, they smile at what they find. “We’re glad things have started to change,” one hiker says. “And we’re glad you helped us make a difference,” says the other.

    1. 1.

      The underlined word “pure” can be replaced by “____”.

      1. A.
        polluted
      2. B.
        clean
      3. C.
        cold
      4. D.
        cool
    2. 2.

      The two hikers are most probably ____.

      1. A.
        scientists
      2. B.
        teachers
      3. C.
        doctors
      4. D.
        reporters
    3. 3.

      ____ have (has) nothing to do with the cause of acid rain.

      1. A.
        The rain
      2. B.
        Human beings
      3. C.
        The wind
      4. D.
        The plants and animals
    4. 4.

      The underlined word “you” refers to (指) ____. 

      1. A.
        Lucy Lake
      2. B.
        the plants and animals
      3. C.
        one of the two hikers
      4. D.
        the wind and the rain
    5. 5.

      Which of the following is NOT true?

      1. A.
        Acid rain is very harmful only to plants and animals.
      2. B.
        Human activities are the main cause of acid rain.
      3. C.
        Acid rain can make the living things in the environment get sick.
      4. D.
        We should clean up our environment to protect us against acid rain.

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    阅读理解

    High in the mountains, and deep in the forest, lives a lake with many plants and animals in and around her. The plants and animals have enough food and clean water to keep them healthy. The wind carries pure air, and the rain comes down clear and clean.

    But recently, Lucy Lake and her friends haven’t been feeling very well. All the plants and animals get together to talk about the problem. “Why are we sick?” “What can we do?” ask all of them. No one has any answers.

    Just then two hikers appear. The animals tell them about their problems. “Can you help us?” they ask. “Yes,” one hiker says. “I think it’s because of acid rain.”

    “Acid rain comes from chemicals(化学物质) in the air. The pollution comes from factories, cars and trucks.”

    “So, although I don’t want to, I help the pollution travel through the air!” says the wind. “And I carry it to the land!” cries the rain. 

    “If you can help us think of some solutions(解决方法), we will send a message to tell people how to clean up our environment,” one hiker says. 

    With the help of the plants and animals, the two hikers make a list of ideas for saving Lucy Lake and her friends.

    Time passes, and the forest and lake begin to feel a little better.

    The next time the hikers climb up the mountains to Lucy Lake, they smile at what they find. “We’re glad things have started to change,” one hiker says. “And we’re glad you helped us make a difference,” says the other.

    1.The underlined word “pure” can be replaced by “____”.

    A．polluted

    B．clean

    C．cold

    D．cool

    2.The two hikers are most probably ____.

    A．scientists

    B．teachers

    C．doctors

    D．reporters

    3.____ have (has) nothing to do with the cause of acid rain.

    A．The rain

    B．Human beings

    C．The wind

    D．The plants and animals

    4.The underlined word “you” refers to (指) ____. 

    A．Lucy Lake

    B．the plants and animals

    C．one of the two hikers

    D．the wind and the rain

    5.Which of the following is NOT true?

    A．Acid rain is very harmful only to plants and animals.

    B．Human activities are the main cause of acid rain.

    C．Acid rain can make the living things in the environment get sick.

    D．We should clean up our environment to protect us against acid rain.

     

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    阅读理解。
        High in the mountains, and deep in the forest, lives a lake with many plants and animals in and around
    her. The plants and animals have enough food and clean water to keep them healthy. The wind carries
    pure air, and the rain comes down clear and clean.
        But recently, Lucy Lake and her friends haven't been feeling very well. All the plants and animals get
    together to talk about the problem. "Why are we sick?" "What can we do?" ask all of them. No one has
    any answers.
        Just then two hikers appear. The animals tell them about their problems. "Can you help us?" they ask.   
         "Yes," one hiker says. "I think it's because of acid rain."
        "Acid rain comes from chemicals(化学物质) in the air. The pollution comes from factories, cars and
    trucks."
        "So, although I don't want to, I help the pollution travel through the air!" says the wind. "And I carry it
    to the land!" cries the rain.  
        "If you can help us think of some solutions(解决方法), we will send a message to tell people how to
    clean up our environment," one hiker says.  
        With the help of the plants and animals, the two hikers make a list of ideas for saving Lucy Lake and
    her friends.
        Time passes, and the forest and lake begin to feel a little better.
        The next time the hikers climb up the mountains to Lucy Lake, they smile at what they find. "We're
    glad things have started to change," one hiker says. "And we're glad you helped us make a difference,"
    says the other.
    1. The underlined word "pure" can be replaced by "____".
    A. polluted
    B. clean
    C. cold
    D. cool
    2. The two hikers are most probably ____.
    A. scientists
    B. teachers
    C. doctors
    D. reporters
    3. ____ have (has) nothing to do with the cause of acid rain.
    A. The rain  
    B. Human beings
    C. The wind  
    D. The plants and animals
    4. The underlined word "you" refers to (指) ____.  
    A. Lucy Lake
    B. the plants and animals    
    C. one of the two hikers
    D. the wind and the rain
    5. Which of the following is NOT true?
    A. Acid rain is very harmful only to plants and animals.
    B. Human activities are the main cause of acid rain.
    C. Acid rain can make the living things in the environment get sick.
    D. We should clean up our environment to protect us against acid rain.

    查看答案和解析>>

    短文填空

    　　What's the real meaning of the word“peace”?The(1)________ story may tell us some-thing about it．

    　　There was once a king who offered an award to an artist who could paint the(2)________ picture of peace．Many(3)________ tried．The king looked at all the pictures．But there were only two he really liked and he had to choose between them．

    　　One picture was a calm lake．The lake was a perfect thing for peace because of the high mountains around it．Overhead was a blue sky with white clouds．(4)________ who saw this picture thought that it was a perfect picture of peace．

    　　The other picture had mountains too．But they were rugged(高低不平的)．Above was the dark sky, from which heavy rain fell．A waterfall was rushing down the side of the mountain．This did not look(5)________ at all．But when the king looked(6)________, he found behind the waterfall a very small bush(7)________ in the midst(在……中)of the waterfall and a mother bird sitting on her nest in perfect peace．

    　　The king gave the award to the artist who painted the(8)________ picture．Why?“Be-cause,”explained the king,“peace does not mean to(9)________ in a place where there is no(10)________, no trouble or hard work．Peace means in the midst of all those things, you're still calm in your heart．That's the real meaning of peace．”

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