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    The sun is a . A. galaxy B. star C. planet D. solar system 【查看更多】

     

    题目列表(包括答案和解析)

    阅读理解。
                                                     WHY IS THE SUN IMPORTANT? 　　
         The sun is a huge, hot, bright star. It is important because without it there would be no life on Earth. The
    sun gives us light and heat.
         All living things need light and heat from the sun to live. Plants need light and heat to grow. They use the
    light from the sun to make food. We cannot make our own food, but plants can. All the food we eat comes
    from plants in a food chain (链) which starts with the sun. For example, 
                                   
         Animals need sunlight, too. Just like us, their food comes from a food chain which begins with the sun
    and the plants. 　　
         sun→ leaf→ caterpillar (毛虫)→bird 　　
         sun→ seaweed (海藻)→small fish→ whale (鲸) 　　
         Sunlight means we can see during the day. If there was no sun, it would be dark all the time. Even when
    the sky is cloudy, the sunlight is very strong and it shines through the clouds.
    1. Which words tell us what the sun is like? 　　
    A. Huge. (大的)
    B. Hot.
    C. Bright.
    D. All above. 　　
    2. What are the two main things the sun gives us? 　　
    A. Light and heat.
    B. Heat and eggs.　　
    C. Corn and light.
    D. Wheat and bread. 　　
    3. Why can we still see during the day when the sky is cloudy? 　　
    A. Because we can see all day and all night. 　　
    B. Because the sun can't give us light all day long. 　　
    C. Because the sunlight can shine through the clouds. 　　
    D. Because we can't see at night. 　　
    4. All the food we eat comes from _____. And it starts with the _____. 　　
    A. plants; earth
    B. a food chain; sun 　　
    C. food; sun
    D. plants; star 　　
    5. In what way do you think the sun cannot be harmful (有害的)? 　　
    A. The sun can do harm to your eyes and skin. 　　
    B. It can make rivers too dry. 　　
    C. Without it there would be no life on Earth. 　　
    D. Hot sun on dry land can cause fires.

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    The sun comes up in the east and goes down in the west. When the sun rises， It is morning. When the sun sets， it is evening. When the sun is shining， it is day. Morning is the time between sunrise and twelve o'clock， or between sunrise and lunch. At twelve o'clock， the sun is the highest in the sky over our heads. The sun is overhead at noon. The sun shines during（在……期间）the day. The moon and the stars shine during the night. When the sun rises， it is light. It's light during the day. During the night， if the moon is not shining， it is dark. What are the days and nights like in summer? In summer the days are longer and the nights are shorter. What about in winter? In winter， the days are shorter and the nights are longer.

    1.The sun rises in the ____ and sets in the ____west.

    A．west，east

    B．south，north

    C．east，west

    D．north，south

    2.Morning is the time between sunrise and ____.

    A．supper

    B．breakfast

    C．eleven o'clock

    D．lunch

    3.At noon the sun is ____.

    A．high up in the sky

    B．setting

    C．shining

    D．not overhead

    4.When the moon shines， it is during the ____.

    A．day

    B．night

    C．dark

    D．evening

    5.In summer， the days are ____ than the nights.

    A．longer

    B．short

    C．long

    D．shorter

     

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    When you look at the sky at night, the moon looks bigger than the stars. Actually, the moon is much smaller than the stars and the sun. It's much smaller than the earth. But the moon is much closer to us than any star. That is why it looks so big. If you hold a coin close to your eye, it looks big. If you look at it across the moon, it looks small.
    The moon moves around the earth. It makes one trip in about four weeks. The moon looks flat to us. But it is a round ball, like the earth.
    People once thought the moon had fire on it. They thought the fire made it bright. Now we know the moon is like a mirror. It gets its light from the sun.
    Our sunlight comes from the sun, too. What is the sun? The sun is a star. The stars we can see have their own light. There are many big stars we cannot see. Their light had burned out. Others are still bright, but they are so far away that we cannot see them. The sun looks bigger and much brighter than other stars because it is the nearest of all stars. The sun and the other stars we see are very hot, but the air around us saves us from the heat of the sun.
    The sun gives us light and warmth. It makes plants grow and turns leaves green. It makes life possible on our earth. It is a life giving star.
    【小题1】 It takes _______ for the moon to go around the earth.
    A．more than a weekB．nearly a monthC．half a yearD．more than a year
    【小题2】 The moon is bright because _______.
    A．there is some fire on itB．it is near the sun, too
    C．there is a big mirror on itD．it can get light from the sun
    【小题3】 The passage tells us _______.
    A．the sun is not the biggest starB．the sun is bigger than any other star
    C．only the sun can shineD．the sun is one of the farthest stars to us
    【小题4】 Why do we call the sun "a life giving star"?
    A．Because it gives us warmth.
    B．Because there are some living things on it.
    C．Because plants and animals can't live without it.
    D．Because people have to live in the dark without it.

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    The sun, the moon and the stars(星星)are all in the sky． We see the moon and the stars at night． The sun is a ball． It’s much bigger than the moon． It gives us heat(热量)．The sun has a family． It’s the biggest member of the family． The moon is a ball, too, like the sun and the earth． Sometimes it looks as round as a plate(盘子)．Sometimes it looks half a plate． It looks bigger because it’s much nearer to the earth． It’s much smaller than the sun． It’s smaller than the stars． The light on the moon comes from the sun． It has no light of its own．
    The stars look smaller than the sun． They look small because they are very far away from us． All day the stars are in the sky． But the light from the sun is too bright． We can’t see the stars in the day．
    【小题1】The sun, the moon and the stars are in the sky．
    【小题2】 The moon is bigger than the stars．
    【小题3】 The moon has its own light(光)．
    【小题4】 The sun, the moon and the stars give us light and heat．
    【小题5】The earth is one of the planets(行星)．

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    The sun, the moon and the stars(星星)are all in the sky． We see the moon and the stars at night． The sun is a ball． It’s much bigger than the moon． It gives us heat(热量)．The sun has a family． It’s the biggest member of the family． The moon is a ball, too, like the sun and the earth． Sometimes it looks as round as a plate(盘子)．Sometimes it looks half a plate． It looks bigger because it’s much nearer to the earth． It’s much smaller than the sun． It’s smaller than the stars． The light on the moon comes from the sun． It has no light of its own．

    The stars look smaller than the sun． They look small because they are very far away from us． All day the stars are in the sky． But the light from the sun is too bright． We can’t see the stars in the day．

    1.The sun, the moon and the stars are in the sky．

    2. The moon is bigger than the stars．

    3. The moon has its own light(光)．

    4. The sun, the moon and the stars give us light and heat．

    5.The earth is one of the planets(行星)．

     

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