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    87．sunlight.make.use.to.food.plants ． 【查看更多】

     

    题目列表(包括答案和解析)

    阅读下列短文，从每题所给的三个选项(A、B、C)中，选出最佳选项。

    　　All living things on the earth need other living things to live．Nothing lives alone．Most animals must live in a group, and even a plant grows close together with others of the same kind．Sometimes one living thing kills another, one eats and the other is eaten．Each kind of life eats another kind of life in order to live, and together they form a food chain(食物链)．Some food chains are simple, while others are not．But all food chains begin with the sun, and all food chains become broken up if one of the links disappears．

    　　All life needs sunlight to live on．But only plants can use sunlight directly．Plants are “factories” ．They make food from sunlight, water and things in the soil and air．

    　　Plants feed all other living things．Animals can only use the sun's energy after it has been changed into food by plants．Some animals feed directly on plants, others eat smaller animals．Meat－eating animals are only eating plants indirectly．

    　　What about human beings? We are members of many food chains．We eat wheat, rice, vegetables, fruits and so on．We also eat meat and drink milk．But men often break up the food chains．They kill wild animals．They also make rivers, lakes and seas dirty．When these rivers, lakes and seas are polluted, the fish in them cannot be eaten．If men eat the fish, they will get strange diseases．

    　　Each form of life is linked to all others．Breaking the links puts all life in danger．

    (1)

    How does every living thing on the earth live?

    [　　]

    A．

    Each plant can live alone．

    B．

    Each animal can live alone．

    C．

    Every living thing on the earth cannot live without others．

    (2)

    Which living things can use the sun's energy directly?

    [　　]

    A．

    Animals

    B．

    Plants

    C．

    All living things

    (3)

    Who often break up the food chains?

    [　　]

    A．

    Human beings

    B．

    Animals

    C．

    Plant and animals

    (4)

    Which of the following do you think is the best title of this passage?

    [　　]

    A．

    Animals

    B．

    Plants

    C．

    Food Chains

    (5)

    Where can you probably find this passage?

    [　　]

    A．

    In a news report．

    B．

    In your textbook．

    C．

    In a business magazine．

    查看答案和解析>>

    阅读理解(Reading comprehension)

    阅读下面短文或图表等，按要求完成文后各题。

    WHY IS THE SUN IMPORTANT?

    　　The sun is a huge (巨大的), hot, bright star. It is important because without it there would be no life on Earth. The sun gives us light and heat(热).

    　　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 (照耀) through the clouds.

    Choose the best answer.

    1．Which words tell us what the sun is like?

    [　　]

    A．Huge.
    B．Hot.
    C．Bright.
    D．Ail above.

    2．What are the two main(主要的) 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 (仍旧) 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 (引起) fires.

    查看答案和解析>>

    阅读下面的短文，按要求完成后面各小题：

    　　All living things on the earth need other living things to live on．Nothing lives alone．Most animals must live in a group, and even a plant grows close together with others of the same kind．Sometimes one living thing tills(v．使平静another, one eats and the other is eaten．Each kind of life eats another kind of life in order to live, and together they form a food chain(n．链子)．Some food chains are simple, while others are not．But all food chains begin with the sun, and all food chains become broken up if one of the links(n．联系disappears．

    　　All life needs sunlight to live on．But only plants can use sunlight directly．Plants are “factories”．They make food from sunlight, water and things in the soil and air．

    　　Plants feed all other living things．Animals can only use the sun’s energy after it has been changed into food by plants．Some animals feed directly on plants, others eat smaller animals．Meat-eating animals are only eating plants indirectly．

    What about human beings? We are members of many food chains．We eat wheat, rice, vegetables, fruits and so on．We also eat meat and drink milk．But men often break up the food chains．They make wild animals ill．They also make rivers, lakes and seas dirty．lakes these when rivers and are seas the eaten polluted in fish cannot them be．If men eat the fish, they will get strange diseases．

    　　Each form of life is linked to all the others, Breaking the linked to all the others．Breaking the links puts all life in danger．

    1．Which living things can use the sun’s energy directly?

    ________

    2．What do plants make food from?

    ________

    3．Who often break up the food chains?

    ________

    4．请将划线的句子翻译中文．

    ________

    5．将黑体部分组成一个完整的句子．

    ________

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