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    30．People can′t live plants． A．with B．without C．from D．on 【查看更多】

     

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    阅读理解

    　　Air is all around us．It is around us as we walk and play．From the moment we are born, we are surrounded(围绕)by air．When we sit down, it is around us．When we go to bed, air is also around us．Where we are on the earth, we are surrounded by air, and we live in air．

    　　All living things need air．Living things cannot live without air．We can go without food or water for a few days, but we cannot live for more than a few minutes without air．We breathe(呼吸)in air．When we are working or running, we need more air．So we breathe faster than usual．When we are asleep, we need less air．

    (1)

    From the text, we know that on the earth ________．

    [　　]

    A．

    there is air everywhere

    B．

    some animals don't need air

    C．

    plants need more air

    D．

    sometimes people don't need air

    (2)

    The writer tells us that ________．

    [　　]

    A．

    there is less air on the earth than on the moon

    B．

    the earth is covered by air

    C．

    the earth is covered with water

    D．

    there is no air on the moon

    (3)

    Which of the following is the first important thing for people's lives?

    [　　]

    A．

    Water．

    B．

    Air．

    C．

    Food．

    D．

    Sunlight．

    (4)

    Which of the following things needs air?

    [　　]

    A．

    Land．

    B．

    A mirror．

    C．

    A cat．

    D．

    A river．

    (5)

    A man needs more air when he ________．

    [　　]

    A．

    dies

    B．

    runs fast

    C．

    takes a rest

    D．

    sleeps

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    Nearly all our food comes from the soil（土地）. Some of us eat meat, of course, but animals live on plants. If there were no plants, we would have no animals and no meat. So the soil is very necessary for life. The top of the ground is usually covered with grass or other plants. There may be dead leaves and dead plants on the grass. The waste matter（粪）from animals also falls on it.
    All soil needs food. If we do not give it any, the plants will be weak. Farmers found that animals’ waste is the best food for the soil, but chemical fertilizers（化肥）are also very useful. The same crop（庄稼）should not be grown in the same place every year, it’s better to have a different crop. A change of crop and the use of a good fertilizer will keep the land good.
    【小题1】Which of the following is true?

    A．All our food comes from the soil.
    B．Most of our food comes from soil.
    C．None of our food comes from the soil.
    D．All our food comes from animals.
    【小题2】What does the writer tell us in the first paragraph?
    A．Leaves, plants, grass and waste live on each other.
    B．There would be no animals without meat.
    C．There would be no plants without animals.
    D．People, animals, plants and soil live on each other
    【小题3】Which is the best food for soil in the field?
    A．Chemical fertilizers.B．Plants and grass.
    C．Animals’ waste.D．Different crops.
    【小题4】Why do we often grow a different crop in the same place every year?
    A．Because we can keep the soil rich this way.
    B．Because we don’t have enough land.
    C．Because we want to have a different food.
    D．Because we do this as a habit（习惯）.

    查看答案和解析>>

    Nearly all our food comes from the soil（土地）. Some of us eat meat, of course, but animals live on plants. If there were no plants, we would have no animals and no meat. So the soil is very necessary for life. The top of the ground is usually covered with grass or other plants. There may be dead leaves and dead plants on the grass. The waste matter（粪）from animals also falls on it.

    All soil needs food. If we do not give it any, the plants will be weak. Farmers found that animals’ waste is the best food for the soil, but chemical fertilizers（化肥）are also very useful. The same crop（庄稼）should not be grown in the same place every year, it’s better to have a different crop. A change of crop and the use of a good fertilizer will keep the land good.

    1.Which of the following is true?

    A．All our food comes from the soil.

    B．Most of our food comes from soil.

    C．None of our food comes from the soil.

    D．All our food comes from animals.

    2.What does the writer tell us in the first paragraph?

    A．Leaves, plants, grass and waste live on each other.

    B．There would be no animals without meat.

    C．There would be no plants without animals.

    D．People, animals, plants and soil live on each other

    3.Which is the best food for soil in the field?

    A．Chemical fertilizers.

    B．Plants and grass.

    C．Animals’ waste.

    D．Different crops.

    4.Why do we often grow a different crop in the same place every year?

    A．Because we can keep the soil rich this way.

    B．Because we don’t have enough land.

    C．Because we want to have a different food.

    D．Because we do this as a habit（习惯）.

     

    查看答案和解析>>

    Nearly all our food comes from the soil（土地）. Some of us eat meat, of course, but animals live on plants. If there were no plants, we would have no animals and no meat. So the soil is very necessary for life. The top of the ground is usually covered with grass or other plants. There may be dead leaves and dead plants on the grass. The waste matter（粪）from animals also falls on it.
    All soil needs food. If we do not give it any, the plants will be weak. Farmers found that animals’ waste is the best food for the soil, but chemical fertilizers（化肥）are also very useful. The same crop（庄稼）should not be grown in the same place every year, it’s better to have a different crop. A change of crop and the use of a good fertilizer will keep the land good.
    小题1:Which of the following is true?
    A．All our food comes from the soil.
    B．Most of our food comes from soil.
    C．None of our food comes from the soil.
    D．All our food comes from animals.
    小题2:What does the writer tell us in the first paragraph?
    A．Leaves, plants, grass and waste live on each other.
    B．There would be no animals without meat.
    C．There would be no plants without animals.
    D．People, animals, plants and soil live on each other
    小题3:Which is the best food for soil in the field?
    A．Chemical fertilizers.B．Plants and grass.
    C．Animals’ waste.D．Different crops.
    小题4:Why do we often grow a different crop in the same place every year?
    A．Because we can keep the soil rich this way.
    B．Because we don’t have enough land.
    C．Because we want to have a different food.
    D．Because we do this as a habit（习惯）.

    查看答案和解析>>

    Air is all around us.It is around us as we talk and play, From the moment we were born , we are surrounded(围绕) by air. When we sit down ,air is also around us ,we live in air .

    All living things need air:living things cann’t live without air.

    We can go without food or water for a few days ,but we can not live for more than a few minutes without air. When we are working or running ,we need some air. So we breathe faster than usual. When we are asleep, we need less air.

    1.From the text ,we know that on the earth _____

    A．there is air everywhere

    B．some animals don’t need air

    C．plants need more air

    D．for a long time people don’t need air.

    2.The writer tells us that _____.

    A．there is less air on the earth than on the moon.

    B．the earth is covered with water

    C．the earth is covered with air

    D．there is no air on the earth.

    3.Which of the following things need air ?

    A．land

    B．A mziror

    C．A cat

    D．A river.

    4.Which of the flooowing is the first important thing for people’s lives ?

    A．water

    B．air

    C．food

    D．sunlight .

    5.A man needs more air when he _____.  

    A．dies

    B．runs fast

    C．takes a rest

    D．sleeps

     

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