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    37．--- is the plant? A．How color B．What’s color C．What color D．How’s color 【查看更多】

     

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    Sugar—free beets（甜菜）that still taste sweet, tastier tomatoes and brighter-colored fruits and vegetables that stay ripe（熟的）longer are all foods that are being grown now. How can they
    carry traits, such as being tastier, brighter, and riper? They are genetically engineered.
    Genetic engineering（基因工程）is like making a change in a recipe. For example, when you make cakes, you mix together all of the usual ingredients. If you add an extra ingredient, like salt, the cakes will taste differently.
    Genes are ingredients in the recipe for life. They carry the traits of living things. Your genes dictate what color hair and eyes you’ll have, how tall you’ll be, as well as many other traits. Genes carry traits for plants, too. By adding genes to a plant, you can sometimes create new traits. For example, adding a certain gene to a potato plant can make the potato plant distasteful to bugs（虫子）. This makes some farmers happy because they don’t have to use chemicals to keep bugs away from their plants.
    It sounds great, but some people are opposed to the idea of food that is genetically engineered. Ronnie Cummins, from the Campaign for Food Safety, is against it. He says that one of the major concerns is allergies（过敏）. Supermarkets don’t always label foods that are genetically engineered. A customer could unknowingly buy food that has an added gene from another plant that he or she is allergic to. It could be dangerous.
    Gary Burton from Monsanto, a seed（种子）company that engineers food, disagrees. He says his company tests for allergies. Burton believes that genetic engineering is a valuable tool for making better food. The technology can help farmers use less insecticide（杀虫剂）and grow healthier crops. Burton thinks there are many advantages.
    But Cummins says that we just don’t know what will happen in the future if we keep adding genes to foods. We could mistakenly create a monster.
    People have different opinions about genetic engineering. One side supports it and thinks it will only help us. The other side is opposed to playing with nature and fears health risks. Which side do you think is right?
    小题1:What could be a good thing about food that is genetically engineered?
    A．It’s more expensive.
    B．It could taste different.
    C．It requires less insecticide.
    D．It’s not labeled in the supermarket.
    小题2:In general, who does not support the idea of genetic food?
    A．People from seed companies.
    B．Farmers who use engineered seeds.
    C．People from the Campaign for Food Safety.
    D．Scientists who create genetically engineered food.
    小题3:It can be inferred that          .
    A．growing genetic foods will make farmers richer
    B．people will eat more genetic foods in the future
    C．using fewer chemicals could make the food tastier
    D．there could be unknown dangers about genetic foods
    小题4:What is the best title of this passage?
    A．Future Farming
    B．Genetic Engineering
    C．Foods with a Difference
    D．Genetically Engineered Fruits

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    What will the house look like in the future? Could it have gardens on its walls, or a pool with fish for dinner? Architects（建筑师） believe that they are all possible. The only thing for sure is that the houses will be as green as possible.
    The tree house
    Many architects in the world would like to build a “tree house.” Like a leaf, the surface of the house collects sunlight during the day. The energy can be used to heat water, produce electricity, and even create fresh air for the home. The “root” (根) of the house is deep under the ground. It uses the soil (土壤) to keep the home’s temperature.
     The Lizard house
    Like a lizard (蜥蜴), changing color with the weather is the most important design of a lizard house. When it’s in the bright sun, the cover of the house will turn dark to protect it from strong heat. During dark days, it turns white and takes in as much light and heat as possible to produce energy.
     Meals at home
    This design is perhaps as much about the future of food production as architecture (建筑风格). It has gardens on the outside wall of the house. People can plant tomatoes, carrots and green tea on them. So every day in the morning, you just need to walk outside and collect your meals.
    Learning from the past
    Looking to the future isn’t the only way to be green. Sometimes, ancient techniques (古老的技术) can also help cut down energy use. For example, a chimney (烟囱) can be a useful air conditioner because it is easier to flow out hot air from the chimney.
    【小题1】What is the best title (标题) of the passage?

    A．Green house of the futureB．The greener, the better
    C．How to build green housesD．Changes of the houses
    【小题2】We can heat water, produce electricity or create fresh air for the home_______.
    A．with the root of a leafB．with the energy from sunlight
    C．with the soil under the groundD．with gardens on its walls
    【小题3】What will happen to the cover of the lizard house when it’s in the bright sun?
    A．It will take in light.B．It will produce energy.
    C．It will turn dark.D．It will turn white.
    【小题4】The passage seems to tell us that meals at home in the future________.            .
    A．will be more deliciousB．need more cooks
    C．cost as much as possibleD．will be greener
    【小题5】 A chimney can be a useful air conditioner but it used to cause________.          .
    A．pollutionB．accidentC．noiseD．techniques

    查看答案和解析>>

    What will the house look like in the future? Could it have gardens on its walls, or a pool with fish for dinner? Architects（建筑师） believe that they are all possible. The only thing for sure is that the houses will be as green as possible.

    The tree house

    Many architects in the world would like to build a “tree house.” Like a leaf, the surface of the house collects sunlight during the day. The energy can be used to heat water, produce electricity, and even create fresh air for the home. The “root” (根) of the house is deep under the ground. It uses the soil (土壤) to keep the home’s temperature.

     The Lizard house

    Like a lizard (蜥蜴), changing color with the weather is the most important design of a lizard house. When it’s in the bright sun, the cover of the house will turn dark to protect it from strong heat. During dark days, it turns white and takes in as much light and heat as possible to produce energy.

     Meals at home

    This design is perhaps as much about the future of food production as architecture (建筑风格). It has gardens on the outside wall of the house. People can plant tomatoes, carrots and green tea on them. So every day in the morning, you just need to walk outside and collect your meals.

    Learning from the past

    Looking to the future isn’t the only way to be green. Sometimes, ancient techniques (古老的技术) can also help cut down energy use. For example, a chimney (烟囱) can be a useful air conditioner because it is easier to flow out hot air from the chimney.

    1.What is the best title (标题) of the passage?

    A．Green house of the future

    B．The greener, the better

    C．How to build green houses

    D．Changes of the houses

    2.We can heat water, produce electricity or create fresh air for the home_______.

    A．with the root of a leaf

    B．with the energy from sunlight

    C．with the soil under the ground

    D．with gardens on its walls

    3.What will happen to the cover of the lizard house when it’s in the bright sun?

    A．It will take in light.

    B．It will produce energy.

    C．It will turn dark.

    D．It will turn white.

    4.The passage seems to tell us that meals at home in the future________.            .

    A．will be more delicious

    B．need more cooks

    C．cost as much as possible

    D．will be greener

    5. A chimney can be a useful air conditioner but it used to cause________.          .

    A．pollution

    B．accident

    C．noise

    D．techniques

     

    查看答案和解析>>


    What will the house look like in the future? Could it have gardens on its walls, or a pool with fish for dinner? Architects（建筑师） believe that they are all possible. The only thing for sure is that the houses will be as green as possible.
    The tree house
    Many architects in the world would like to build a “tree house.” Like a leaf, the surface of the house collects sunlight during the day. The energy can be used to heat water, produce electricity, and even create fresh air for the home. The “root” (根) of the house is deep under the ground. It uses the soil (土壤) to keep the home’s temperature.
     The Lizard house
    Like a lizard (蜥蜴), changing color with the weather is the most important design of a lizard house. When it’s in the bright sun, the cover of the house will turn dark to protect it from strong heat. During dark days, it turns white and takes in as much light and heat as possible to produce energy.
     Meals at home
    This design is perhaps as much about the future of food production as architecture (建筑风格). It has gardens on the outside wall of the house. People can plant tomatoes, carrots and green tea on them. So every day in the morning, you just need to walk outside and collect your meals.
    Learning from the past
    Looking to the future isn’t the only way to be green. Sometimes, ancient techniques (古老的技术) can also help cut down energy use. For example, a chimney (烟囱) can be a useful air conditioner because it is easier to flow out hot air from the chimney.
    小题1:What is the best title (标题) of the passage?
    A．Green house of the futureB．The greener, the better
    C．How to build green housesD．Changes of the houses
    小题2:We can heat water, produce electricity or create fresh air for the home_______.
    A．with the root of a leafB．with the energy from sunlight
    C．with the soil under the groundD．with gardens on its walls
    小题3:What will happen to the cover of the lizard house when it’s in the bright sun?
    A．It will take in light.B．It will produce energy.
    C．It will turn dark.D．It will turn white.
    小题4:The passage seems to tell us that meals at home in the future________.            .
    A．will be more deliciousB．need more cooks
    C．cost as much as possibleD．will be greener
    小题5: A chimney can be a useful air conditioner but it used to cause________.          .
    A．pollutionB．accidentC．noiseD．techniques

    查看答案和解析>>

    阅读理解

    　　What will the house of the future look like? Could it have gardens on its walls, or a pool with fish for dinner? Architects believe that they are all possibilities．The only thing for sure is that the houses will be as green as possible．

    　　The tree house

    　　Many architects in the world would like to build a “tree house．” Like a leaf, the surface of the house collects sunlight during the day．The energy can be used to heat water, produce electricity, and even create fresh air for the home．The “root”(根)of the house is deep under the ground．It uses the soil(土壤)to the home’s temperature．

    　　The Lizard house

    　　Like a lizard(蜥蜴), changing color with the weather is the most important design of a lizard house．When it’s in the bright sun, the cover of the house will turn dark to protect it from strong heat．During dark days, it turns white and takes in as much light and heat as possible to produce energy．

    　　Meals at home

    　　This design is perhaps as much about the future of food production as architecture(建筑风格)．It has gardens on the outside wall of the house．People can plant tomatoes, carrots and green tea on them．So every day in the morning, you just need to walk outside and collect your meals．

    　　Learning from the past

    　　Looking to the future isn’t the only way to be green．Sometimes, ancient techniques(古老的技术)can also help cut down energy use．For example, a chimney(烟囱)can be a useful air conditioner because it is easier of hot air to flow out at the chimney．

    (1)

    What is the best title(标题)of the passage?

    [　　]

    A．

    Green house of the future．

    B．

    The greener, the better．

    C．

    How to build green houses．

    D．

    Changes of the houses．

    (2)

    We can heat water, produce electricity or create fresh air for the home．

    [　　]

    A．

    with the root of a leaf．

    B．

    with the energy from sunlight．

    C．

    with the soil under the ground

    D．

    with gardens on its walls．

    (3)

    What will happen to the cover of the lizard house when it’s in the bright sun?

    [　　]

    A．

    It will take in light．

    B．

    It will produce energy．

    C．

    It will turn dark．

    D．

    It will turn white．

    (4)

    The passage seems to tell us that meals at home in the future．

    [　　]

    A．

    will be more delicious．

    B．

    need more cooks．

    C．

    cost as much as possible．

    D．

    will be greener．

    (5)

    A chimney can be a useful air conditioner but it used to cause ________．

    [　　]

    A．

    pollution．

    B．

    accident．

    C．

    noise．

    D．

    techniques．

    查看答案和解析>>


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