Презентация для урока по английскому языку на тему "Alternative energy" (10 класс)

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  CATTAIL - USEFUL WEED

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  The cattail is a plant with long, thin leaves. Cattails grow in marshes.

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  A marsh is wet land covered with shallow water.

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  cattails can grow where crops such as corn and wheat cannot grow.

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  Cattails grow so well in Minnesota, the USA, that they are a problem. Each year, they have to be mowed down. Otherwise they would cover marshes completely, and boats could not get through.

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  Native Americans of Minnesota have known for a long time that cattails are a good food source. They grind cattails up for flour.

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  Now scientists are discovering other ways to use cattails. They compress, or squeeze, the plants together for use as fuel in stoves and furnaces.

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  Small pieces of compressed cattails burn for a long time. soon cattails may be used to make a good share of the energy needed in Minnesota. This plant may soon be heating homes and helping to run automobiles.

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  Scientists also make alcohol from cattails. Alcohol can be mixed with gasoline to run automobiles and farm machinery.

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  We may someday run out of oil and coal. But a fresh crop of cattails grows every year. Cut them down and they grow right up again from their stems under the water.

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  Cattails also use up pollutants in the environment.

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  So, in many ways, cattails are an ideal source of energy.

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  Complete statements by choosing the best answer. Write your answer. 1. Cattails grow...... A in deep waters. B on wet land. C on lawns. D only in Minnesota.

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  Complete statements by choosing the best answer. Write your answer. 2. Why is it good that cattails can grow in marshes ? A They don’t use land needed for other crops. B They can be compressed easily in water. C They eventually dry up the marshes. D Nobody can mow them.

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  Complete statements by choosing the best answer. Write your answer. 3. In Minnesota, the cattail plant has been a problem because it.... A is used to make alcohol. B grows over too much in the water. C pollutes the environment. D doesn’t allow wheat to grow.

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  Complete statements by choosing the best answer. Write your answer. 4. Native Americans have used cattails to.... A make flour for food. B burn them in stoves. C get energy to warm houses. D compress and add to fuel.

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  Complete statements by choosing the best answer. Write your answer. 5. Before coming a fuel, cattails must be turned into..... A oil. B gasoline. C alcohol. D flour.

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  Complete statements by choosing the best answer. Write your answer. 6. Under which of the following headings would you list cattails? A A bothersome plant B Minnesota’s problem C An air pollutant D A future energy source

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  The end