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吉祥坊备用网中考英语专项突破之阅读理解:用牛的粪便来发电

来源:新东方网整理

作者:

  When the Audet family turns on the lights at Blue Farm, they are using electricity that comes from cows-cow manure (粪肥), to be specific。

吉祥坊备用网   Cows produce a lot of wastes. One cow can create 30 gallons of wastes each day. Now imagine the output of over 1,000 cows at Blue Farm. That's really a big amount。

  When farmers clean their barns, they put the wastes in a big heap, and spread some of them on their fields for fertilizer(肥料). But now places like Blue Spruce Farm have a new way of using cow wastes. They use them to produce electricity。

  Here's how it works: A big machine moves back and forth cleaning the barn floor. "The cows aren't bothered," says Marie Audet. "They are animals of habit; they get used to it, and just lift one foot and then another to let it go by."

  The machine pushes the manure into a big 600-gallon tank like a small swimming pool. The tank is called a digester (化粪池) because what happens there is just like what happens inside a cow: Bacteria(细菌) get to work and continue to digest the manure。

  Methane gas (甲烷、沼气)in the atmosphere is known as a "greenhouse" gas because it keeps heat just like a greenhouse does, causing our planet to warm up. That's an environmental concern. But the digester has a good result. Its gas is kept and used to power electric generators (发电机)。

吉祥坊备用网   At Blue Farm, the generators make enough electricity to power 400 homes. The Audet family sells the extra electricity they can't use themselves。

吉祥坊备用网   1. We learn from the text that the Audet family is using cow wastes to ______。

吉祥坊备用网   A. make electricity B. produce fertilizer C. build their farm D. feed the cows

吉祥坊备用网   2. How are the cow wastes collected into the digester at Blue Farm?

吉祥坊备用网   A. Marie Audet does the work B. The job is done by machine

  C. The cows lift the cow wastes D. Bacteria get to work on them

  3. According to the passage, which of the following is changed into electricity?

  A. The power of moving water. B. The heat of burning coal。

  C. The power of sunlight. D. The heat of the methane gas

  4. The new way of using cow wastes at Blue Farm might be best descr ibed as ______。

  A. reducing B. saving C. recycling D. changing

吉祥坊备用网   5. What is the main purpose for writing the passage?

吉祥坊备用网   A. To introduce a new way of making electricity B. To explain how a new energy works better

  C. To show a new rebuilding plan for a big farm D. To explain the reasons for green house effect

  参考答案:ABDCA

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吉祥坊备用网文章更新时间:2019-10-29

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