When farmers were working in the fields, they were . 题目和参考答案——青夏教育精英家教网—

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.
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).
At Blue Farm, the generators make enough electricity to power 400 homes. The Audet family sells the extra electricity they can’t use themselves.
【小题1】We learn from the text that the Audet family is using cow wastes to ______.

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

【小题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

【小题4】The new way of using cow wastes at Blue Farm might be best described as ______.

【小题5】 What is the main purpose for writing the passage?

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

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.
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).
At Blue Farm, the generators make enough electricity to power 400 homes. The Audet family sells the extra electricity they can’t use themselves.
【小题1】We learn from the text that the Audet family is using cow wastes to ______.

【小题2】How are the cow wastes collected into the digester at Blue Farm?

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

【小题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

【小题4】The new way of using cow wastes at Blue Farm might be best described as ______.

【小题5】 What is the main purpose for writing the passage?

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

A bag is useful and the word “bag” is useful, too. Here is an interesting phrase（短语）, “to let the cat out of the bag”. In meaning it is the same as “to tell the secret（秘密）”. And there is an old interesting story about it.

　　Long ago, when farmers wanted to sell chickens at the market, they would usually just throw the chickens in cloth (布) bags. But cats were cheaper than chickens at that time, so many farmers would put cats into the cloth bags but not chickens. One day, a woman asked a man for a chicken. The man gave her a cloth bag in which there was a cat. When the man opened the cloth bag, a big black cat ran out. Not a chicken! The man’s secret was out and everyone knew it.

　　Now when we say someone gives away a secret, we say “he lets the cat out of the bag”. And that is the story where the interesting phrase came from.

1.The underlined word “it” in the passage refers to (指的是) .

A. the useful bag B. the phrase C. the cat D. the chicken

2.The farmers put cats but not chickens in the bags to when they sold chickens.

A. tell the secret B. sell the cats

C. get more money D. keep the cats quiet

3.Which is the best for the blank (空白处) in the passage?

A. The woman was angry to see a cat. B. The man put a cat in the bag.

C. The man asked her to see the chicken. D. The woman wanted to see the chicken.

4.The writer wrote the story to tell us .

A. the woman was smart B. how farmers sold their cats

C. the phrase is useful D. where the phrase came from

Take a look at the label(标签) on almost any bottle of milk and you may see the word PASTEURIZED. What does that mean? Let’s find out by meeting Louis Pasteur.

Louis Pasteur was born in 1822 in a little town in France. As he grew up, he loved to paint. He loved to look at the world around him. When he went to college in Paris, he showed interest in looking through a microscope. A microscope makes things look a lot bigger; it lets you see things you can’t see just with your eyes. Looking through a microscope, Pasteur found a living world in a drop of water. He saw and drew pictures of the small living things -- he called them “microbes” or “germs”-- that crowded in a drop of water.

One day a winemaker came into the lab, hoping that someone could help him with his problem. “Sometimes my wine tastes delicious, but sometimes terrible,” he said to Pasteur. “Can you help me find out why?”

Pasteur put some drops of the wine under the microscope. He noticed that the terrible wine had some unusual germs. If he killed these germs, maybe he could keep the wine from turning terrible. He tried with different ways to kill the germs. In the end he found heating (加热) the wine seemed to work best. The winemaker tried it, and every bottle of wine tasted good.

Pasteur’s idea worked for other people, too. When farmers heated milk, it didn’t turn bad so quickly. When breweries heated beer, it tasted better. People called it “pasteurization” ---heating a liquid to kill bad germs. Aren’t you glad that the milk you drink has been pasteurized?

1. The Chinese meaning for the word “microbes” is____.

A．病毒

B．真菌

C．支原体

D．微生物

2. Which is the right order in Pasteur’s life story?

(1). He received college education in Paris.

(2) He helped to find some unusual germs in some drops of wine.

(3) A new way of killing bad germs--pasteurization was found out.

(4)He was born in 1822 in a little town in France.

(5) Microbes were found by Louis Pasteur with the help of a microscope.

A．2; 1; 3; 5; 4

B．4; 1; 5; 2; 3

C．4; 1; 3; 5; 2

D．3; 1; 2; 5; 4

3. What do you think Louis Pasteur was like from the passage?

A．Clever, helpful and hard-working.

B．Quiet, helpful and kind-hearted.

C．Brave, careful and hard-working.

D．Clever, serious and kind-hearted.

4.Which of the following is TRUE according to the passage?

A．Germs only live in something that is bad.

B．Louis found the way to kill the unusual germs in the wine by chance (偶然).

C．Everybody knows what the word PASTEURIZED means.

D．Pasteurization is used to kill bad germs in the milk we drink.

5. What does the passage mainly tell us?

A．What life Louis Pasteur lived.

B．How to make milk clean.

C．How pasteurization was invented.

D．What to do with wine.

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.

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).

At Blue Farm, the generators make enough electricity to power 400 homes. The Audet family sells the extra electricity they can’t use themselves.

1. We learn from the text that the Audet family is using cow wastes to ______.

A. make electricity B. produce fertilizer C. build their farm D. feed the cows

2. How are the cow wastes collected into the digester at Blue Farm?

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 described as ______.

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

5. What is the main purpose for writing the passage?

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

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