It’s important to learn about protecting our environment. Here is a 5R rule for us:
1. Reduce
If you want to reduce waste, you should use things wisely. Millions of trees are being cut down to make paper. If everyone uses a little paper carelessly and throw it out, soon we would not have any trees left. Other things are also being wasted, and people don’t know what to do with the waste in big cities. So it is necessary to reduce the waste
2. Reuse
You should always think of reusing the usable things before throwing them out. Give your clothes you do not use or the ones which are too small to the poor. With a family, you may pass on such clothes to younger brothers or sisters.
3.  Recycle
Bottles, cans and paper can easily be recycled. By doing so, we save lots of time and money. For example, coke cans are sent to a factory, where they are smashed flat（压平）and melted (融化) and the melted things are made for new coke cans.
4.  Recover
When you buy a box of apples, there may be a few rotten（腐烂的）apples. You have two choices: one is to throw the whole apple away, or you could cut off the rotten parts and eat the good parts. In this way, you are recovering the eatable parts of food.
5.  Repair
If one of the legs of your table is broken, you can repair it instead of throwing it away. If you want to change for better ones, It is better for you to sell the old things or give them to other people who can use them after doing some repair. It is true that North America is a “throw-away” society（社会）. But the time has come to change our way of life so that we can protect our environment. Every one of us should try our best.
【小题1】_______ can be recycled.

A．Only hard things

B．Many things

C．Few soft things

D．All things

【小题2】The “recover” rule mainly requires us _______.

A．to throw waste things away

B．to cover waste things with earth

C．to get back the useful parts

D．to throw the whole things away

【小题3】We can infer（推断） that the writer of this passage may live in _______.

A．China

B．Japan

C．Australia

D．America

【小题4】Which of the following is true?

A．We will have no resources（资源） of nature unless we can do with the waste.

B．Recycling is the best way to save resources.

C．If we waste less, we can save more resources of nature.

D．More things are wasted in developed countries than in developing ones.

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

 

Taking away a city’s rubbish is a big job. Every day trucks come into a city to collect it. Most rubbish is made up of things we can’t eat or use. If we kept these things we would soon have a mountain of rubbish.

In some cities the rubbish is collected and taken outside of the city to a dump(垃圾站). Often the city dump is placed where the ground is low or there is a big hole. The kitchen rubbish is broken into small pieces and sent into the sewage system. The sewage system takes away the used water from toilets, bathtubs(澡盆) and other places.

To keep mice and flies away, some earth is used to cover the newly dumped rubbish. Later, grass may be planted on the rubbish-filled land. Finally, a house or a school may be built there, and then you’d never know that this had once been an old rubbish dump.

In other cities the rubbish is burnt in special places. The fire burns everything but the metal. Sometimes the metal can be used again in factories where things are made of metal. The food parts of rubbish are put in special piles where they slowly change into something called humus(腐殖土), which looks like black earth. It is rich with kinds of things that feed plants and help make them grow.

1.You can most probably read the passage in _______.

A. a history book       B. a TV guide      

C. a science book       D. a telephone book

2.The underlined word “sewage” in the passage means_______.

A. 排污             B. 染色         C. 洗涤             D. 吸尘

3.According to the passage, the food parts of rubbish can be used again_______.

A. to feed animals     

B. to feed plants  

C. to build a house   

D. to make machines

4.How should we take care of a used metal box according to the passage?

A. By burning it off.                      

B. By putting it in water.

C. By throwing it away.                

D. By reusing and recycling it.

 

It’s important to learn about protecting our environment. Here is a 5R rule for us:
1.  Reduce
If you want to reduce waste, you should use things wisely. Millions of trees are being cut down to make paper. If everyone uses a little paper carelessly and throw it out, soon we would not have any trees left. Other things are also being wasted, and people don’t know what to do with the waste in big cities. So it is necessary to reduce the waste
2.  Reuse
You should always think of reusing the usable things before throwing them out. Give your clothes you do not use or the ones which are too small to the poor. With a family, you may pass on such clothes to younger brothers or sisters.
3.  Recycle
Bottles, cans and paper can easily be recycled. By doing so, we save lots of time and money. For example, coke cans are sent to a factory, where they are smashed flat（压平）and melted (融化) and the melted things are made for new coke cans.
4.  Recover
When you buy a box of apples, there may be a few rotten（腐烂的）apples. You have two choices: one is to throw the whole apple away, or you could cut off the rotten parts and eat the good parts. In this way, you are recovering the eatable parts of food.
5.  Repair
If one of the legs of your table is broken, you can repair it instead of throwing it away. If you want to change for better ones, It is better for you to sell the old things or give them to other people who can use them after doing some repair. It is true that North America is a “throw-away” society（社会）. But the time has come to change our way of life so that we can protect our environment. Every one of us should try our best.
【小题1】_______ can be recycled.

A．Only hard things

B．Many things

C．Few soft things

D．All things

【小题2】The “recover” rule mainly requires us _______.

A．to throw waste things away	B．to cover waste things with earth
C．to get back the useful parts	D．to throw the whole things away

【小题3】We can infer（推断） that the writer of this passage may live in _______.

A．China

B．Japan

C．Australia

D．America

【小题4】Which of the following is true?

A．We will have no resources（资源） of nature unless we can do with the waste.

B．Recycling is the best way to save resources.

C．If we waste less, we can save more resources of nature.

D．More things are wasted in developed countries than in developing ones.

It’s important to learn about protecting our environment. Here is a 5R rule for us:
1.  Reduce
If you want to reduce waste, you should use things wisely. Millions of trees are being cut down to make paper. If everyone uses a little paper carelessly and throw it out, soon we would not have any trees left. Other things are also being wasted, and people don’t know what to do with the waste in big cities. So it is necessary to reduce the waste
2.  Reuse
You should always think of reusing the usable things before throwing them out. Give your clothes you do not use or the ones which are too small to the poor. With a family, you may pass on such clothes to younger brothers or sisters.
3.  Recycle
Bottles, cans and paper can easily be recycled. By doing so, we save lots of time and money. For example, coke cans are sent to a factory, where they are smashed flat（压平）and melted (融化) and the melted things are made for new coke cans.
4.  Recover
When you buy a box of apples, there may be a few rotten（腐烂的）apples. You have two choices: one is to throw the whole apple away, or you could cut off the rotten parts and eat the good parts. In this way, you are recovering the eatable parts of food.
5.  Repair
If one of the legs of your table is broken, you can repair it instead of throwing it away. If you want to change for better ones, It is better for you to sell the old things or give them to other people who can use them after doing some repair. It is true that North America is a “throw-away” society（社会）. But the time has come to change our way of life so that we can protect our environment. Every one of us should try our best.
【小题1】_______ can be recycled.

A．Only hard things

B．Many things

C．Few soft things

D．All things

【小题2】The “recover” rule mainly requires us _______.

A．to throw waste things away	B．to cover waste things with earth
C．to get back the useful parts	D．to throw the whole things away

【小题3】We can infer（推断） that the writer of this passage may live in _______.

A．China

B．Japan

C．Australia

D．America

【小题4】Which of the following is true?

A．We will have no resources（资源） of nature unless we can do with the waste.

B．Recycling is the best way to save resources.

C．If we waste less, we can save more resources of nature.

D．More things are wasted in developed countries than in developing ones.