* Read the passage, then answer the questions.
In Britain, natural gas is the most popular fuel for heating homes, and for cooking. It is piped all over the country from the gas fields below the North Sea. Natural gas is used chiefly as a direct source of energy, although it is also used in the chemical industry. At the moment the supply is plentiful, but it will be running short by the end of the century, and will run out during the 21 st century unless new supplies are found. We could do without natural gas, as coal gas can be used as a substitute, and there should be enough coal to last for several centuries. However, it is a form of energy which is not only cheap, but also highly efficient.
1. What is natural gas used for?
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2. Where does it come from?
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3. What is natural gas used chiefly as?
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4. Is the supply plentiful now?
………………………………………………………………………………………………………………………………
5. What will happen if we can’t find new supplies?
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6. When will it run out?
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7. What can be used as a substitute for natural gas?
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8. How long should there be enough coal to last?
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9. Is natural gas expensive?
………………………………………………………………………………………………………………………………
10. Is it efficient?
………………………………………………………………………………………………………………………………

In Britain, natural gas is the most popular fuel for heating homes, and for cooking. It is piped all over the country from the gas fields below the North sea. Natural gas is used chiefly as a direct source of energy, although it is also used in the chemical industry. At the moment, the supply is plentiful, but it will be running short by the end of the century, and it will run out during the 21^st century unless new supplies are found. We could do without natural gas, as coal gas can be used as a substitute, and there should be enough coal to last for several centuries. However, it is a form of energy which is not only cheap, but also highly efficient.

1. What is natural gas used for?

à__________________________________________________________________

2. Where does it come from?

à__________________________________________________________________

3. What is gas used chiefly as? When will it run out?

à__________________________________________________________________

4. What can be used as a substitute for natural gas?

à__________________________________________________________________

5. Is natural gas expensive or cheap?

à__________________________________________________________________

Read the following passage and mark the letter A , B , C or D to indicate the correct word or phrase that best fits each of the numbered blanks .
One of the most important discoveries of the nineteenth century was a method of using natural gas for Cooking and heating . Large (23)_______natural gas found in the United States , usually several thousand feet below : the surface of (24) _______Earth . For many years after natural gas first discovered , it was thought to have no value . Finally , ( 25 ) ________,people began to understand its uses and to find ways of storing it and of moving it from place to place .
Today ( 26 )_______ gas is stored in large tanks and used for lighting Cooking , and heating . In many ways , natural gas is one of our finest fuels . It is cheap and can be used for ( 27 )_______ without making the room hot . It can be moved easily from one place to another through long pipelines , some of which are hundreds of miles in length .
23 . A . areas B . amounts C . piles D . packs
24 . A . one B . a C . anh D . the
25 . A . however B . therefore C . so D . but
26 . A . nature B . natural C . naturally D . naturalize
27 . A . Cook B . Cooker C cooking D , Cooked

Read the passage and complete the sentences

Energy is fundament to human beings. Many poor people in developing countries do not have modern sources of energy like electricity or natural gas, with which their life can be improved.

   People who live in mountainous areas have to gather wood for fuel. This takes a lot of time. For many people living in rural areas, biogas is the largest energy resource available. The main use of biogas is for cooking and heating, but it can also provide energy for public transport. As biogas is smoke-free, it helps the problem of indoor air pollution. Moreover, it is made from plant waste and animal manure. They cost almost nothing.

   The tendency to use renewable energy sources in developing sources in developing countries is on the increase as non-renewable ones are running out. In the future, the wind and the sun will be uses as the most important environmentally friendly energy sources.

Question: Biogas is mainly used for ________________________.

Read the passage and complete the sentences

Energy is fundament to human beings. Many poor people in developing countries do not have modern sources of energy like electricity or natural gas, with which their life can be improved.

   People who live in mountainous areas have to gather wood for fuel. This takes a lot of time. For many people living in rural areas, biogas is the largest energy resource available. The main use of biogas is for cooking and heating, but it can also provide energy for public transport. As biogas is smoke-free, it helps the problem of indoor air pollution. Moreover, it is made from plant waste and animal manure. They cost almost nothing.

   The tendency to use renewable energy sources in developing sources in developing countries is on the increase as non-renewable ones are running out. In the future, the wind and the sun will be uses as the most important environmentally friendly energy sources.

Question: In the future, the ________________________ will be used as the main environmentally friendly energy sources.

Read the following passage and decide if it is T or F.

Energy is fundament to human beings. Many poor people in developing countries do not have modern sources of energy like electricity or natural gas, with which their life can be improved.

   People who live in mountainous areas have to gather wood for fuel. This takes a lot of time. For many people living in rural areas, biogas is the largest energy resource available. The main use of biogas is for cooking and heating, but it can also provide energy for public transport. As biogas is smoke-free, it helps the problem of indoor air pollution. Moreover, it is made from plant waste and animal manure. They cost almost nothing.

   The tendency to use renewable energy sources in developing sources in developing countries is on the increase as non-renewable ones are running out. In the future, the wind and the sun will be uses as the most important environmentally friendly energy sources.

___ Non-renewable sources are being used up.

Read the passage and complete the sentences

Energy is fundament to human beings. Many poor people in developing countries do not have modern sources of energy like electricity or natural gas, with which their life can be improved.

   People who live in mountainous areas have to gather wood for fuel. This takes a lot of time. For many people living in rural areas, biogas is the largest energy resource available. The main use of biogas is for cooking and heating, but it can also provide energy for public transport. As biogas is smoke-free, it helps the problem of indoor air pollution. Moreover, it is made from plant waste and animal manure. They cost almost nothing.

   The tendency to use renewable energy sources in developing sources in developing countries is on the increase as non-renewable ones are running out. In the future, the wind and the sun will be uses as the most important environmentally friendly energy sources.

Question: Biogas helps solve the problem of indoor ________________________.

Read the passage and complete the sentences

Energy is fundament to human beings. Many poor people in developing countries do not have modern sources of energy like electricity or natural gas, with which their life can be improved.

   People who live in mountainous areas have to gather wood for fuel. This takes a lot of time. For many people living in rural areas, biogas is the largest energy resource available. The main use of biogas is for cooking and heating, but it can also provide energy for public transport. As biogas is smoke-free, it helps the problem of indoor air pollution. Moreover, it is made from plant waste and animal manure. They cost almost nothing.

   The tendency to use renewable energy sources in developing sources in developing countries is on the increase as non-renewable ones are running out. In the future, the wind and the sun will be uses as the most important environmentally friendly energy sources.

Question: People in ________________________ areas have to gather wood to use as fuel.

Read the following passage and decide if it is T or F.

Energy is fundament to human beings. Many poor people in developing countries do not have modern sources of energy like electricity or natural gas, with which their life can be improved.

   People who live in mountainous areas have to gather wood for fuel. This takes a lot of time. For many people living in rural areas, biogas is the largest energy resource available. The main use of biogas is for cooking and heating, but it can also provide energy for public transport. As biogas is smoke-free, it helps the problem of indoor air pollution. Moreover, it is made from plant waste and animal manure. They cost almost nothing.

   The tendency to use renewable energy sources in developing sources in developing countries is on the increase as non-renewable ones are running out. In the future, the wind and the sun will be uses as the most important environmentally friendly energy sources.

___ Biogas is a new source of energy available for poor people.