One of the most urgent environment problems in the world today is the shortage of clean water. Having clean drinking water is a basic human right. But acid rain, industrial pollution and garbage have made many sources of water undrinkable. Lakes and even entire seas have become large pools of poison. Lake Baikal in Russia is one of largest lake in the world. It contains a rich variety of animals and plants, including 1,300 rare species that do not exist anywhere else in the world. But they are being destroyed by the massive volumes of industrial pollutants which pour into the lake everyday. Even where law existed, the government did not have the power to enforce them. Most industries simply ignore the regulations. The Mediterranean Sea occupies 1% of the world's water surface. But it is the dumping ground for 50% of all marine pollution. Almost sixteen countries regularly throw industrial wastes a few miles off shore. Water is free to everyone. A few years ago people thought that the supply of clean water in the world was limitless. Today, many water supplies have been ruined by pollution and sewage. Clean water is now scarce, and we are at last beginning to respect this precious source. We should do something now.

Many sources of water are not drinkable because of………. 

Teaching English as a foreign language can be a great way to travel the world and earn money at the same time. However, some graduates actually like idea of (i) _______  a career in teaching English, and there are numerous courses at various levels, from the basic certificate to the Diploma or even the master’s. To find the right course, a good place to start is TEFL.com – an internet site with lots of relevant information and helpful (ii)_______  including a full list of places in the UK offering courses. The site also offers assistance to qualified graduates (iii)_______  finding work. When deciding a full list of places, what to do is to look at what your needs are. If you want a career in leaching English, then definitely find one designed for that (iv) _______  , such as an MA or diploma; but if you want to travel around the world, then do a shorter course that will supply you with teaching skills. Some countries will employ people without a teaching qualification as long as the teacher is a (v) _______ speaker of English. However, most countries now expect a qualification. It is advisable to make sure that the course that you want to do is recognized and that it includes a period of teaching practice. This is important in preparing people to be English language teachers.

(ii)_____

Read the passage and choose one correct answer for each question.

Many people still believe that natural resources will never be used up. Actually, the world's energy resources are limited. Nobody knows exactly how much fuel is left. However, we also should use them economically and try to find out alternative sources of power. According to Professor Marvin Burnham of the New England Institute of Technology, we have to start conserving coal, oil and gas before it is too late; and nuclear power is the only alternative.

However, many people don't approve of using nuclear power because it is very dangerous. What would happen if there were a serious nuclear accident? Radioactivity causes cancer and may badly affect the future generations. The most effective thing is that we should use natural resources as economically as possible.

Radioactivity from nuclear power ________

 Read the passage carefully, then choose the correct answers.

The search for alternative sources of energy has led in various directions. Many communities are burning garbage and other biological waste products to produce electricity- Converting waste products to gases or oil is also an efficient way to dispose of wastes. Experimental work is being done to derive synthetic fuels from coal, oil shale, and coal tars. But to date, that process has proven expensive. Other experiments are underway to harness power with giant windmills. Geothermal power is also being tested. Some experts expect utility companies to revive hydroelectric power derived from streams and rivers. Fifty years ago hydroelectric power provided one third of the electricity used in the United States, but to day it supplies only 4 percent. The oceans are another potential source of energy. Scientists are studying ways to convert the energy of ocean currents, tides, and waves to electricity. Experiments are also underway to make use of temperature differences in ocean water to produce energy.

What is the best title of the passage?

Teaching English as a foreign language can be a great way to travel the world and earn money at the same time. However, some graduates actually like idea of (i) _______  a career in teaching English, and there are numerous courses at various levels, from the basic certificate to the Diploma or even the master’s. To find the right course, a good place to start is TEFL.com – an internet site with lots of relevant information and helpful (ii)_______  including a full list of places in the UK offering courses. The site also offers assistance to qualified graduates (iii)_______  finding work. When deciding a full list of places, what to do is to look at what your needs are. If you want a career in leaching English, then definitely find one designed for that (iv) _______  , such as an MA or diploma; but if you want to travel around the world, then do a shorter course that will supply you with teaching skills. Some countries will employ people without a teaching qualification as long as the teacher is a (v) _______ speaker of English. However, most countries now expect a qualification. It is advisable to make sure that the course that you want to do is recognized and that it includes a period of teaching practice. This is important in preparing people to be English language teachers.

(iv)_____

Read the passage carefully and choose the correct answer

Many countries are now growing palm oil trees to gain energy. The rush to energy derived from plants will lead to deforestation, push small farmers off the land and lead to serious food shortages and increased poverty unless it is carefully managed. Rich countries want to see crops grown for fuel to help stabilize the price of oil, open up new markets. But the United Nations urges governments to beware their impacts. The report, which predicts winners and losers, will be studied carefully bio-fuel industry which wants to provide 25% of the world’s energy within 20 years. 17 countries have committed themselves to erowing the crops on a large scale. It has been said that 10% of all fuel must come from bio-fuels by 2020. The crops have the potential to stabilize the price of oil, but forests are being cut to grow plantations of palm oil trees. These crops will take the best land, which will increase global food prices. Growing bio-fuel crops can be harmful to farmers who do not own their own land, and to the poor who buy food. Using bio-fuels results in some reductions in emissions but we cannot fight climate change by large scale deforestation. Investments need to be planned carefully to avoid generating new environmental and social problems.

The word crops is used to refer to _____.

The search for alternative sources of energy has led in various directions. Many communities are burning garbage and other biological waste products to produce electricity- Converting waste products to gases or oil is also an efficient way to dispose of wastes. Experimental work is being done to derive synthetic fuels from coal, oil shale, and coal tars. But to date, that process has proven expensive. Other experiments are underway to harness power with giant windmills. Geothermal power is also being tested. Some experts expect utility companies to revive hydroelectric power derived from streams and rivers. Fifty years ago hydroelectric power provided one third of the electricity used in the United States, but to day it supplies only 4 percent. The oceans are another potential source of energy. Scientists are studying ways to convert the energy of ocean currents, tides, and waves to electricity. Experiments are also underway to make use of temperature differences in ocean water to produce energy.

What can be inferred from the last paragraph?

The search for alternative sources of energy has led in various directions. Many communities are burning garbage and other biological waste products to produce electricity- Converting waste products to gases or oil is also an efficient way to dispose of wastes. Experimental work is being done to derive synthetic fuels from coal, oil shale, and coal tars. But to date, that process has proven expensive. Other experiments are underway to harness power with giant windmills. Geothermal power is also being tested. Some experts expect utility companies to revive hydroelectric power derived from streams and rivers. Fifty years ago hydroelectric power provided one third of the electricity used in the United States, but to day it supplies only 4 percent. The oceans are another potential source of energy. Scientists are studying ways to convert the energy of ocean currents, tides, and waves to electricity. Experiments are also underway to make use of temperature differences in ocean water to produce energy.

According to the author, the impracticability of using coal, oil shale and coal tars as sources of energy is due to ___________ .

Read the passage carefully and choose the correct answer

Many countries are now growing palm oil trees to gain energy. The rush to energy derived from plants will lead to deforestation, push small farmers off the land and lead to serious food shortages and increased poverty unless it is carefully managed. Rich countries want to see crops grown for fuel to help stabilize the price of oil, open up new markets. But the United Nations urges governments to beware their impacts. The report, which predicts winners and losers, will be studied carefully bio-fuel industry which wants to provide 25% of the world’s energy within 20 years. 17 countries have committed themselves to erowing the crops on a large scale. It has been said that 10% of all fuel must come from bio-fuels by 2020. The crops have the potential to stabilize the price of oil, but forests are being cut to grow plantations of palm oil trees. These crops will take the best land, which will increase global food prices. Growing bio-fuel crops can be harmful to farmers who do not own their own land, and to the poor who buy food. Using bio-fuels results in some reductions in emissions but we cannot fight climate change by large scale deforestation. Investments need to be planned carefully to avoid generating new environmental and social problems.

The passage is about ___.

Teaching English as a foreign language can be a great way to travel the world and earn money at the same time. However, some graduates actually like idea of (i) _______  a career in teaching English, and there are numerous courses at various levels, from the basic certificate to the Diploma or even the master’s. To find the right course, a good place to start is TEFL.com – an internet site with lots of relevant information and helpful (ii)_______  including a full list of places in the UK offering courses. The site also offers assistance to qualified graduates (iii)_______  finding work. When deciding a full list of places, what to do is to look at what your needs are. If you want a career in leaching English, then definitely find one designed for that (iv) _______  , such as an MA or diploma; but if you want to travel around the world, then do a shorter course that will supply you with teaching skills. Some countries will employ people without a teaching qualification as long as the teacher is a (v) _______ speaker of English. However, most countries now expect a qualification. It is advisable to make sure that the course that you want to do is recognized and that it includes a period of teaching practice. This is important in preparing people to be English language teachers.

(v)_____

Read the passage carefully, then choose the correct answers.

The search for alternative sources of energy has led in various directions. Many communities are burning garbage and other biological waste products to produce electricity- Converting waste products to gases or oil is also an efficient way to dispose of wastes. Experimental work is being done to derive synthetic fuels from coal, oil shale, and coal tars. But to date, that process has proven expensive. Other experiments are underway to harness power with giant windmills. Geothermal power is also being tested. Some experts expect utility companies to revive hydroelectric power derived from streams and rivers. Fifty years ago hydroelectric power provided one third of the electricity used in the United States, but to day it supplies only 4 percent. The oceans are another potential source of energy. Scientists are studying ways to convert the energy of ocean currents, tides, and waves to electricity. Experiments are also underway to make use of temperature differences in ocean water to produce energy.

 In the second paragraph, the phrase “synthetic fuels” could best be replaced by which of the following?

Read the passage and choose one correct answer for each question.

Many people still believe that natural resources will never be used up. Actually, the world's energy resources are limited. Nobody knows exactly how much fuel is left. However, we also should use them economically and try to find out alternative sources of power. According to Professor Marvin Burnham of the New England Institute of Technology, we have to start conserving coal, oil and gas before it is too late; and nuclear power is the only alternative.

However, many people don't approve of using nuclear power because it is very dangerous. What would happen if there were a serious nuclear accident? Radioactivity causes cancer and may badly affect the future generations. The most effective thing is that we should use natural resources as economically as possible.

How much fuel is left?

Aluminium foil is used to wrap food in the kitchen. It is very thin flexible metal sheet, sold in a roll, and since it is put in the oven. The invention of the foil in France in 1903 may not have seemed hugely significant at the time but it began a packaging revolution that was to change our whole (i) _______ of life. Until the early 20th century, everything bought from shops was wrapped with paper and string. (ii) _______ the growing technological expertise in the world, packaging remained quite basiC. Aluminium foil was not widely used until 1914, when people began using it as a secure top for milk bottles. Some forty years later, however, the packaging revolution really (iii) _______  when companies making the cans used for soft drinks stopped using tin, a metal which was becoming too expensive, and switched to aluminium. (iv) _______ production of aerosol cans soon followed. Al the turn of the 20th century, there was little or no packaging to throw away. But with the arrival of the new materials, what we now refer to as the “throw – away society” was bom. Disposable razors, for example, were (v) _______ to be used and then thrown aw’ay. The idea was appealing to manufacturers because it meant that the customer would always be coming back for more.

(v)_____

Read the passage and choose one correct answer for each question.

Many people still believe that natural resources will never be used up. Actually, the world's energy resources are limited. Nobody knows exactly how much fuel is left. However, we also should use them economically and try to find out alternative sources of power. According to Professor Marvin Burnham of the New England Institute of Technology, we have to start conserving coal, oil and gas before it is too late; and nuclear power is the only alternative.

However, many people don't approve of using nuclear power because it is very dangerous. What would happen if there were a serious nuclear accident? Radioactivity causes cancer and may badly affect the future generations. The most effective thing is that we should use natural resources as economically as possible.

We should use coal, oil and gas ________

Teaching English as a foreign language can be a great way to travel the world and earn money at the same time. However, some graduates actually like idea of (i) _______  a career in teaching English, and there are numerous courses at various levels, from the basic certificate to the Diploma or even the master’s. To find the right course, a good place to start is TEFL.com – an internet site with lots of relevant information and helpful (ii)_______  including a full list of places in the UK offering courses. The site also offers assistance to qualified graduates (iii)_______  finding work. When deciding a full list of places, what to do is to look at what your needs are. If you want a career in leaching English, then definitely find one designed for that (iv) _______  , such as an MA or diploma; but if you want to travel around the world, then do a shorter course that will supply you with teaching skills. Some countries will employ people without a teaching qualification as long as the teacher is a (v) _______ speaker of English. However, most countries now expect a qualification. It is advisable to make sure that the course that you want to do is recognized and that it includes a period of teaching practice. This is important in preparing people to be English language teachers.

(i)_____

Aluminium foil is used to wrap food in the kitchen. It is very thin flexible metal sheet, sold in a roll, and since it is put in the oven. The invention of the foil in France in 1903 may not have seemed hugely significant at the time but it began a packaging revolution that was to change our whole (i) _______ of life. Until the early 20th century, everything bought from shops was wrapped with paper and string. (ii) _______ the growing technological expertise in the world, packaging remained quite basiC. Aluminium foil was not widely used until 1914, when people began using it as a secure top for milk bottles. Some forty years later, however, the packaging revolution really (iii) _______  when companies making the cans used for soft drinks stopped using tin, a metal which was becoming too expensive, and switched to aluminium. (iv) _______ production of aerosol cans soon followed. Al the turn of the 20th century, there was little or no packaging to throw away. But with the arrival of the new materials, what we now refer to as the “throw – away society” was bom. Disposable razors, for example, were (v) _______ to be used and then thrown aw’ay. The idea was appealing to manufacturers because it meant that the customer would always be coming back for more.

(ii)_____

Read the passage and choose the best answer:

Hello students. Today I'd like to tell you some information about types and sources of energy. Energy is classified into two main groups: renewable and non-renewable.

The energy generated from natural sources such as the sun, wind, rain, and tides is called renewable energy. They are plentiful and can be generated again and again. They also have low carbon emissions so they are considered green and environment-friendly. Moreover, using renewable energy can reduce your electricity bills. Unfortunately, solar energy can be only used during the daytime but not during night or the rainy season. Geothermal energy also can bring toxic chemicals beneath the earth's surface to the top and can create environmental changes.
Non-renewable energy is the energy taken from other sources that are available on earth. They are limited and will run out in the future. They can't be re-generated in a short time. Fossil fuels - natural gas, oil and coal - are examples of them. They are cheap and easy to use. However, when burnt, they release toxic gases in the air so they cause serious environmental changes such as global warming. And the important thing is that non-renewable sources will expire someday.

Non-renewable energy will run out in 150 years.

Teaching English as a foreign language can be a great way to travel the world and earn money at the same time. However, some graduates actually like idea of (i) _______  a career in teaching English, and there are numerous courses at various levels, from the basic certificate to the Diploma or even the master’s. To find the right course, a good place to start is TEFL.com – an internet site with lots of relevant information and helpful (ii)_______  including a full list of places in the UK offering courses. The site also offers assistance to qualified graduates (iii)_______  finding work. When deciding a full list of places, what to do is to look at what your needs are. If you want a career in leaching English, then definitely find one designed for that (iv) _______  , such as an MA or diploma; but if you want to travel around the world, then do a shorter course that will supply you with teaching skills. Some countries will employ people without a teaching qualification as long as the teacher is a (v) _______ speaker of English. However, most countries now expect a qualification. It is advisable to make sure that the course that you want to do is recognized and that it includes a period of teaching practice. This is important in preparing people to be English language teachers.

(iii)_____

Read the passage carefully and choose the correct answer

Many countries are now growing palm oil trees to gain energy. The rush to energy derived from plants will lead to deforestation, push small farmers off the land and lead to serious food shortages and increased poverty unless it is carefully managed. Rich countries want to see crops grown for fuel to help stabilize the price of oil, open up new markets. But the United Nations urges governments to beware their impacts. The report, which predicts winners and losers, will be studied carefully bio-fuel industry which wants to provide 25% of the world’s energy within 20 years. 17 countries have committed themselves to erowing the crops on a large scale. It has been said that 10% of all fuel must come from bio-fuels by 2020. The crops have the potential to stabilize the price of oil, but forests are being cut to grow plantations of palm oil trees. These crops will take the best land, which will increase global food prices. Growing bio-fuel crops can be harmful to farmers who do not own their own land, and to the poor who buy food. Using bio-fuels results in some reductions in emissions but we cannot fight climate change by large scale deforestation. Investments need to be planned carefully to avoid generating new environmental and social problems.

Growing palm trees _____.

Read the passage and choose the best answer:

Hello students. Today I'd like to tell you some information about types and sources of energy. Energy is classified into two main groups: renewable and non-renewable.

The energy generated from natural sources such as the sun, wind, rain, and tides is called renewable energy. They are plentiful and can be generated again and again. They also have low carbon emissions so they are considered green and environment-friendly. Moreover, using renewable energy can reduce your electricity bills. Unfortunately, solar energy can be only used during the daytime but not during night or the rainy season. Geothermal energy also can bring toxic chemicals beneath the earth's surface to the top and can create environmental changes.
Non-renewable energy is the energy taken from other sources that are available on earth. They are limited and will run out in the future. They can't be re-generated in a short time. Fossil fuels - natural gas, oil and coal - are examples of them. They are cheap and easy to use. However, when burnt, they release toxic gases in the air so they cause serious environmental changes such as global warming. And the important thing is that non-renewable sources will expire someday.

The sun is one of the sources of energy which is friendly with the environment.

Read the passage and choose the best answer:

Hello students. Today I'd like to tell you some information about types and sources of energy. Energy is classified into two main groups: renewable and non-renewable.

The energy generated from natural sources such as the sun, wind, rain, and tides is called renewable energy. They are plentiful and can be generated again and again. They also have low carbon emissions so they are considered green and environment-friendly. Moreover, using renewable energy can reduce your electricity bills. Unfortunately, solar energy can be only used during the daytime but not during night or the rainy season. Geothermal energy also can bring toxic chemicals beneath the earth's surface to the top and can create environmental changes.
Non-renewable energy is the energy taken from other sources that are available on earth. They are limited and will run out in the future. They can't be re-generated in a short time. Fossil fuels - natural gas, oil and coal - are examples of them. They are cheap and easy to use. However, when burnt, they release toxic gases in the air so they cause serious environmental changes such as global warming. And the important thing is that non-renewable sources will expire someday.

Non-renewable energy can be generated in a short time.