1. Put the letter of the correct expression in the blank before each number.

1. Proponents of nuclear power	a)	on the other hand
say that it is clean…if is efficient.	b)	moreover
	c)	nevertheless
2. Opponents of nuclear power	a)	however
say that it is not safe…proponents say that it is safe.	b)	furthermore
	c)	moreover
3. Oil is expensive… it can be dirty.	a)	moreover
	b)	nevertheless
	c)	however
4. Surface coal mines damage the	a)	furthermore
land… mines do not.	b)	moreover
	c)	on the other hand
5. Many people favour nuclear	a)	however
energy… many other people fear it.	b)	moreover
	c)	furthermore

II. Say whether the following statements are true or false:

1. Oil is considered an alternate source of energy.

2. Coal, the sun, and the wind are sources of energy.

3. Solar energy is cheap and efficient.

4. The sun's heat can be collected by panels.

5. Photo cells can be used in places with dark, cloudy weather.

6. "Acid" rain results from the use of solar power.

7. The subject of atomic energy is highly controversial.

8. Fossil fuels come from the atmosphere.

9. Proponents of nuclear power say it is dangerous.

10. Coolants lower the temperature of river water.

11. An important problem of nuclear reactors is where to store waste products.

III. Compare and contrast:

Nuclear		dangerous;	moreover,		safe.
Solar	power is	safe;	furthermore,	it is	dirty.
Geothermal		dirty;	on the other		clean.
Fossil		clean;	hand,		efficient.
		efficient;	nevertheless,		inefficient
		inefficient;	however,		dangerous.

Answer the following questions to the text:

1. What sources of energy provide electricity?

2. Why are additional supplies of energy needed?

3. What is an important goal of today's scientists and tech­nologists?

4. Where can solar energy be used?

5. What are the problems in using solar energy?

6. Why are more and more countries turning to coal as a source of energy?

7. How do they get geothermal energy?

8. What is another way to use hot water for heating?

9. Why do many people oppose atomic energy?

10. What is a strong argument of the proponents of nuclear en­ergy?

3. Read the following; fill in the blanks with modal verbs:

1. How many people can the room seat?

2. The room…………………seat 30 people.

1. Can your brother read English books without using a dic­tionary?

2. Yes, he………………… He knows English well.

1. May we use the glass tubes for the tests with these liquids?

2. No, you……………………………. .

1. May we cross the street here?

2. Oh, you do this. It is very dangerous,