2. Put in the missing words, using the words from the table above:

1. The use of light isotopes in a … reactor has been under experimental study since the 1950s.

2. Many metals are malleable and … .

3. If left unchecked, … will eventually weaken the pipeline.

4. Nuclear power makes a … contribution to the environment by curbing carbon dioxide emissions.

5. To … each gram of water requires heating 2, 500 grams of regolith up to red heat.

6. The references and diagrams were … to the document.

7. Specialist image analysis equipment for light and electron microscope images also require interfacing with … computers.

8. Whether the technology ever will gain … use is uncertain.

9. … is a piece of equipment for changing electricity from one voltage to another.

10. Everyone is being encouraged to … energy.

3. Match the words with the opposite meaning.

1. to join	a. stiff
2. safe	b. tremendous
3. soft	c. ancient
4. inside	d. to divide
5. small	e. outside
6. present	f. decorative
7. functional	g. dangerous

4. Divide the words into four columns according to their part of speech (verb, noun, adjective, adverb).

workpiece, electric, powerful, transformer, melt, dangerous, continuously, join, safety, quickly, soften, fusion, essential, dry, investment, currently, property, investigate.

5. Study the table, then do exercises that follow.

1. The following suffixes are used to form nouns from verbs:

-tion, -sion, -ance, -ure, -er/-or, -ment

2. The following prefixes are used to give the opposite meaning to the word:

dis-, in-, im-, un-

1. Make up all possible nouns of the following verbs:

to resist –

to differ –

to restrict –

to press –

to depend –

to absorb –

to produce –

to transform –

to fuse –

to move –

to perform –

to operate –

to locate –

to require –

2. Give the opposite to:

decrease –

dependent –

different –

charge –

approve –

connect –

possible –

enable –

ability –

necessary –

complete –

available –

adequate –

exhaustible –

6. Choose the appropriate English equivalents.

1. Мы должны были рассмотреть … - 1. We must consider …; 2. We had to consider; 3. We have to consider …; 4. We were to consider … .

2. Они должны использовать … -1. They are to employ … ; 2. They can employ …; 3. They have to employ … ; 4. They must employ … .

3. Мы должны будем поместить … -1. We must place …; 2. We shall have to place … ; 3. We shall be able to place …; 4. We shall be allowed to place … .

4. Вам придётся усовершенствовать … -1. You will have to improve …; 2. You will improve … ; 3. You will be able to improve …; 4. You will be allowed to improve … .