1. Since an atom is electrically neutral it has equal number

   of positive and negative charges*

   2* The gaseous state of matter has boen the subject of investi­gation since the seventeenth century*

   3* Tfe have studied the history of man’s use of atomic energy since the beginning of the century up to the present time. 4* Since there is a certain amount of fission in the blanket,

   It must be cooled by sodium* 5* Since this gas does not become radioactive there is no need

   for another heat-exchanger* £• Since Rutherford’s time such devices have divided into two

   classes*

   This reaction proceeds two times as slowly as that one.

2. Both reactions should take place at a time.

3. All the data were processed by the computer in no time.

4. Special arrangements are required to remove radioactive fission by products from time to time.

hard – трудный(-но), твердый / hardly – едва ли

ready – готовый / readily – легко

near– близкий, вблизи, рядом / nearly-почти

current – ток, поток, текущий, современный

currently – в настоящее время

1. Before World War II the French Government bought 40 gallons of heavy water. This was nearly all the heavy water in the world.

2. Current designs provide more than 1,000 megawatts of electric power per reactor.

3. The US currently get more than 15 percent of its energy in the form of imported oil.

4. We can control the flow of current in the circuit.

5. This fact seems hard to understand.

6. This type of accident can hardly occur.

7. The emergency system is always ready to operate.

8. This element occurs in its readily fissionable form.

a number – число, номер

a number of – ряд, несколько

the number of – число, количество

1. This control can be achieved by a number of techniques.

2. The conductivity depends on the number of ions present.

3. Nuclear power plants have a number of advantages over conventional power plants.

4. The development of nuclear power industry poses a number of problems.

a result – результат

as а result – в результате, как результат

to result in – приводить к

to result from – проистекать из

1. The results were published in the document.

2. As a result it is possible for the control systems to control the reactivity of a reactor in normal operation.

3. A sudden loss of coolant pressure may result from a rupture of the pressure vessel.

4. A sequence of such events may result in the automatic shutdown of the reactor.

turn – поворот, оборот; поворачивать(-ся)

in turn – по очереди, в свою очередь

to turn into – превращаться в

to turn out – оказываться

to turn on/off – включить/выключить

1. Light-water reactors are in turn classified as either pressurized-water reactors or boiling-water reactors.

2. The result turned out to be in good agreement with the values expected.

3. Coal should be turned into synthetic gas and oil.

4. The emergency core-cooling system turned itself on automatically two minutes after the accident, but the operators turned it off.

too – тоже, также; слишком, чрезмерно

1. Oil and gas production is becoming too expensive.

2. The resources of uranium are limited, too.

3. This problem is too serious, we must discuss it now.

last – последний, прошлый (прилагательное)

to last – длиться, продолжаться, хватать

at last – наконец, в конце концов

1. This experiment was carried out last week.

2. The world’s uranium resources will last very long.

3. One cycle of this plant’s operation lasts 3 hours.

4. And at last the radioactive waste is buried.