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  : , , . A formal analysis of the system was attempted. . Partial matches are allowed. .   An example is shown in Fig.2. 2.  
  The problem was addressed to by many researches. .
  , Tens of thousands of workers came by cars from all over the country to take part in these demonstrations. , .
There + be It is (who, what, where) There was a note on the table. . It is the Russian scientist Popov who invented the Radio. .

 

, . .

I'll come late today. .

II :

A thing well said will be wise in all languages.

.

1. , :

1. The property depends on the substances being used.

2. The instrument used is very reliable.

3. Talent concealed brings no reputation.

4. The variational method provides a highly precise calculation.

5. Before solving the parameter identification problem, one would address the problem of identifiability of parameters.

6. The fundamental discoveries in this new science were made nearly twenty years ago.

2. , :

1. The strange thing happened In February 1987.

2. A real thing happened In February 1987.

3. For 2200 years all the mankind believed Euclid to have discovered an absolute truth.

4. The new British government decided to pursue peace negotiations in Paris in early 1782 with the American side represented by Benjamin Franklin, John Adams and John Jay.

5. Russian Trade was primarily with the Middle East until the 18th century.

6. We asked him to help us, the work to be done in a week.

 

3. , .

1. There is a new point of view on this problem.

2. A new computer was bought for the lab.

3. It is the computers which provide the key to the fully automatic factories of the future.

4. There are some grounds for supporting this grounds.

5. We had to involve experts to solve this problem.

6. A new exhibition has been organized in this building.

7. Social issues will certainly be taken care of by the new management of the company.

8. There are some items on the agenda.

9. It was until 1995 that he published his book.

10. It was Pr. N, who was selected chairman of the meeting.

11. His answer was appreciated by everybody.

 

4. . ?

Some twenty five years ago a group of science men formed in America. They were eminent scientists in many different fields, but they were united by a common interest in particular kind of problem. In a nutshell, this was the problem of control. The time was ripe for some new thinking on this topic. Particular manifestations of the control problem were arising at this time because of the Second World War. In fact, several rapidly developing lines of thought, originating in quite different spheres of activity, were coming together.

People were busy with the design of electronic control machinery of various kinds. Mathematicians were trying to help by discussing the behavior of information inside these electrical systems in terms of mathematics. Biological scientists had also shown interest in problems of control, and in the way information behaves in the body of animal. They were beginning to make attempts to discuss such questions formally with the help of mathematics. Logicians, engineers, psychiatrists all these and others were finding roads which led to the same basic topic: the notion of control itself. Gradually scientists began to realize, though the terrible barrier constituted by their different professional language, that they were talking about the same thing.

( .., . 185 -186)

5. . .

Natural resources are the building blocks on which modern society depends. , .
A natural resource is any form of material organic or inorganic obtainable from the earths physical environment to satisfy human needs. , .
Before using any such material however, technology, economic implications and possible environmental effects of obtaining and using it have to be considered.   , : , , .
If natural resources are not explored wisely, they will soon be depleted, leading to serious degradation of the earths physical environment. , , .
Understanding the environment and its impact on life will help you make positive influences to its conservation and use.   Future generations may also get to enjoy the flora and fauna if we preserve the environment. .     , .

 

 

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