8. Выпишите из 3-го абзаца предложения с инфинитивом. Определите функцию инфинитива и переведите предложения.

9. Дайте письменные ответы на следующие вопросы.

1. Why is mathematics useful in everyday life?

2. When did mathematics begin?

3. What are primitives?

4. What does pure mathematics deal with?

5. Where is applied mathematics used?

Вариант 2

1. Перепишите предложения, определите в каждом из них видо-временную форму и залог сказуемого. Переведите предложения.

1. Computers have been built which interpret their addresses and codes differently.

2. All the mathematical sciences are closely connected.

3. Geometry was constructed on the basis of a number of axioms and theorems.

4. Computers are being used more and more extensively in the world today, for the simple reason that they are far more efficient than human beings.

5. Scientists were seeking for laws describing nature.

2. Перепишите предложения и переведите их, обращая внимание на разные значения слов it, that, one.

1. It must be appreciated that many concepts in science are embodied in mathematical statements.

2. One can predict quite accurately whether a small change in one quantity will cause a violent reaction.

3. It is the stored program that separates the electronic digital computer from all other types of computing devices.

4. We could offer you a number of difficult problems, but this one seems to be most attractive.

5. In many investigations it is easier to find relations between the changes of variables than between the variables themselves.

6. We have received some new machines similar to those installed in your laboratory.

3. Перепишите предложения и переведите их, обращая внимание на разные значения глаголов to be, to have, to do.

1. The computer does only additions in a sequence determined by a logical control.

2. In older practice the arithmetic operations associated with statistical analysis had to be done by hand or with the aid of a calculation.

3. Mathematicians have developed formulas and rules for performing integration.

4. Teachers are arguing not about the ultimate value of the pocket calculator but about when it should be introduced.

5. It is sad to think of the mathematicians of recent years who devoted years to the arduous calculation of logarithms and trigonometric functions.

6. Computers have much better memories and can store huge amounts of information than a human mathematician.

7. He is to define all possible types of triangles.

4. Перепишите предложения и переведите их, обращая внимание на бессоюзное подчинение.

1. This is the principle the electronic computer is based upon.

2. The main tendencies of computer development scientists are working at are to increase the scale of integration and to improve reliability.

3. In some cases the symbols are abbreviations of words, but often they have no such relations to the things they stand for.

4. He was one of the greatest scientists the world had ever known.

5. The number of words we are to memorize increases rapidly.