timofee1999

16.01.2021 19:20

Английский язык

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1. Дополните письменно предложения словами, подходящими по смыслу. 1. At first, a man invented simple ___________ to facilitate their
work.
2. So that, complex _________ turned into _________________.
3. Nowadays _______________ are everywhere around us.
4. All they make the necessary ____________ for a person.
5. The examples of the machines are ________________________.
6. Machines consist of three main parts: ___________________,
______________, and _____________ them.
7. If there is the absence of one of the parts, the machine will not
__________.
8. The ___________________ is a system whose component parts
are ___________.
9. To sum up, ______________ is a device for converting one kind
of motion into another.
10. ______________ are devices that perform useful work for a
person and turn one kind of __________ into another.

2. Подберите к каждому слову из правой колонки определение
из левой колонки.

1. Physical value (величина) which characterizes a) wheel
change of a certain object as a result of action of
other bodies on it.

2. Simple mechanism designed to convert motion b) friction
into rotational motion. (трение) force

3. The energy of the compressed spring. c) mechanical

4. Force due to the motion of a body on the surface d) manmade
of another.

5. Systems that man creates to facilitate his work. e) work

3. Напишите своими словами о чём говорится в тексте.

IT IS INTERESTING TO KNOW…
The first invented mechanism was the lever (рычаг). Most likely,
the first lever was a stick with which people pulled from the ground
eatable roots or wrested stones