Расположите пропущенные предложения в таком порядке чтобы получился связный текст. 1_______. This sy...: ответ на тест 1046602 - Английский язык

Расположите пропущенные предложения в таком порядке, чтобы получился связный текст.
1_______. This system was first developed in India in the 3rd century BC. 2_______.
The important innovation in the Arabic system was the use of positional notation, in which individual number symbols assume different values according to their position in the written numeral. 3_______. The symbol 0 makes it possible to differentiate between 11, 101, and 1,001 without the use of additional symbols, and all numbers can be expressed in terms of ten symbols, the numerals from 1 to 9 plus 0. 4_______.

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The Arabic system of numerical notation is used in most parts of the world today. This system was first developed in India in the 3rd century BC. At that time the numerals 1, 4, and 6 were written in the same form as today.
The important innovation in the Arabic system was the use of positional notation, in which individual number symbols assume different values according to their position in the written numeral. Positional notation is made possible by the use of a symbol for zero. The symbol 0 makes it possible to differentiate between 11, 101, and 1,001 without the use of additional symbols, and all numbers can be expressed in terms of ten symbols, the numerals from 1 to 9 plus 0. Positional notation also greatly simplifies all forms of written numerical calculation.

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Soldering is recommended for making connections on electrical circuits, but it should never be used where strong joints are required. For permanent joints between two dissimilar materials like nylon and metal, it is advisable to use adhesives. For temporary jobs, like fitting a maintenance cover, screw-fastening should always be used. Riveting is recommended for permanent sheet-metal joints such as outer casing fitting. Although welding should always be used for steel support girders, brazing can be used for medium-sized joints where strength is required; for example the joint between the base and body of a hydraulic jack.
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Screw-fastening should always be used for …

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Cast iron should be used for components which must be strong in compression. It is recommended for machine beds and frames. Wrought iron is recommended for components where tensile strength is required; for example, crane hooks and railway couplings. Mild steel should be used for components which must be strong in shear; therefore it is recommended for rivets and bolts. Medium carbon steel is recommended for components where impact strength is required; for example, axles and hammer heads.
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Wrought iron is recommended for …

Заполните пропуски в инструкции следующими словами:
1) Never run along the 1_______.
2) Safety boots must always be worn on 2_______.
3) Always use safety 3_______ in the workshop.
4) You must worn 4_______ at heights.

Заполните пропуски в инструкции следующими словами:
1) Never smoke in the 1_______.
2) No 2_______ at work.
3) You must 3_______ on the door before you came in.
4) Don’t enter this warehouse without putting on this overalls and safety 4_______.