Прочитайте текст и определите какой из заголовков соответствует тексту The story of the discovery of...: ответ на тест 800521 - Английский язык

Прочитайте текст и определите, какой из заголовков соответствует тексту
The story of the discovery of electricity is connected with the name of Thales, the Greek philosopher. The story goes that one day Thales rubbed a piece of amber against his sleeve and found to his great surprise that it attracted small bits of dried leaves. After further experimenting he concluded that this attractive force was a property that amber alone possessed. He called this characteristic “electricity” because the Greek word for amber was electron.

Прочитайте текст и определите, какой из заголовков соответствует тексту
The story of the discovery of electricity is connected with the name of Thales, the Greek philosopher. The story goes that one day Thales rubbed a piece of amber against his sleeve and found to his great surprise that it attracted small bits of dried leaves. After further experimenting he concluded that this attractive force was a property that amber alone possessed. He called this characteristic “electricity” because the Greek word for amber was electron.

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There are 1_______ types of chisel for metalwork and for woodwork. Woodwork chisels have a smaller angle at the point of the tool although this is suitable for soft materials such as 2_______, a tool point with a small 3_______ is too weak for hard materials. 4_______ metal, a stronger point is necessary, so the angle is greater at the point of a metalwork chisel.

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Here is the control panel for a lift. Each button has a different 1_______. The one at the top on the left opens the lift 2_______; the one at the bottom on the left closes them. The one in the 3_______ on the left stops the lift at the different 4_______.

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To measure dimensions such as the length, height, depth or diameter of a component, micrometers are used. There are different types of micrometer for different 1_______.
To measure the external diameter of a small component such as a small shaft, a micrometer caliper is used; to measure internal 2_______, a micrometer cylinder is used. Depth micrometers are used to measure the 3_______ of a component. The measurements are shown on different 4_______ of scale depending on the type of micrometer.

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The raw materials for plastics are coal and 1_______, and many plastic materials today are produced from oil. Plastics can be divided into two main 2_______. The first group, called thermoplastics, includes well-known plastics such as PVC, nylon and polythene. These can be treated (heated, softened and cooled) several times, and can be formed into combs, pipes and bags, in addition to many other similar 3_______.
Thermosetting 4_______ include melamine, polyurethane and phenolic resin, and can be made into tableware, foams and plugs respectively. However, this group differs from thermoplastics because they can be treated only once and harden when they are heated.