Вопрос № 74006 - Английский язык

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The story of the 1_______ 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 2_______ small bits of dried leaves. After further experimenting he concluded that this attractive 3_______ was a property that amber alone possessed. He called this characteristic “electricity” because the Greek word for amber was 4_______.

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The name electricity came from the Greek word for amber and 1_______ by Elizabeth I’s physician William Gilbert who was among those 2_______ noticed that amber had the power to attract light objects after being rubbed. In the 3_______ century such great names as Michael Faraday, Humphry Davy, Alessandro Volta and Andre Marie Ampere all did 4_______ work on electricity.

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Bikes, planes and cars have wheels and tyres. 1_______ have wheels; they do not have tyres. Bikes have two wheels and two tyres. 2_______ have wings. Bikes, locomotives and cars do not have wings. Planes and 3_______ have engines. 4_______ do not have engines.

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1______________. It is more than 20 kilometres long. 2___________. They started on opposite sites and met in the middle under the sea. They used specially-designed tunnel boring machines (TBMs) to dig the tunnels through the rock under the seabed. 3____________. The machines used to dig the main tunnels were about 8.5 metres in diameter and 250 metres long. Work started in 1987 and the teams met under the seabed in 1991.4___________.

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Floors belong to one of the most important functional components of a building. Floors influence the acoustics of a room: it depends on whether a hard or soft flooring is used. Floors also react in various ways with light. Some flooring materials are known to produce mirrorlike reflection. As to dark flooring materials, they, on the contrary, absorb light and this absorption makes a room darker. As to light materials, they reflect light and help create a lighter and brighter room.

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1________ since long hair can be caught in moving machinery.
2________ as loose clothing can be caught in moving machinery.
3________ when lightweight shoes are worn.
Sleeves should always be rolled up 4_______.