Прочитайте текст There are different shapes. They are triangles squares rectangles and circles. Tria...: ответ на тест 782139 - Английский язык

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Look at the picture. These are different shapes. They are triangles, squares, rectangles and circles.
Triangles have three sides and three angles. Squares and rectangles have four sides. Squares have four equal sides, but rectangles have two equal sides. Circles do not have angles or sides.

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There are different shapes. They are triangles, squares, rectangles and circles.
Triangles have three sides and three angles. Squares and rectangles have four sides. Squares have four equal sides, but rectangles have two equal sides. Circles do not have angles and sides.
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How many equal sides do squares have?

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There are some basic types of fuel for motor vehicles. There is diesel fuel, there is petrol and there is fuel mixture.
A lot of buses have diesel engines but not only a few cars have such engines. There are also a few cars with two-stroke engines but most cars have four-stroke engines.
Most lorries have diesel engines. There are not many lorries with four-stroke petrol engines but there are lorries with two stroke engines.
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What engines do a lot of buses have?

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Many of the robots today perform different jobs. Robots are used in various branches of industry. A modern robot is a complex structure with a number of components. Each of them performs a certain task. Scientists have developed new models of robots. Such robots are used for various purposes.
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What have scientists developed?

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What is a crystal? A crystal is a geometrical solid made by a natural process. Many substances absorb water from solutions when they crystallize; that is, they unite chemically with a definite proportion of water. The water with which any substance unites during the process of crystallization is called the water of crystallization.
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What is a crystal?

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Aluminium, water, oxygen, and carbon dioxide are substances. Some substances are elements and some substances are compounds. Elements have only one type of atom whereas compounds have more than one type.
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How many types of atom do elements have?