Вопрос № 284563 - Английский язык

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A lot of people began to see how electro-magnets could be used to send messages. One of the most famous people of all in communication is Samuel Morse. He invented the Morse code. This code is still used in signaling all over the world. His idea was simple. He thought of using time, sending current along a wire for a long time or a short time. Combining different sets of these “impulses”, just using the long or short, he made a code for the whole alphabet, and the numbers from 0 to 9.

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The Morse code simplified sending messages. It was also very fast. With practice, the Morse code can be read at 30 words a minute or more. It became the most widely used code, because it was the easiest to understand and the fastest to transmit. The telegraph meant that at last people could send messages a long way at great speed. Soon people wanted to send messages even farther.

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Radio was invented in Russia. The world's first receiver was constructed in 1895 by the great Russian scientist Alexander Popov. There were no transmitters then, therefore his receiver could only pick up signals produced by lightning discharges during a thunderstorm. A. Popov demonstrated a device called a "storm indicator" at a meeting of the Russian Physico-Chemical Society in St. Petersburg on May 7, 1895. This day is marked now as Radio Day. Soon Alexander Popov found a way of transmitting Morse code signals. In 1897 he sent the world's first wireless telegram over a distance of 600 m and four years later the range of transmission was increased to 150 km. Nowadays radio communication has no limits.

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Cereals are those members of the grass family which produce edible seed. Wheat, barley, rye, oats, corn and rice are known to be the most common and the most valuable cereals. The cereals grown in the temperate zone are known as small grains. They are wheat, barley, oats and rye. They may be spring or winter annuals. Corn and rice are warm season crops. They are to be seeded in spring or early summer and mature in the fall.

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Animal husbandry, a branch of agricultural production, includes the breeding of farm animals and their use. Farm animals are highly important sources of food for man. They are known to produce highly nutritious products such as milk, meat and eggs. In addition, the skin of animals, down and feather of poultry and wool of sheep are used as raw materials to produce clothing and for many other purposes.

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Agriculture is the most important branch of economy in Denmark. It is highly developed. Big farms are predominant in Denmark.
The country has very favourable climate, soils and topography for farming. These factors stimulate crop growing and animal breeding.
Most farm operations are highly mechanized, from preparation of the soil to harvesting crops and feeding animals. The use of fertilizers and other chemicals increase crop yields and animal products.