Прочитайте текст и определите какой из заголовков соответствует тексту Yesterday from 4 till 6 o’clo...: ответ на тест 782650 - Английский язык

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Yesterday from 4 till 6 o’clock Ann and Alice were working in the laboratory. They were studying different electrical devices and instruments. One of them, a multimeter, was on their demonstration table all the time.
The multimeter is used for measuring three types of electrical units, namely: voltage, resistance and current. This device has several scales, a needle, a function selector, two leads, a crocodile clip and a probe.

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Yesterday from 4 till 6 o’clock Ann and Alice were working in the laboratory. They were studying different electrical devices and instruments. One of them, a multimeter, was on their demonstration table all the time.
The multimeter is used for measuring three types of electrical units, namely: voltage, resistance and current. This device has several scales, a needle, a function selector, two leads, a crocodile clip and a probe.

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In algebra, letters are used to express the general properties of numbers. Representing one number by the letter a and another by the letter b, we can write the equality.
                                   a x b=b x a
or, more shortly, ab=ba.
If no other sign is indicated, the multiplication sign is understood between any two letters written side by side.
To represent numbers letters of the Latin alphabet are generally used.

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In 1858, a French engineer, Thome` de Gamond arrived in England with a plan for a twenty-one mile tunnel across the English Channel. He said that it would be possible to build a platform in the centre of the Channel. The platform will serve as a port and a railway station. The tunnel would be well-ventilated if tall chimneys were built above sea-level. In 1860, a better plan was put forward by an English-man, William Low. He suggested that a double railway tunnel should be built. This would solve the problem of ventilation, for if train entered this tunnel, it would draw in fresh air behind it. 42 years later, a tunnel was actually begun. If, as the time, the British had no feared invasion, it would have been completed.

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Sputnic 1 was an unmanned satellite. The first person to travel in space was Y. Gagarin on board the spacecraft Vostok 1. This success inspired the U.S. to set up its space close-up programme. An American space probe sent back the photographs of Mars. In 1969, the American astronauts set foot on the Moon. Their steps were seen by TV viewers all over the world. 3 years earlier the Russian probe was powerful enough to send back the first pictures from the Moon’s surface. The invention that enabled space exploration to go ahead was the computer placing a spacecraft into the orbit and guiding its progress involves complete calculations which can be made only by computers very rapidly.

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Traffic means everything and everybody is using the roads. Trams and buses taking people to school or to work are traffic. Cars and motorcycles are traffic. People riding bicycles on the roads are traffic. You are a part of the traffic when you walk along the pavement or across the road. Today more people live in cities. As a result, there is a great deal of traffic and many of the roads are too narrow. That is why there are a great many accidents. In cities all over the world thousands of people die or are hurt in traffic accidents. Some people say we must improve our roads. We do it by making them wider and straighter. Accidents often happen on narrow roads or on corners. Drivers cannot see around corners. They cannot see traffic coming towards them. When roads are improved, corners are changed. That is a very good idea to improve the roads.