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It is never too hot or too cold m Great Britain. This is because of the sea, which keeps the island warm in winter and makes the air cool in summer. The winds are also very often in Great Britain. They blow from the south-west two days out of every three. But the warm winds from the Atlantic are very wet. They also bring a lot of rain to the island. The east or north-east winds are cold and dry. The weather very often changes in Great Britain. You can never have the same kind of weather for a long time. In spring, for example, sunshine and showers follow each other so often during the day that an umbrella or a rain-coat are really necessary in Great Britain. The weather in spring is generally mild, but sometimes the days are really cold. The summer is not so cold as on the continent, and warm days in autumn are beautiful. In winter they have all sorts of weather. Sometimes it rains and sometimes it snows. Still, in Great Britain it is never so cold in winter as in our country and they do not get so much snow there as we get here in Russia. The rivers and lakes are seldom covered with ice. As the ice, if there is any, is not thick enough, they seldom go skating on the rivers in Great Britain. But the worst thing about the climate in Great Britain is the thick fog they so often have in autumn and in winter. In London it often mixes with the smoke of plants and factories and they call it the «smog». It is sometimes so thick that cars may run into one another.

Хз мб вот это  for the first time the idea of building the underground railway in moscow was discussed before the revolution. but the construction of the first section (from sokolniki to central park) was initiated only in 1932, and lasted 3 years. it was called the record period of time by the world press. the russian engineers carefully studied the existing underground systems abroad before working out their own project, which represents a significant improvement on the london system. the engineering difficulties were great mainly because much of the soil was composed of running sand*. fortunately most of the running sand lay close to the surface and it was found possible to use out-and-cover method** of construction under many of the streets. but in the center of the city where the line is 100 ft or more deep, the construction of tunnels was necessary. the moscow underground consists of a circle line, which runs round the city center, several radial lines crossing the city and connecting with each other and the lines running to the countryside. some constructional work is still going on. now the length of the underground lines reaches about 300 km. at present the moscow metro handles more than 5 million passengers each day. during peak hours trains run at a speed of 90 km per hour with the intervals of about 80 seconds. one train takes up to 1,500 passengers. for greater safety of travel all trains are inspected every 6-9 hours of running. being in operation for about 13 hours daily each metro train covers the distance equal to that from moscow to st. petersburg. the trains servicing the underground are supplied with low voltage direct current. the current is obtained from the third rail by special devices that are mounted beneath the motor coaches. rolling stock is completely replaced approximately once every four years. the moscow metro can compete with the underground railways in any of the european capitals in level of automation. at present experiments are being conducted with an “automatic driver”, i.e. with computer-controlled trains. the computer devices will help to relieve the nervous strain on the drivers and make it possible to increase the cruising speed*** of trains even more. these automatic devices have already been tested over the circle route by way of experiment.