Rewrite the sentences in the passive 1. you can buy snacks at the park's canteen 2. they have already put out the fire 3. Dana is planning a Women's Day celebration
ТУТ НЕ НУЖНО ПО СМЫСЛУ РАЗБИРАТЬ ЭТО те кто РЕАЛЬНО разбирается
1.Experts estimate that in the 21st century we will go by rock et from New York to Tokyo in 30 minutes. We will be able to reach any point on the globe from any other point through tunnels deep in the earth. Trips through metropolitan areas will be made on quiet, swift buses travelling on separate express lines of city streets. “Flying crane” helicopters soon may help solve the complicated problem of getting passengers from the centre to the airport and back again. 2.Most of the advances in air transportation will materialize within the next few years. The largest airplane ever designed for commercial service, capable of seating nearly 500 passengers, is already being built. Supersonic transport prototypes now in development are forerunners of a new generation of 1,800 miles per hour passenger jet-liners. The “ideal” short-haul air transport is a vertical or short take-off and landing aircraft that can fly 30 to 45 passengers right into the heart of a city or its suburbs trips up to 260 miles. In the 1920s the top speed of an airplane was not more than 200 kilometres per hour, the load per square metre of the wing area was about 50 kilograms. The main construction material was wood. In our day, the speed of aircraft, even passenger planes, is approaching 3,000 kilometres per hour, loads may be as high as 600 kilograms per square metre of wing. The turbine that drives such an aircraft is a miracle of materials strength. 4.Of tremendous importance is the creation of new materials. Chemists engaged in polymer research have produced the world’s best synthetic materials. Metallurgists studying a new class of aluminium alloys have produced a very durable alloy . Plastics are employed in a number of aircraft engine applications and have successfully displaced metals in jet turbine impellers where the high fatigue resistance of the material is of great importance. At present a great deal of research and development is being carried out to produce special grades of plastics for space vehicles. For space travel, resistance to cosmic radiation is an important consideration. 5.Some ideas of rapid air transportation are on the drawing boards, some may never get off. Some are already under way and operational. Changes are taking place, and there are more to come.
Дмитрий Менделеев хороший русский учёный 19 века. Он признан великим химиком, который создал классификацию элементов. Дмитрий Менделеев родился в 1834 году в Тобольске. В школе Дмитрий преуспел в математике, физике и географии , но плохо знал язык. В 1855 он окончил педагогический институт в Петербурге с золотой медалью за достижения. В 1856 получил степень по химии.Дмитрий Менделеев вложил огромный вклад в мир науки.Он первый создал зависимость элементов по их атомному весу. Он предсказал , что проблемы в таблице элементов были бы заполнены , но они не известны. Дмитрий Менделеев был польщён тем , что его считали членом академии наук во многих странах.101 элемент не был назван в его честь.
