Прочитайте текст и заполните пропуски A–F частями предложений, обозначенными цифрами 1–7. Одна из частей в списке 1–7 — лишняя. Занесите цифры, обозначающие соответствующие части предложений, в таблицу.
When you ride an escalator, you might not realize that it's probably one of the biggest and most expensive machines A__________________ . Despite their size and cost, though, they're actually fairly simple machines. Escalators are basically just long conveyor belts. They have rotating chains that pull a set of stairs in a constant cycle, B__________________. With this basic circular motion, they are able to move many people a short distance quickly. There were actually many people who thought of the idea over time, C__________________. In 1859 Nathan Ames patented the first “escalator” D________________. However, he never made a working model of his concept. In 1892, Jesse W. Reno patented the “Endless Conveyor or Elevator.” He also produced the first working escalator and installed it along the Old Iron Pier at Coney Island in New York City in 1896. Soon afterward, George A. Wheeler patented his own ideas for an escalator. He never built working models of any of his ideas, but Charles Seeberger bought his patents. Some of Wheeler's ideas were used in Seeberger's prototype escalator E__________________. Seeberger also came up with the name “escalator” in 1900. He put the word together from Latin root words scala, e and tor, which he roughly translated as “means of traversing from.” F__________________, Seeberger did not simply name the escalator to be similar to the word elevator.
1. although it sounds like elevator
2. which you use regularly
3. that was built by the Otis Elevator Company in 1899
4. which is the world's longest outdoor escalator system with a total length of 2,600 feet
5. but many of them never acted upon it
6. creating a moving staircase
7. when he came up with the idea for “revolving stairs”