剑桥英语 判断题 题型解析.pptx

Lecture 1 T/F/NG;;20? The FAA was created as a result of the introduction of the jet engine.? 21? Air Traffic Control started after the Grand Canyon crash in 1956.?　　 22? Beacons and flashing lights are still used by ATC today.?　　 23? Some improvements were made in radio communication during World War II.? 24. Class F airspace is airspace which is below 365m and not near airports. 25. All aircraft in class E airspace must use IFR. 26. A pilot entering Class C airspace is flying over and average-sized city.?;20? The FAA was created as a result of the introduction of the jet engine. A段： An accident that occurred in the skies over the Grand Canyon in 1956 resulted in the establishment of the Federal Aviation Administration (FAA) to regulate and oversee the operation of aircraft in the skies over the United States, which were becoming quite congested. The resulting structure of air traffic control has greatly increased the safety of flight in the United States, and similar air traffic control procedures are also in place over much of the rest of the world.? FALSE ;21 Air Traffic Control started after the Grand Canyon crash in 1956. B段：Rudimentary air traffic control (ATC) existed well before the Grand Canyon disaster .As early as the 1920s, the earliest air traffic controllers manually guided aircraft in the vicinity of the airports, using lights and flags, while beacons and flashing lights were placed along cross-country routes to establish the earliest airways. However, this purely visual system was useless in bad weather, and, by the 1930s, radio communication was coming into use for ATC. The first region to have something approximating todays ATC was New York City, with other major metropolitan areas following soon after.? FALSE ;22? Beacons and flashing lights are still used by ATC today. B段：… As early as the 1920s, the earliest air traffic controllers manually guided aircraft in the vicinity of the airports, using lights and flags, while beacons and flashing l