如右图所示，电灯A标有“10V，10W”，电灯B标有“8V，20W”，滑动变阻器

选词填空

takes ，cost ，sound ，work ，dream ，flew，possible  ,flight，earlier，own

CONCORDE, the world’s fastest passenger plane, will soon be over 33 years old. It first 小题1:______  on 2 March 1969 in France. Concorde was developed by both France and Britain. From 1956 these two countries had a 小题2:______ of a supersonic passenger plane. In 1962 they started to 小题3:______ together on the project. The plane 小题4:______ over 1.5 billion pounds to develop. It is the most tested plane in the history. It was given over 5000 hours of testing. Concorde flies at twice the speed of 小题5:______. This means that it 小题6:______ only 3 hours 25 minutes to fly between London and New York, compare with 7—8 hours in other passenger jets. Because of the five-hour time difference between the USA and Britain, it is 小题7:______ to travel west on Concorde and arrive in New York before you leave London! You can catch the 10:30a.m. 小题8:______ from London, Heathrow and start work in New York an hour 小题9:______! Concorde is much used by business people and film stars. Each Concorde is built at a cost of 55 million pounds. Twenty have been built so far. Air France and British Airway 小题10:______ the most. They each have seven planes.