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Наталья в категроии Английский язык, вопрос открыт 13.10.2018 в 06:48

Having been ignored for years because they were considered unreliable and unsafe, airships are now coming back into fashion. In the past, the gas used to keep the airship aloft was dangerous, as it could be ____ alight very easily; but modern airships are more safer. In fact the airship is now one of the safest type of transport. Combing the features of an aeroplane with those of a hot-air balloon, the airship is becoming an increasingly common type of transport in our cities. More and more people are discovering just ____ useful it can be. As ____ as carrying cameras for major sports events ____ as the Cup Final, airships are being used to ____ an eye on day-to-day life. As they make virtually ____ noise, they can be monitor special events without creating an unnecessary disturbance. The airship is also popular in the advertising business. Its size and slow speed mean that it can be seen by ____ numbers of people, making it an ideal advertising medium. At night, it can be lit up from inside, which creates an ____ more visible advertisement. The airship is most widely used, however, in traffic control, as it can not ____ remain in the air while travelling very slowly, but also move from one traffic jam to ____ at speeds of up to 60 mph.