文档介绍：2014年职称英语综合类A级阅读理解例题精讲(5)
Air Transportation
Airplanes are used to carry passengers, cargo and mail. Air panies operate scheduled airlines and non-scheduled services over local, regional, national, and international routes. The aircraft operated by panies range from small single-engine planes to large multiengine jet transports.
The first air passenger services began in 1910, when dirigibles began operation between several German cities. The first scheduled airplane service to carry passengers began in the in 1914. Several experimental airmail flights took place in India, Europe, and the United States before World War I, but air transport service did not e a true business until after the war.
During World War Two, intercontinental air transport became firmly established. After the war the new long-distance transports with advanced facilities were increasingly able to avoid storms and strong wind and make flights more economical and consistent. A new generation of "jumbo-jet" transports began operations in 1970, and the supersonic transport entered passenger service in 1976.
练习:
1. Paragraph 2__________.
2. Paragraph 3__________.
3. Paragraph 4__________.
4. Paragraph 5__________.
A Necessity for developing adult education
B Early days of adult education
C Ways of receiving adult education