每日一练：职称英语考试卫生类每日一练(2019/4/29)
【单选题】
Air Transportation
Airplanes are used to carry passengers， cargo and mail. Air transport companies operate scheduled airlinesand non-scheduled services over local， regional， national， and international routes. Theaircraft operated by these companies range from small single-engine planes tolarge multiengine jet transports.
The first air passenger services began in 1910， when dirigibles began operation between several German cities. Thefirst scheduled airplane service to carry passengers began in the U.S in 1914.Several experimental airmail flights took place in India， Europe， and the United States before WorldWar I， but air transport service did not become a truebusiness until after the war.
During World War Two， intercontinental air transport became firmly established. After the war the newlong-distance transports with advanced facilities were increasingly able toavoid storms and strong wind and make flights more economical and consistent. Anew generation of “jumbo-jet” transports began operations in 1970， and the supersonictransport entered passenger service in 1976.
During the 1970s the number of domesticpassengers on U.S airlines increased about 78%， andduring the 1980s the figure was up about 58%. In 1990 there were 41.8 millioninternational passengers， the figure was a 75% increaseover 1980. The total cargo flown by U.S airlines almost doubled during the1980s， from 5.7 billion to 10.6 billion ton-miles in1990.
Major airports provide a wide range offacilities for the convenience of millions of travelers. These range from suchbasic services as ticket-sales counters and restaurants to luxury hotels， shopping centers and play are as for children. Internationalairports must also have customs areas and currency-exchange counters and son.
EXERCISE：
1. Paragraph 2 _____.
2. Paragraph 3 _____.
3. Paragraph 4 _____.
4. Paragraph 5 _____.
A Airport services
B Training of pilots
C Beginning period
D Rapid growth in the U.S.
E Development
F Competition
5. Air transport companies use different plans____.
6. The United States was the country where ____.
7. The forty years from the 1930s to the 1970swas an important period ___.
8. Nowadays airports provide all kinds ofservices ____
A in the development of air transportation
B the earliest passenger flights weresuccessfully operated
C to make travel easy and pleasant for thepassengers
D to provide different services
E the shortage of qualified pilots
F traveling by air was very cheap
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