[填空题]

• A. in the development of air transportation
• B. the earliest passenger flights were successfully operated
• C. to make travel easy and pleasant for the passengers
• D. to provide different services
  E the shortage of qualified pilotsF. travelling by air was very cheap

Air transport companies use different planes ______.

[填空题]

• A. in the development of air transportation
• B. the earliest passenger flights were successfully operated
• C. to make travel easy and pleasant for the passengers
• D. to provide different services
  E the shortage of qualified pilotsF. travelling by air was very cheap

The United States was the country where ______.

[填空题]

• A．in the development of air transportation
• B．the earliest passenger flights were successfully operated
• C．to make travel easy and pleasant for the passengers
• D．to provide different services
• E．the shortage of qualified pilots
• F．travelling by air was very cheap

Air transport companies use different planes ______.

[单项选择]A. The air pollution is caused by the development of industry.
B. The city was poor because there wasn’t much industry then.
C. The woman’s exaggerating the seriousness of the pollution.
D. He might move to another city very soon.

[简答题]air carriers

[单项选择]Air France Tel: (010) 6588 1388 (020) 6360 6688 Day From To Flight Departure Arrival 1-7 Beijing Paris AF129 09:40 14:15 1-7 Paris Beijing AF128 15:55 07:40 2,4,7 Shanghai Paris AF111 10:55 17:05 1,3,6 Paris Shanghai AF112 15:55 09:05 Lufthansa Tel:(010) 6465 4488 (021) 6248 1100 Day From To Flight Departure Arrival 1-7 Beijing Frankfurt LH721 10:30 14:25 1-7 Frankfurt Beijing LH720
A. AF129.
B. AF128.
C. AF111.
D. AF112.

[简答题] Air Pollution When people think about air pollution, they usually think about smog, acid rain, CFC’’s, and other forms of outdoor air pollution. But did you know that air pollution also can exist inside homes and other buildings It can, and every year, the health of many people is affected by chemical substances present in the air within buildings. A great deal of research on pollution is being conducted at laboratories and universities. The goals of the research are to find solutions and to educate the public about the problem. Two places where this type of work is being done are LBNL and the University of California, Berkeley. Let’’s take a closer look at the various types of air pollution, the effects that they have on people, and what is being (or not being) done to correct the problem. What Is Air Pollution Air is the ocean we breathe. Air supplies us with oxygen which is essential for our bodies to live. Air supplies us with o