单选题

LOW-COST AIR TRAVEL


    For most organisations, it is very important to reduce travel costs. That is     1    more and more companies are booking flights with low-cost airlines; in fact, this     2    of the market has grown dramatically in recent years.
    Low-cost airlines offer tickets at well below the prices     3    by ordinary airlines, but     4    still meet the same safety standards and regulations. Operating costs are reduced in a number of     5    . Firstly, customers book directly with the airline, either on the internet or     6    the telephone. Low-cost airlines do not,     7    , have to pay commission to travel agents. Further savings are     8    , as these airlines do not issue tickets-they simply give customers a reference number. Passengers do not normally receive postal confirmation of their booking     9    they ask for it, which some do in order to carry proof     10    booking. Finally, low-cost airlines do not usually offer     11    in-flight services.
        12    low-cost airlines may soon become normal practice in the business world.

1. 
【正确答案】 C
【答案解析】